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EURAS System

NVH75 / PANASONIC [Video recorder - VHS HiFi]

The EURAS repair tip database for professional technicians and service engineers supplies the following faults for NVH75 / PANASONIC.

List of fault symptoms:
  • Intermittently E-E picture only displays ragged dark raster.
  • Clicking solenoid when lacing in and/or unlacing.
  • Cassette is retracted. Appliance initializes. Sometimes reel table does not run during initialization. Occasionally PB is too quick.
  • Cassette is lowered and the tape is only pulled in halfway. (with circuit diagram extract)
  • Appliance does not accept the cassette and shows F1 in the display. The compartment lowers automatically and comes back up again.
  • Sound is distorted through the HF modulator but is O.K. coming through phono plug. (picture attached)
  • Does not load tape.
  • Poor servo lock. No sound and counter not working. (picture attached)
  • VU level meters are different with a mono signal.
  • Tape is damaged.
  • Power LED and display flicker when connecting the mains voltage or mains does not supply enough power. (extract of circuit diagram attached)
  • Tape is ejected after insert or after being loaded for a short while.
  • Colour interference through picture, the head motor runs out of sync intermittently.
  • Dead apart from a whistling noise for a few secs at switch on.
  • Tape is damaged. Switches off by itself.
  • No functions. Tape stuck.
  • Dead. Hissing coming from PSU.
  • After current failure appliance does not function. Nothing on display. Drive rattles.
  • Colour noise in picture.
  • No sound, poor servo lock and no counter. (part of circuit diagram displayed) (NVH75 tips)
  • Motors run but magnet does not switch.
  • In PB take up reel table does not turn.
  • Mechanical noise every second in PB mode.
  • No characters in display. No exchange of data between timer PDC board and the channel select board.
  • Loud drive noises can be heard during lacing up and unlacing.
  • No display. Tape stuck.
  • No switch off at end of tape (neither tape start nor tape end).
  • Appliance runs normally then occasionally becomes very hot on the housing lid. No longer reacts to operation and tape loops form.
  • No REC with SCART AV bus. (with circuit diagram extract)
  • Part info: Value of zener diode D18 in secondary power supply. (service info for PANASONIC -NVH75)
  • The clock display does not function. (with circuit diagram extract)
  • The mechanism shifts. Readjust mechanism. After switching on appliance starts to load cassette and switches off again. Mechanism is in incorrect position again. (NVH75 tip from PANASONIC)
  • Sometimes no cassette accepted. Sometimes laces in and displays F1.
  • No picture via the RF output.
  • Dead (after power failure).
  • VU meter levels do not tally with a mono signal (NV-D80 only).
  • Tape will not lace up.
  • After initialization run cassette is not recognized or no hour/mins display of the casette. Only counter display.
  • In drive position REW mode, take-up reel table is not moved.
  • No ATTS, head drum does not run, Play does not function, no fault indication F...
  • Cassette compartment gear rack skips the pinion.
  • Display does not flash. Cassette stuck in appliance.
  • Slow tracking adjustment procedure - Servo circuit. (part of circuit diagram displayed)
  • Starts up, capstan motor turns slowly. No further control.
  • PB of a cassette with normal sound only gives noise. Both of the red LED's next to the VU-meter are lit up. (part of circuit diagram displayed)
  • Electronic protection intervenes.
  • The tape is creased.
  • Diode D1008 (MA185) constantly fails after switch on.
  • F-1 on display. Cassette is not ejected. Drum starts up for a short time otherwise no function.
  • Exact ref of the power supply IC STRD1806.
  • Does not accept tape. intermittently.
  • The head drum runs continuously. (extract of circuit diagram attached)
  • If cassette and then the slide blocks, drive slips.
  • No function after mains disconnection.
  • The appliance does not switch on (part of circuit diagram displayed) (NVH75 tip from PANASONIC)
  • Tape laces up then unlaces during review mode, switches to E-E then plays.
  • Tape end disconnection fails. When rewinding video tape is torn out of the cassette at the end of the cassette. (extract of circuit diagram attached)
  • The appliance initialises, but does not rewind.
  • No picture through the AV (scart and BNC).
  • Picture fluctuates rhythmically/ laterally.
  • Tape laces then unlaces.
  • No display.
  • Tape keeps reeling sometimes when unlacing or switches off sometimes when reeling.
  • Display is dim. (picture attached)
  • Appliance only part loads then stops, no other functions possible apart from eject.
  • No picture on E-E or PB.
  • Defective programme switch (always switches to programme 1). No tuning. Tape switch does not function. (Always switches back).
  • No sound - neither Hifi nor normal track. Visible tracking interference. Counter does not work. (with circuit diagram extract)
  • No mechanical functions. (PANASONIC - NVH75 information)
  • No mechanical functions. Shuts down.
