AMSTRAD TVR1
Fault: Intermittent operation of mechanical functions
Fix: Mode switch faulty - clean or replace.

Fault: No forward wind, rewind ok.
Fix: Tape end phototransistor faulty.

AMSTRAD TVR3

Fault: No chroma
Fix: HIC101 faulty.

Fault: No luminance / poor luminance
Fix: HIC201 faulty.


AMSTRAD VCR4500

Fault: Loss of sound with tracking lines over picture occuring after a few
minutes due to tape moving down capstan.
Fix: Check / replace the large clutch drum - note position of mode control
switch before dismantling.

Fault: No functions or clock display. Pause and function LED's lit.
Fix: Resistor R661 (4.7 ohm) open circuit.

Fault: No tuning.
Fix: Diode D517 (GZA43Y 43V Zener) Faulty.

Fault: Damage to bottom edge of Tape
Fix: Suspect faulty reel drive clutch, item 301

Fault: Not accepting cassette and function LED permanently lit
Fix : 12 Volt Regulator Q651 and Diode D655


AMSTRAD VCR4600

Fault: Appears dead - no clock display - deck functions ok
Fix: Check mains transformer and all rectfied DC outputs on PSU

Fault: Goes into forward search when play selected
Fix: Check / replace IC302 (BA718)

Fault: Incorrect display segments lit
Fix: Suspect timer IC (14DN332)

Fault: No capstan servo lock after machine warmed up
Fix: Check / replace IC302

Fault: No chrominance
Fix: HIC101 faulty.

Fault: No clock display - will not accept cassette and +28V supply low.
Fix: Check timer IC (14DN332)

Fault: No luminance / poor chromanance
Fix: HIC101 faulty

Fault: No play or FF or stopping intermittently in record
Fix: Left hand sensor

Fault: No playback / record colour or intermittent
Fix: Chromamamce module HC1-201. Check for dry joints or replace part.

Fault: No servo operation
Fix: Check IC302 (BA718)

Fault: No video in E-E mode, sound ok and playback ok
Fix: Capacitor C817 (1000uF) faulty.

Fault: Speed reduced in playback and record modes.
Fix: IC302 (BA718). Check for low volts in pin 2 (normally about 4V)

Fault: Tape damage on bottom edge.
Fix: Suspect faulty reel drive clutch, item 301.

Fault: 2 thin lines across screen about 1 third and 2 thirds of the way
down the screen
Fix: Check 10uF capacitor on drum motor assembly.

Fault: Wow on playback sound - capstan speed varying.
Fix: Check IC302 (BA718)

Fault: Corrugated picture from tape with both own and and prerecorded tapes
Fix : Lower Drum / Motor assembly - note: certain replacement motors can
cause the head switching point to occur about 2 inches from the top
of the screen which cannot be adjusted. To solve this problem, remove
the magnet assembly off the old motor and fit it to the new motor.

AMSTRAD VCR4600 Mk 2

Fault: No video in E-E mode, sound ok and playback ok
Fix: Check capacitor C710 (1000uF)

AMSTRAD VCR4700

Fault: No chromanance
Fix: HIC101

Fault: No luminance / poor luminance
Fix: HIC201

Fault: No video in E-E mode, sound ok and playback ok
Fix: Check capacitor C710 (1000uF)

Fault: Shuts down about 20 seconds after selecting play or record
Fix: Check take up reel sensor

AMSTRAD VCR5200

Fault: Dead
Fix: Transistor Q651 open circuit, IC307 short circuit.

Fault: Ejects fully wound tape immediately
Fix: Check end sensor

AMSTRAD VCR6000

Fault: Appears dead - no clock display - deck functions ok
Fix: Suspect mains transformer and PSU DC outputs

Fault: Cassette symbol flashing
Fix: Check for grease on mode switch

Fault: Incorrect display segments lit
Fix: Suspect timer IC 14DN332

Fault: No clock display - will not accept cassette, +28V supply low
Fix: Check timer IC (14DN332)

Fault: Picture unstable on playback with intermittent colour. 50hz hum
on +5V supply
Fix: Check diodes, bridge rectifier and smoothing capacitors on PSU

Fault: As soon as the mechanics start, the machine powers down
Fix : Bridge rectifier

Fault: Random switching between LP and SP mode
Fix: Check IC402 (14DN363) on servo panel

Fault: Remote control not working but clock on handset still ok
Fix: Replace batteries

Fault: Shuts down or shuts down intermittently with cassette symbol flashing
Fix: Check cassette carriage


AMSTRAD VCR6100

Fault: Cassette symbol flashing
Fix: Check for grease on mode switch

Fault: Half loads then ejects and shuts down
Fix: Check half load switch underneath A/C head

Fault: Picture unstable on playback with intermittent colour and 50hz hum
on +5V supply
Fix: Check diodes, bridge rectifier and smoothing caps on PSU

Fault: Remote control not working but clock on handset ok
Fix: Replace batteries in handset

Fault: Shuts down or shuts down intermittently with cassette symbol flashing
Fix : Check cassette carriage

Fault: Chews up tapes
Fix : Half loading belts require replacing

Fault: Loop of tape left behind after fast forward has been used
Fix : Brake pad faulty / missing

Fault: Supply spool permanently braked during fast forward & rewind
Fix : Supply Brake arm should be released by take up arm - take up arm faulty

AMSTRAD VCR7000

Fault: Intermittent reel operation
Fix: Check reel motor, idler and RY2001 relay contacts

Fault: Poor fast forward, no take up
Fix: Check / replace reel idler and transistor Q15 (2SD1348) - Note: Uses
the same reel idler as Sharp 9300


AMSTRAD VCR9000

Fault: Front loading motor not rotating
Fix: Suspect dead spot on motor or dirty contacts on cassette in / lift
position detect switches

Fault: Damage to bottom edge of tape
Fix: Suspect faulty reel drive clutch

FISHER FVHP520

Fault: Laces up, starts to play, then unlaces - No pulses from P.G. coil
Fix : P.G. head

Fault: Nothing operational except fast forward
Fix : Loading belt

Fault: No play - No supply to loading motor
FIx : Transistor Q868 and control microprocessor

Fault: Machine laces up when powered on
Fix : Chip IC863

Fault: No video in E-E mode or from test signal - No +12V supply to modulator
and No UHF signal output
Fix : Transistors Q906 (2SD1111) and Q909 (2SB698)


FISHER FVHP530

Fault: Intermittent sound on E-E and record
Fix : Transistor Q404 on audio / video panel

Fault: Laces up and plays, but will not unlace when stop is selected
Fix : Transistor Q868 (2SD612) on syscon drive panel

Fault: No signal output
Fix : 3.15A Fuse and Transistor Q907 (2SB698)


FISHER FVHP615

Fault: Cassette ejected immediately and no rewind
Fix : Take up pulley sticking - replace / lubricate as necessary

Fault: Chewing up tapes
Fix : Check / replace reel idlers, also check take up spool

Fault: Slows down in rewind mode and stops
Fix : Loose or missing spring on side of cassette holder

Fault: Slows down on rewind and intermittently stops
Fix : Check supply reel table assembly and reel idler

Fault: Lines across picture (white steaks due to static electricity)
Fix : Tighten fixing screw on small PCB mount to rear of video head assembly

Fault: Loads and laces Ok but will not unlace
Fix : Chip IC504 (STK6962)

Fault: No record
Fix : Transistor Q513

Fault: Sound appears to be high pitched
Fix : Idler gear and leaf spring - Check / replace as necessary

Fault: No colour with vertical colour bars on picture
Fix : Capacitor C354 (.033uF)


FISHER FVHP710

Fault: Dead - Fuse F902 blown
Fix : Dry joints on Pins 10 and 12 of connector PV903

Fault: No display (channel / clock)
Fix : Capacitor Co17 (0.01uF)

FISHER FVHP715

Fault: Hum bar
Fix : Fuse blown that feeds the rectifier

FISHER FVHP725

Fault: Loads and laces up but will not unlace
Fix : Chip IC505 (STK6972)

FISHER FVHP906

Fault: No colour on record or playback
Fix : Chip IC204 (LC7342)

FISHER FVHP907

Fault: No colour on record or playback
Fix : Chip IC204 (LC7342)


GOLDSTAR GHV1232

Fault: Stops intermittently in play, record and fast forward / rewind.
Fix: Replace / clean reel sensor.

GOLDSTAR GHV1290

Fault: No playback - appearance of dirty video heads.
Fix: Replace IC302.

GOLDSTAR GSE1891I

Fault: Occasionally refuses / permanently refuses to eject cassettes
Fix : Broken gears
Right hand mount for the synchronisation bar and gears broken

GRUNDIG 2x4

Fault: Dead
Fix : Capacitor C401

Fault: Will not accept cassette and no functions - relay not holding when
power-on is selected
Fix : Capacitor C446 (470uF)

Fault: Drum servo speed not regulated - Speeds up and slows down
Fix : Capacitor C451 (1000uF)

Fault: Inverse picture on playback and E-E
Fix : Resistor R477 (27k)

Fault: No audio in E-E mode
Fix : Chip TBA12T on IF panel

Fault: Noisy picture
Fix : Transistor TR2302 (BF324)

Fault: No output from modulator
Fix : Resistor R25 (2.2k)

Fault: No video on playback - just diagonal lines
Fix : L723

GRUNDIG VS180

Fault: Dead
Fix : Diode D425 (BYV28/100)

Fault: No play / Intermittent no play - pause light flashes
Fix : Dirty contacts on S4 (brake solenoid switch)

Fault: Reel motor running continuously
Fix : Capacitors C301 (0.1uF) and C305 (0.1uF)

Fault: Hum bars on playback picture every 30 seconds
Fix : Control head

Fault: No signals
Fix : Chip IC535 (ZTN33A)

Fault: Spots in centre of picture
Fix : Grease build up on motor brushes

GRUNDIG VS200

Fault: Dead
Fix : T421 (MJE15029)

Fault: Not initialising
Fix : Check brake switch and connections to sequence control panel

Fault: Tape creasing when 'back editing control' was working, prior to a
recording being made.
Fix: Bend the leading roller backwards or forwards to ensure that the
tape path is exactly central on this roller.