  • In REW blocks after a few rotations and the tape unwinds. Mechanism in safety mode and tape is ruined.
  • No start-up.
  • No tape recognition during ATTS operation. When reeling or in PB, switches to stop after approx. 10 secs.
  • Cassette not accepted, due to mechanism out of synchronisation.
  • The EE picture and the picture coming from the tuner are fuzzy.
  • Horizontal sync MMV2 adjustment.
  • Voltages in load: Pin 3 = 0.3V (5.2V), Pin 4 = 1.7V (6.2V), Pin 5 and 6 = 1.3V-2V (12.6V/13.7V). (picture attached)
  • Capstan motor speed varies in PB. No colour.
  • Drive is blocked after cam gear (pos 111) has slipped through. Sector gear (Pos. 39) is broken.
  • Mechanical problems.
  • Intermittent picture during EE operation.
  • No function. The PSU does not start. If the voltage is measured with the test appliance at STR1606 pin 3, the appliance switches on.
  • In PB function the head drum runs but does not lace up the tape (intermittent). The PSU or something else makes a lot of noise on the FM band. (PANASONIC - NVH75 information)
  • High quality amplifier gain adjustment.
  • Playback works ok, but EE operation is not possible. (+ extract of circuit diagram)
  • No REC. (part of circuit diagram displayed)
  • Video frequency response adjustment procedure.
  • Solenoid switch does not pull in.
  • Tape guides engage but jam just before automatic identification of cassette length (AIDC) is activated in PB mode. Display shows F1.
  • Video tape is not unlaced completely.
  • Intermittent loss of colour in the record mode.
  • No colour in PB. Record is ok. (extract of circuit diagram attached)
  • No cassettes ejected at the start. Works normally but programme 1 flashes constantly.
  • No secondary voltages. 300V on the primary.
  • No function when power supply cold. When appliance starts, Program + and - buttons doesn't work.
  • Interference in EE picture. (part of circuit diagram displayed)
  • Picture is not recorded but sound is. (+ extract of circuit diagram)
  • The tape comes out again during record. The appliance goes to playback when loading the tape.
  • Audio deviation adjustment.
  • Can be switched on, then capstan motor turns slowly with cassette in appliance. No more operation possible. Then switches off again.
  • Dead. Lift jammed halfway.
  • Appliance does not take any function, also the cassette is not accepted. (picture attached)
  • Noise in right channel.
  • No function, no display, low chirping of PSU.
  • Wow and flutter. (+ extract of circuit diagram)
  • Reeling not working.
  • Luminance REC current adjustment procedure - Luminance, chrominance and head amp section. (with circuit diagram extract)
  • No colour. Sound is muted. Interference.
  • Cassette compartment is pulled in and pushed out at switch on. This is repeated until appliance switches off.
  • Dead. (picture attached)
  • Tape stuck.
  • Start and end sensors do not function. (with circuit diagram extract) (NVH75 tip from PANASONIC)
  • Dead after tape is accepted.
  • PG shifter adjustment procedure - Servo section. (NVH75 PANASONIC repair tip)
  • Tape loads half way then comes out of cassette.
  • No sound during L-R or L+R channel. (+ extract of circuit diagram)
  • No deck functions and/or information on display is corrupted.
  • No REC, only records grey, vertical lines.
  • Lifting magnet in the drive rattles. (part of circuit diagram displayed)
  • In appliance cassette is in continuous REC. Commands are not accepted from RC.
  • Sound multiplex detection adjustment procedure - Decoder section.
  • Tape drive function too slow.
  • The head drum runs continuously, all other functions are O.K. (extract of circuit diagram attached)
  • Laces in tape. Tape runs but ATTS is not carried out. Switches off with F1. FF and REW, PB (too quickly) is possible for a short time.
  • Defective tape drive
  • FM audio carrier frequency adjustment.
  • No functions (intermittently).
  • Programs drift off tune.
  • HIFI playback is correct, but recording is only possible when passing through the longitudinal track.
  • Shuts down when REW selected.
  • Chrominance REC current adjustment procedure - Luminance, chrominance and head amp section. (extract of circuit diagram attached)
  • No EE picture possible. Only the counter and the clock flash on the display. (extract of circuit diagram attached) (service info for PANASONIC -NVH75)
  • Appliance is locked.
  • Toothed rack in cassette compartment skips.
  • Error code "F1" and "7, "TIMER" flashes in display. No control.
  • Power supply blocked.
  • Left reel table does not run backwards in REC/Pause.
  • In FF or REW, tape is torn out of cassette.
  • In FF and REW switches to F1.