Fault: Tape creasing in search mode
FIx : Pinch roller

Fault: Chewing tapes and / or shuts down
Fix : Check reel motors

Fault: Intermittent tape damage with '7' displayed during rewind
Fix : Take up motor - bearing seizing up

Fault: Not accepting cassette
Fix : Solenoid coil driver transistor (BC876)

Fault: Intermittently stops and unlaces during play
Fix : Pinch rollers

Fault: Intermittently stops playing, unlaces and displays 'F2'. Also stops
during fast forward and rewind
Fix : Supply optocoupler

Fault: Loses sound after a few seconds
Fix : Pinch roller

GRUNDIG VS220

Fault: No play or intermittent no play - F1 flashes on display
Fix : Contacts on switch S4 dirty (brake solenoid switch)

Fault: Stops playing intermittently, unlaces and displays F2 - Also stops
during fast forward and rewind
Fix : Supply optocoupler

Fault: Three white lines on playback picture - one in the middle, two lower
down
Fix : Drum motor brushes require cleaning

GRUNDIG VS300

Fault: Will not accept cassette
Fix : Brake solenoid switch
Transistor T2141 (BC876)

GRUNDIG VS310

Fault: Dead
Fix : Diode D425

Fault: Poor reverse picture search
Fix : Video heads worn

Fault: Wow on sound
Fix : Capstan belt


GRUNDIG VS340

Fault: Intermittent play
Fix : Dead spot on capstan motor

Fault: Loop of tape intermittently sticking out of cassette after eject
Fix : Dead spot on capstan motor / dry joint on connection to PCB

GRUNDIG VS380

Fault: No clock display
Fix : Nicad battery

Fault: Record level display of FM audio intermittent
Fix : Dry joint of Transistor T2049

GRUNDIG VS400

Fault: Hum bars - No output from control track
Fix : Poor connections on plug A3 at chassis panel 1

Fault: Tape looping out of cassette on eject
Fix : Mode control switch

GRUNDIG VS440

Fault: No picture (snow) in E-E and record modes - playback Ok. No A+ supply
Fix : Transistor T485


GRUNDIG VS500

Fault: Dead - Switching transistor in PSU fails repeatedly
Fix : Mains fuse, Transistor BUZ90A, Resistor R1318 and Chip TDA4650

Fault: Chews up tapes - loads to half loaded position, then tape spills out
Fix : Spring 26 missing / not attatched correctly

HITACHI VT620

Fault: Chews up tapes intermittently. No PB sound or control pulses
Fix : Sub-loading arm not raising tape up to A/C head. Fit an additional
split washer on shaft to raise it

HITACHI VTM622

Fault: Stretching tapes
Fix : Check back tension and check that spacer washer is fitted under the
supply reel

HITACHI VTM830

Fault: Poor colour playback best seen with a dark picture where coloured
snow is present
Fix : Delay line CP303 (2H)

JVC HR-D120 / ITT VR3905

Fault: Cassette jammed in machine
Fix : Load switch bent - caused by forcing cassette in unit while in
standby mode

Fault: Drum speed hunting. Same on record and playback
Fix : Resistor R446 (270k), Pins 14 & 15 IC404

Fault: Goes to stop after a few seconds from any mode
Fix : Check phototransistor for supply optocoupler

Fault: No play - tape loads up but capstan motor not running
Fix : Loading belts slipping and poor contacts on loading switches

Fault: At switch on, left hand spool and capstan rotate for a few seconds and
then machine shuts down
Fix : CP1 open circuit

Fault: Not accepting cassette tape
Fix : CP1 open circuit on mechecaon

Fault: Goes to stop just after lacing up
Fix : AL and UL switches

Fault: Head drum running too fast
Fix : Capacitor C465 (100pF)

Fault: Intermittent cassette loading
Fix : Check Insert detect switches

Fault: Intermittent play or record
Fix : Drum motor

Fault: No forward or reverse search
Fix : Resistor R605 on A/S/M panel

Fault: No colour
FIx : XB401
Colour / monochrome / test switch at rear

Fault: No colour on record / playback. Low voltage on pin 15 HA11741
Fix : Capacitor C433 (0.022uF). Check BPF401

Fault: No functions and clock cannot be set
Fix : CP2 open circuit

Fault: Noise bands moving up picture. Cannot set up correct voltage at
TP423 with R463
Fix : Resistor R466 (270k)

Fault: Tape loads, runs for a few seconds then unloads
Fix : Pick up head

Fault: Tuning drift - BBC1 only
Fix : Replace Capacitors C21, C22, C23, C24, C25, Resistor R13 and
Diodes D14, D10 (HZT33-02) 33V

Fault: Winds for a few seconds, then stops and refuses further commands
Fix : AL and UL switches

Fault: Intermittent audio record
Fix : Replace Transistor Q8 with 2SD638S and add 5.6nF Capacitor across
Capacitor C48

Fault: Sound low on record
Fix : L4 open circuit

Fault: No audio in E-E mode
Fix : Transistor Q5 on tuner / IF panel

Fault: No clock display
Fix : Check / replace Chip IC2 and Transistor Q1


JVC HR-D140 / ITT VR3906

Fault: Will not accept cassette
Fix : Open circuit track at Diode D628

Fault: No functions - Eject not working
Fix : Diode D628

Fault: Red light on power switch not lit and drum not rotating
Fix : Fusible link CP4 (ICP-N10)

Fault: Plays for a few seconds, then unloads
Fix : Transistor Q1 on deck terminal PCB

Fault: 'On' light not lit but capstan rotates when the 'On' switch is pressed
Fix : Zener Diode D3 (3.9V)

Fault: 'Operate' light pulses on / off with video head pulsing at same rate
Fix : Fuse F2 (2A)

Fault: Goes into search mode after a while. Capstan rotates even when tape
has been ejected
Fix : Transistor Q603 (2SD637)

Fault: No clock display
Fix : Resistor R2

Fault: No clock display after about an hour has passed
Fix : Chip TL066CP

Fault: Intermittent blank raster on playback
Fix : Dry joint on coil L116

Fault: Intermittent colour on playback
Fix : Dry joint at BPF301
BPF301 Faulty - possibly open circuit

Fault: Picture has symptoms of dirty head, drum speed varying and rotating
backwards
Fix : Zener Diode D408 (5.1V)

Fault: No record - no 9V supply to Pin 2 of IC101
Fix : Transistor Q111 (2SC2655)

Fault: No switched 5V supply
FIx : Transistor Q10 (2SD638) and DIode D3

Fault: Not tuning, no setup of timer or clock
Fix : Chip IC601 (M50730-607)

Fault: Intermittent audio record
Fix : Dry joints on T1


JVC HR-D150

Fault: Drum rotation problems - running too fast and / or backwards
Fix : Diode D408

Fault: Drum not rotating - Accepts tape - Rewind and fast forward Ok
Fix : Fusible link B3

Fault: ON Led not lit but capstan rotates when on switch is depressed
Fix : Zener Diode D3 (3.9V)

Fault: 'Operate' Light pulses on / off with video head pulsing at same rate
Fix : Fuse F2 (2A)

Fault: Intermittent colour on playback
Fix : Dry joint on BPF301

Fault: Intermittent play / record
Fix : Loading belt

Fault: No clock display - No +5V supply to Chip IC301
Fix : Transistor Q401 (2SD638)

Fault: No functions - 5v switched rail not present
Fix : Capacitor C605 (0.022uF) and Transistor Q602 (2SD638)

Fault: No record - 9V rail to Pin 2 of Chip IC101 missing
Fix : Transistor Q111 (2SC2655)

Fault: Sound weak on playback
Fix : Capacitor C4

Fault: Sound intermittently weak on playback
Fix : Dry joint on Capacitor C4

Fault: No sound on playback or E-E
Fix : Chip IC1

Fault: No switched 5V supply
Fix : Transistor Q10 and Diode D3

Fault: Red light on power switch not lit and drum not rotating
Fix : CP4 (ICP-N10)

Fault: Plays for a few seconds and unloads
Fix : Transistor Q1 on deck terminal pcb


JVC HR-D170

Fault: Dead
Fix : Chip IC1 (STK5481)

Fault: No clock display, -30V supply to Pin 18 of CHip IC1 missing or low
Fix : Resistor R4 (220 ohms)

Fault: Dim or intermittent clock display
Fix : Dry joint on 5V regulator IC2

Fault: Intermittent functions
Fix : Check for loose earthing screw on motor sub-panel

Fault: Eject operation intermittent
Fix : Loose earthing screw on mecha connection PCB

Fault: Intermittent playback picture - sound Ok - Appears to be off tune
FIx : Dry joint on Capacitor C134

Fault: Intermittent playback picture
Fix : L15 (pin 13, IC101)

Fault: Intermittent playback
Fix : Dry joints on Capacitors C133, C134, C135 and C138

Fault: Reel motor not running
Fix : Chip IC603 on reel motor short circuit

Fault: Drum running too slow
Fix : Chip IC2 (VC2023A) on servo panel

Fault: Speed varies
Fix : Check connections on CN3 (servo panel)

Fault: Intermittently goes into rewind from play
Fix : Dry joint on supply photo sensor

Fault: Poor / intermittent tracking
Fix : Chip IC2 (VC2023A)

Fault: No channel change by remote or manual operation
Fix : Chip IC2 (M50440-391SP) on tuner / IF panel


JVC HR-D180

Fault: Dead
Fix : Chip IC1 (STK5481)
Chip IC602 and CP4

Fault: No flourescent display - all functions Ok
Fix : Chip IC101 (UPD75208CW)

Fault: No display / clock (-30V supply missing)
Fix : Resistor R4 (220 ohm)

Fault: Not showing ' time remaining' message
Fix : Loose earthing screw on opto-transistor / opto-coupler LED connections

Fault: Plays fast intermittently. Also no pause function - high t/u drive
Fix : Chip IC601

Fault: Intermittent sound on playback
Fix : Dry joint on capacitor C5

Fault: Channel selection / memory problems
Fix : Dry joint on Capacitor C7

Fauly: Clock losing time
Fix : Crystal X101 and adjust Capacitor C102


JVC HR-D225 / ITT VR3975

Fault: Drum speed hunting - same on record and playback
Fix : Resistor R446 (270k)