  • Squeaking between mode changes. (service info for PANASONIC -NVH75)
  • Drive mechanism makes rattling noises. Does not accept cassette. Display blinks and indicates "F7".
  • No eject. Other functions OK .
  • Horizontal sync MMV1 adjustment. (NVH75 PANASONIC repair tip)
  • Occasionally pinch roller does not position itself against capstan. Cassette loads ok.
  • Cassette does not lower completely. Appliance displays F1.
  • Accepts cassette up to the stop position, capstan continues to turn , then F1 is displayed.
  • Cassette threads in only partly.
  • No EE picture, the picture is black. (with circuit diagram extract)
  • STEREO separation adjustment.
  • In PLAY and in RECORD the tape curls and the top part deteriorates.
  • Dead. Noise from head drum motor.
  • High pitch noise E-E mode, noise in hi-fi amp. (part of circuit diagram displayed)
  • Drive does not function, makes a tapping noise.
  • No function. Crackling sound from PSU.
  • Timer muting frequency adjustment.
  • Head servo fault, picture tips over sideways.
  • Capstan makes noises.
  • Chroma recursive adjustment. (NVH75 tip from PANASONIC)
  • No function,display dark.
  • D8 (MA185) and D18 (MA2200B) S/C.
  • Cassette is accepted and laced up into Stop-Position, however straightaway afterwards a piece is unlaced. Appliance switches off and locks.
  • Malfunction, the capstan motor occasionally runs or not at all.
  • Stops after approx. 45 mins. playing time. Tape stays laced up, display goes dark and then displays F1. After pressing e.g. Play unlaces appliance then laces up again then functions again for approx. 45 mins.
  • Tape start and end are not recognised. (+ extract of circuit diagram)
  • REW motor does not function.
  • Faulty REW mode. Appliance locks during reverse search. PB and forward picture search are OK.
  • Displays F1 after tape loading, then all functions are blocked, except for EJECT.
  • Appliance does not lace up correctly. (with circuit diagram extract)
  • After inserting the cassette, the lacing bolts stop halfway up. Capstan can be heard running continuously during this. F1 error appears. (service info for PANASONIC -NVH75)
  • Drum and capstan motor are not locking. Interference in E-E mode.
  • Head switching in pictures of own recordings. (part of circuit diagram displayed)
  • FM detection transformer adjustment.
  • Tape loops in Eject and REV.
  • The appliance does not function (display is dark). (part of circuit diagram displayed)
  • F1 displayed with the so called appliance series due to cassette compartment blocking.
  • The display is dark, the cassette is taken , the audio meter is lit up but no other function is possible. (with circuit diagram extract)
  • Under load the 5V and 6V control voltages are missing. Without a load there is only voltage on pin 4 of IC1001.
  • The drive mechanism is stuck. Appliance does not accept the cassette and indicates F7. (PANASONIC - NVH75 information)
  • Appliance laces up very slowly and after playing may not eject.
  • Faulty tape loading. Magnet sticks and unsticks.
  • Head drum jerks in PB mode after a certain time.
  • When pressing Play key, mechanism positions correctly with difficulty or switches to "Stop". Sometimes stops in any mechanical position, especially during REC.
  • Chewing tapes.
  • Appliance loads the cassette and laces up the tape. Unable to eject the cassette.
  • The remote control does not work, normal operation is ok. (+ extract of circuit diagram)
  • Main audio output level adjustment.
  • The appliance accepts the cassette, but no drive function possible, but the symbol is displayed. (NVH75 tip from PANASONIC)
  • Any tape transport mode will take place when commanded but will only take place for about 4-6 seconds. EE ok but no sound.
  • The audio meter lights up. The appliance does not accept any command. (picture attached) (NVH75 PANASONIC repair tip)
  • Cassette compartment jams.
  • During record the appliance switches off after a few seconds, but not during playback. (part of circuit diagram displayed)
  • Coloured striations in the picture in PB.
  • Dead. Tape stuck. (NVH75 tip from PANASONIC)
  • Disk drive is locked and F1 displayed. Disk drive works again, if it is freed with brake lifting magnet and fault F1 appears again later.
  • After a certain time the appliance loses the stored stations. (part of circuit diagram displayed)
  • Intermittently sound is poor and mistracking. (+ extract of circuit diagram)
  • No sound in record. EE operation is ok. During PB of this recording, rhythmic interference zones occur in the picture every 10 secs.
  • Mechanical noise at switch on. After a few secs display flashes in same rhythm. Cassette is blocked in mechanism which may be unsynchronised.
  • Magnet clatters or PSU doesn't start up.
  • Audio muting adjustment procedure - Audio section.
  • With some types of cassettes, appliance blocks in FF or when the display indicates F1 and the mechanism blocks.