Fault: No colour - no signal at Pin 16 of IC401
Fix : Crystal XB401

Fault: Machine stuck in standby mode
Fix : Zener Diode D203 (5.1V)

Fault: Picture gives effect of line hold off frequency. Head drum rotating
too fast
Fix : Zener Diode D412 (12V)

Fault: Screen dark with picture flashing on at random
Fix : Transistor Q501

Fault: Tape not winding back into cassette when unloading
Fix : Resistor R272 (10k)

Fault: Tuner drifts. Voltage low at Test point TP6
Fix : Zener Diode D10 (33V)

Fault: No play - tape loads up but capstan motor not running
Fix : Check loading belts slipping and bad contact on loading switches


JVC HR-D230

Fault: Dead / no functions
Fix : ICP1

Fault: Drum speed varies when warm
Fix : Chip IC2 (VC2032A-2) - servo

Fault: No eject with squealing noise from loading belt or tape. Unlaces
and then shuts doen (intermittent)
Fix : Check for loose screw securing deck terminal panel

Fault: No functions at switch on. Makes a squealing noise then goes into
standby
Fix : Check earthing screw near capstan motor

Fault: Intermittent field roll on own recordings - Ok in E-E mode
Fix : Capacitor C134 (2.2uF)


JVC HR-D320

Fault: Dead
Fix : Chip STK5481

Fault: Intermittently loses playback picture
Fix : LPF102

JVC HR-D430

Fault: Very intermittent tape stopping, noises and tape damage.
Fix: Remove reel motor and clutch and inspect idler. Check by turning with
hand to see if rotation is rough / tight. If so, dismantle and check
for foreign material inside idler. The idler has only two sections.
Take up torque appears to rely on the motor drive plus the magnetic
flux / attraction between the two idler sections.

Fault: No capstan drive
Fix: The microcomputer chip IC601 delivers capstan on / off commands via
pins 52 and 53 to the M54644BL capstan drive chip IC604. Check for
outputs from IC601. Then check for outputs from IC604. Failure of
IC604 is the most likely cause of this fault.

Fault: Capstan runs slow
Fix : Chip IC2 (VC2032B-2) - servo

Fault: Dead
Fix : Check R2 (10ohm fusible), Capacitor C5 (47uF), Power trans panel and
Capacitor C12 (100uF) on regulator panel

Fault: No picture - Drum rotating backwards
Fix : Chip IC2 (VC2032B-2) - servo


JVC HRD455

Fault: During the last part of the loading cycle, as the pinch roller starts
to pull in, the loading motor slows down and struggles to complete the
loading sequence
Fix : Sticky grease on the lower drum casting - the bit with the 'V' blocks.
Clean the grease off with solvent and apply a smear of graphite grease

JVC HR-D520

Fault: No sound on playback
Fix : Chip IC601 - Pin 32 low

JVC HR-D530

Fault: Dead
Fix : Check Resistor R1 and Capacitors C5 and C6 on transformer panel

Fault: No sound on E-E
Fix : ICP2 open circuit on demodulator panel


JVC HRD540

Fault: Playback in the reverse direction
Fix : Replace capstan motor PU61003

Fault: When plugged in the cassette loading motor will start to run with no
cassette inserted, then unit will switch to standy. If a tape is
inserted while machine is on the cassette will load down and then
immediately eject - the housing motor continues to run
Fix : ICP Protector CP5 (ICPN38)

JVC HR-D565

Fault: No take up - capstan motor stops intermittently
Fix : Chip IC403 (BU2710)

Fault: Eject function is intermittent
Fix : Cassette motor faulty

JVC HRD610

Fault: Machine OK until pause or picture selected, then the picture has
lines across it (every 3mm)
Fix : Chip IC301

Fault: Playback picture has five thin tracking lines spaced equally apart
across the picture and the sound is muted
Fix : Loose exit guide - the mechacon chip can cause this symptom but the
audio sound will be erased while looking at the picture.


JVC HRD660

Fault: No front panel display but deck functions OK
Fix : Resistor R2 (47 ohms)

JVC HR-D700

Fault: Dead
Fix : Chip STK5481

Fault: No fluorescent display
Fix : Resistor R5 on 01 power transformer panel

JVC HR-D725

Fault: All segments of display on
Fix : Transistors Q1, Q2, Q3. Diodes D2, D13, D17, D18, D19, D20.
Capacitors C13, C14. Chip IC1

Fault: Intermittent play
Fix : Check loading mechanism for hardened grease

Fault: No fast forward or rewind
Fix : Chip IC204 (M50790SP)

Fault: No sound on E-E or playback. 9V missing from Pin 8 of IC5
Fix : CP3 and Transistor Q16

Fault: Tape often becomes damaged in reverse picture search
Fix : Guide arm between capstan and TTL reel

Fault: No colour in record / playback
Fix : BPF402

Fault: No record
Fix : Transistor Q41


JVC HR-D755

Fault: Dead
Fix : Capacitor C23 (47uF) and Diode D20

Fault: Accepts cassette but no functions working. Tape ejects if machine
is switched on and off
Fix : Cassette end load switch faulty - in cassette housing

Fault: Intermittent loss of capstan lock - Hum bars rolling through picture
on playback
Fix : Dry joints on CN401

Fault: Intermittent operation of mechanical functions ie play / rewind / etc
Fix : Loading / mode motor open circuit or seizing up

Fault: Patterning over picture on playback after about 10 minutes
Fix : Chip IC2 (MSM6989RS)

Fault: Will not switch on - Will accept a tape but won't eject
Fix : Chip IC202 (M50742-621)

JVC HR-D800

Fault: Not accepting tape
Fix : Suspect Chip STK5481

Fault: Plays backwards
Fix : Suspect capstan motor


JVC HR-S5000

Fault: No luminance on playback - sound Ok. E-E signal normal
Fix : Capacitor C121 (10uF)

Fault: Video overloaded with crushed sync in E-E mode
FIx : Capacitor C14

Fault: No E-E signals (Pin 23 of IC1 high)

MITSUBISHI HS300

Fault: Not tuning in
Fix : Diode D7A5 (1S2076A)

MITSUBISHI HS302

Fault: Hum bars after running for about 2 hours
Fix : Chip IC402 (AN6341N)

Fault: Poor playback picture with white streaks
Fix : Capacitor C204 (4.7nF)


MITSUBISHI HS303

Fault: No functions
Fix : Chip IC500 (MC1417BCP)

Fault: Poor rewind
Fix : Supply and takeup motors

Fault: No rewind or review - may power off when review is selected
Fix : Transistor Q578 (PN202S-R)

Fault: Tape looping, no cue or review, poor rewind or hum bar on picture
Fix : Reel motor

Fault: Fast forward and rewind slow
Fix : If Resistor R5K7 (3.3k) has a 6.8k resistor in parallel then remove it

Fault: Capstan speed too fast and not switching off. No waveform on Pin 7 of
Chip IC4A1
Fix : Chip IC4A1 (AN6341N)

Fault: Capstan speed too fast and not switching off. Waveform on Pin 7 of
Chip IC4A1 Ok
Fix : Transistor Q4A3 (2SC2603)

Fault: No rewind / poor rewind and / or intermittent play
Fix : Reel motor

Fault: No line sync - incorrect drum speed
Fix : Chip IC4A0 (AN6350)

Fault: No line sync - drum rotating too fast
Fix : Crystal X601 (4.43MHz)

Fault: Intermiitent operation of clock
Fix : Capacitor C8F2 (0.47uF)

Fault: Colour intermittent in playback
Fix : Capacitor C6E3 (150pF)

Fault: No colour on record or playback
Fix : Realign 4.43 oscillators

Fault: Streaking on highlights
Fix : Replace Video heads

Fault: No record - playback Ok
Fix : Capacitor VC2B0 (50pF) on Y/C panel

Fault: Not tracking pre-recorded tapes
Fix : Loose tape guides

Fault: Sound varies - capstan spped varying
FIx : Chip IC4A0 (AN6350)

Fault: Wow and flutter on sound with hum bars
Fix : Pinch roller, capstan shaft, capstan motor

Fault: Intermittent recording of audio, no audio or no audio erase
Fix : Solder leads of plug VK directly to PCB

Fault: Hum on audio / maybe intermittent
Fix : Relay K3F0

Fault: Motorboating and / or no audio on recordings
Fix : Relay K3F0

MITSUBISHI HSB11/31/41

Fault: Failure to play or record (not lacing up fully) either permanently
or intermittently
Fix : Loading motor stalled due to pinch roller jamming against the top of
the capstan tower. The pich roller arm assy slides up and down a
vertical pole which becomes sticky. Clean and lubricate and grease
the spiral cam that drives it.

ORION VXL35

Fault: Dead with no clock display
Fix : Transistor Q02 (2SD1207)


PANASONIC NVD80

Fault: Poor playback picture and noisy Hi-Fi sound
Fix : Replace drum

Fault: On SP recordings there are noise bars across the picture in cue and
review - OK in LP recordings
Fix : Break in track on underside of PCB between pin 8 of connector BP3001
and pin 17 of the servo pack connector

PANASONIC NVF55

Fault: Dead - No output from the power supply module
Fix : Check chip IC1103 in power supply module - Check earth pin on
chip IC1103 is connected to 0 Volts. The track on the pcb that
connects the ground pin to 0 Volts becomes open circuit around the
nearest connection to the screening can

PANASONIC NVF65

Fault: In E-E mode & unit's own recording, unit loses sound intermittently
Fix : TV Demodulator pack - Surface mount link intermittently not connecting

Fault: Tuner not working - no received pictures - Playback & Test signal OK
Fix : Chip IC7502 (MN12C261D)


PANASONIC NVF70B

Fault: Unit switches off when review is selected
Fix : This occurs when the review motor is powered up
Check supply Resistor R6035 (0.9ohms) - This usually fails because
the motor drive chip and/or the motor is faulty

Fault: Unit switches off when the tape is unloaded from stop-2 to stop-1
Fix : Release lever 160 (Part no. VML2200) faulty - stuck on its pivot

Fault: Noisy mechanism (squeaks, rattles and buzzes)
Fix : Tension unit (part no. VXA3516) and soft brake (part no. VXL1873)

PANASONIC NVF75

Fault: The E-E picture rolls and pulls though video playback is Ok
Fix : Chip IC3901 (M51292FP)

PANASONIC NVFS90

Fault: Poor picture quality. Faint flickering lines. Worse in LP mode
Fix : Remove screening can X3301 and resolder the crystal associated with
the 1H delay line CCD chip IC3302


PANASONIC NVG7

Fault: Vertical rolling with a known good tape. In addition the tape is
crinkled along its bottom edge.
Fix : Pinch roller

PANASONIC NVG40

Fault: Machine accepts video tapes and half laces correctly but will not
eject.
Fix: Solenoid only operates fully in one direction

PANASONIC NVG45

Fault: Capstan intermittently runs fast in all modes including lacing and
unlacing. When fault is present in play mode, the machine toggles
between SP and LP
Fix : Replace resistor R2184 (1k surface mount device)

PANASONIC NVJ30

Fault: Will not tune in E-E mode
Fix : Chip IC7502 (MN12C261D5)

PANASONIC NVJ35

Fault: No record chroma
Fix : Filter package FL801 (ELB4W002) open circuit


PANASONIC NVJ40

Fault: At power up, the cassette mechanism tries to load, even with no tape
Fix : Replace capstan chip (BA6435)

PANASONIC NVL20

Fault: Poor E-E pictures / sometimes can be cured by tapping tuner &
RF converter
Fix : Remove tuner and RF convertor and resolder dry joints

PHILIPS VR202

Fault: Dead - Transistor BUT11 and 3.3 ohm resistor keep on blowing
Fix : Capacitor C2127 (330nF) and Transistor 7126

Fault: No sound or picture in playback - no other deck commands accepted
Fix : P8052AH - JSTD1 - 1U


PHILIPS VR6293

Fault: BUT11AF transistor keeps on failing at random intervals, sometimes
lasts hours, sometimes lasts weeks.
Fix: Fit Philips modification kit 4822 310 31817. Power supplies with a
green label have already been modified.

Fault: Dead - BUT11AF transistor blows immediately
Fix : Resistor R109, Mains fuse and Chip IC124 (CNX83A)

Fault: Dead - BUT11AF blown
Fix : Resistor R3109 (3.3 ohms) and item 7124 (optocoupler)

Fault: Unit intermittently shuts down if record or playback is used - Head
motor not rotating due to excessive brake force
Fix : Change capacitor C2040 from 100nF to 10nF

Fault: Ejects tapes random / permanently
Fix : 3.3 ohm Resistor in PSU

Fault: Drum intermittently stops or refuses to spin
Fix : Lower drum motor

SAMSUNG SI1260

Fault: Unable to eject tape / insert tape
Fix : Diode D212
Chip IC206

Fault: On power up the loading motor runs in the eject direction, stopping
only when the syscon controller chip decides that a fault condition
has occured and shut down the power supplies
Fix : Mode switch (part no. 63579-101-026)

SAMSUNG VI1260

Fault: Machine laces up and then goes to standby (sometimes intermittent)
Fix : Replace Diodes D109, D110 **ALWAYS CHANGE BOTH**

SAMSUNG VI710

Fault: Dead - No functions
Fix : Regulator chip STK5333


SAMSUNG VI730

Fault: Blank raster - playback OK
Fix : Chip IC404 (TA7348)
Capacitor C415 (10uF @ 25V)
Resistor R416 (75 ohms)

Fault: No sound - playback OK
Fix : Chip IC403 (TA7348)

SANYO VHR3300

Fault: Loading mechanism jammed with the half-load pole failing to move out
of the way of the entry guide on its way back towards the cassette
during the unthreading process
Fix : Replace lever assembly - No. 79 in the mechanical parts (2) diagram.
The metal pin has become loose or strained


SHARP VCA5011HM

Fault: Fails to accept a cassette
Fix : Zener Diode D805 (HZS12EB3 12V)

SHARP VCA615HM

Fault: Many odd, intermittent faults
Fix : Replace mode switch

SHARP VC386

Fault: Intermittent colour in record and playback
Fix : Adjust AFC control to give 4.7V at pin 29 of IC501

SHARP VC581

Fault: No take up of tape
Fix : Check idler wheel
Is the idler wheel making contact with the take-up spool or reel motor
If idler is fouling motor fixing screws, check that motor is fitted
right way round - It can be fitted 180 degrees out.

SHARP VCA100H

Fault: Noisy in review
Fix : Replace pinch roller

Fault: Low sound output and intermittent poor playback sync
Fix : Replace worn audio control head


SHARP VC780HM

Fault: Intermittently goes into play from cold and then unlace because of
capstan not rotating
Fix : Cam switch

SONY SLV270 Mk II

Fault: Once the unit has reached the half-load state, no deck functions will
work. The drum is not rotating, the microcontroller not allowing any
functions except eject
Fix : Capacitor CC243 (surface mount) is leaky and has a resistance of a
few k. These resistors fail quite regulary. Note: this unit is a
Grundig chassis.

SONY SLV373

Fault: Plays pre-recorded tapes perfectly but with own recordings, only the
blue mute raster present
Fix : Head amplifer Chip IC001

SONY SLV615

Fault: No rewind or reverse picture search
Fix : Reel sensor PH001 faulty (part no. 8-759-144-33)


SONY SLVX10

Fault: No sound and a snowy picture on playback
Fix : Chip IC352 (LA7123)

Fault: Intermittent / Permanent failure to record sound
Fix : Transistor Q2001 (2SD734)

TELEFUNKEN VR1930

Fault: Dead
Fix : Capacitor C419

Fault: No colour in playback
Fix : XB401

TELEFUNKEN VR2931

Fault: Hum bar in monitor screen
Fix : Capacitor C3 (2200uF)

TELEFUNKEN VR4935

Fault: Function LED not lighting but machine does accept cassette tape and
when play is selected the tape laces up and then immediately unlaces.
In fast forward and rewind the machine will run for a couple of
seconds and then stop.
Fix: STK5481 voltage regulator faulty.


TOSHIBA V5470

Fault: Drum motor runs after cassette is ejected but not with VTR/TV switch
in the TV position
Fix : Diode D988 on relay panel

Fault: Frame bounce / rolls only on pause, picture search and review
Fix : Chip ICH01 (TC4528)

Fault: Record key releases intermittently on timer mode
Fix : Upgrade Resistor R619 from 150k to 330k on servo logic PCB

Fault: Slows down or stops during rewind
Fix : Rewind idler

Fault: Wow and flutter on audio
Fix : Drive surfaces, pulleys and belts
Capstan drive motor

Fault: Playback picture has 2 frames superimposed on top of each other
Fix : Capacitor C608

Fault: No video on recordings
Fix : Capacitor C419 (0.022uF)

Fault: Smeary picture on playback
Fix : Chip IC402 (TA7636) on PWB2109 video PCB

Fault: Tuner drifts
Fix : Chip ICA01 (TC9002AP), ICC01, ICC02


TOSHIBA V8600

Fault: Timer operation intermittent
Fix : Drive belts and pulleys

Fault: Knocking noise while playing tape
Fix : Check planetary gear for contacts with Capacitors on video panel

Fault: The 'ON' indicator flashing or not illuminated
Fix : Resistor R816 (15 ohms)

Fault: Inverse picture / odd colours
Fix : Check TV-VTR switch or Transistor Q661 (2SC2236) on servo logic panel

Fault: No E-E - No signal - Supply voltage low to modulator
Fix : Transistor Q661 (2SC2236)

Fault: Noisy picture - No test signal
Fix : Transistor Q661 (2SC2236)

Fault: No colour
Fix : Chip IC208 (MB14300M)
L215

Fault: Intermittent colour - flashing red, green and blue, 15.625kHz at pin
15 of Chip IC208 incorrect
Fix : Chip IC208 (MB14300M)

Fault: No colour in pause
Fix : Chip IC202 (CX130)

Fault: Noisy playback picture using own recordings - prerecorded tapes Ok
FIx : Resistor R400

Fault: Picture jumps in pause and play modes
Fix : Chip IC501 (TM4217P)

Fault: Pause picture quality poor
Fix : Remove the bottom cover and reverse the plug from the heads red and
white leads

Fault: Machine stuck on channel 1
Fix : Transistor QA03

Fault: Tuner drifts
Fix : Diode D815

TOSHIBA V8700

Fault: Poor pause operation - freeze frame picture poor
Fix : Remove bottom cover and reverse the plug from the heads - red and
white leads

Fault: Intermittent colour flashing red, green, blue - Signal (15.625kHz) at
pin 15 of IC208 incorrect
Fix : Chip IC208

Fault: Intermittent timer operation
Fix : Clean / replace drive belts and clean pulleys

Fault: Knocking noise whilst in operation
Fix : Check planetary gear for contact with C's on video panel - redress if
necessary

Fault: Negative picture / incorrect colours
Fix : Check TV / VTR switch or Transistor Q661 on servo logic panel

Fault: No colour in still / search
Fix : Capacitor C246 or delay line X204

TOSHIBA V9600

Fault: Cassette motor very sluggish
Fix : QL85 on UT01 panel

Fault: Loads and laces up very quickly, mechanical noise during play. Tape
ejected very quickly. 14V rail reads high
Fix : Transistor Q902 on U901 panel

Fault: No rewind or slow rewind
Fix : Idler clutch assembly

Fault: Continuously tries to load
Fix : QL82

Fault: Ejects cassettes at random
Fix : Check 'cassette in' switch or for missing spring from switch lever

Fault: Capstan rotating at excessive speed
Fix : X961

Fault: Squealing noise on rewind
Fix : Worn ceramic rollers on guide ring or worn upper rollers

Fault: No colour on playback
FIx : Chip IC206 (TA7347)

Fault: No line lock
Fix : Check adjustment of T961

Fault: Smearing on playback video
Fix : Chip IC104 (TA7636)

Fault: Smearing on video
Fix : Chip IC201 (TA7637)