  • Appliance unlaces again after 3 secs.
  • Mechanism jammed.
  • Relay switches too much during lacing process.
  • Slow lace up. Cassette ejected.
  • Takes in tape but ejects it immediately. Display shows: "Tape". (PANASONIC - NVH75 information)
  • Drive rattles. No display.
  • VCR accepts the cassette but tape is not loaded. Error code F1 is displayed.
  • The capstan motor runs constantly backwards -also during play and FF. (with circuit diagram extract)
  • Crackling when cassette compartment moves down/up.
  • Occasionally drive functions are distorted.
  • When ejecting tape it jams on tape guides, this is happening once out of 100 times.
  • Poor cold start, poor colour, does not lace properly.
  • Mechanism solenoid chatters and cuts out.
  • No picture or no sound. Weird responses. (PANASONIC - NVH75 information)
  • LEDs are not lit or tapes not accepted at switch on.
  • No functions. (extract of circuit diagram attached)
  • Counter does not function in FF or REW. OK in picture search and PB.
  • Tooth segment is broken.
  • Appliance blocks when cassette is loaded.
  • Occasionally tape loops form when unlacing. The left reel table pulls the tape back too late.
  • By PB, tape is loaded, after that relay cannot release and VCR stops. By hand OK.
  • Cassette is loaded and immediately unloaded. Display shows F1.
  • Sound multiplex detection adjustment.
  • Clock is dark, cassette is accepted but not ejected again. Audio meter lights up. Appliance does not accept any commands. (+ extract of circuit diagram) (service info for PANASONIC -NVH75)
  • No colour during PB. Using a different recorder the colour of an own recording is present. (with circuit diagram extract) (PANASONIC - NVH75 information)
  • Does not switch automatically to normal track when cassettes without HiFi recording are used. (+ extract of circuit diagram)
  • The capstan motor will not turn. (picture attached)
  • STEREO separation adjustment procedure - Decoder section.
  • Mains audio output level adjustment procedure - Decoder section.
  • PB audio switch adjustment.
  • IC7501 clock adjustment.
  • Tape stuck. No operation.
  • Eject and/or reverse search do not function or function incorrectly. (extract of circuit diagram attached)
  • Does not lace up fully. Magnet pulls in but releases too early.
  • The appliance does not function but the timer works. (extract of circuit diagram attached) (NVH75 tip from PANASONIC)
  • Appliance races in PB and REW but no picture. (+ extract of circuit diagram)
  • 4,43MHz on IC202 and 5V on pin 16 of IC2001 is missing. Servos do not run. (with circuit diagram extract)
  • No picture through the HF and video out. (part of circuit diagram displayed)
  • The sound is too low even in EE function. (picture attached)
  • Relay ticks in drive (switches on and off).
  • Display flashes and at times switches on but does not display the programme number and does not tune. Goes ok in Play. (+ extract of circuit diagram)
  • Capstan motor has no power, the cassette cannot be laced in.
  • In SP REC there are noise bars across picture. OK in LP REC.
  • Impossible to remove cassette. Displays F1 and no further functions. When cassette is unjammed manually, everything starts up again and F1 disappears but fault reoccurs after 2 months.
  • The tape rubs on the synchro head. The lower edge of the tape is creased.
  • In Eject cassette goes in again straight away.
  • No PB. Switches off before complete lace-up. End position is not reached.
  • In Standby (0.7 A) the current consumption is too high.
  • Cassette not accepted. After switch on starts up for a short time then fails. 0.00 on display. (with circuit diagram extract)
  • No AID function and goes into rewind. No other function. Mechanism constantly moving but no error displayed.
  • Leaves loop of tape when EJECT selected.
  • Accepts cassette but the two shafts which put the tape in Stop position do not perform their movement right to the end and stop half way. VCR goes into standby.
  • Audio muting adjustment.
  • No loading. The cassette is not lowered completely and jams.
  • No mechanism operation when cassette inserted.
  • Audio bias current adjustment procedure - Audio section.
  • No function. No voltages at plug P1001.
  • Solenoid switches on/off a few times when tape is inserted. Intermittently tape is threaded in and then unlaces.
  • Capstan is too slow. Grinding sound.
  • Clock loses settings after approx 10 mins power failure.
  • After ejecting cassette appliance retracts cassette again. (PANASONIC - NVH75 information)
  • The cassette is accepted and loaded until stop position, but then part of the tape is immediately unloaded. The appliance then switches off and locks.
  • Cassette compartment draws the cassette only halfway in. Appliance shows F1 in the display. (NVH75 tips)
  • AV-tuner switch-over is not possible.
  • Cassette is spontaneously ejected in Play or REC in LP mode. (with circuit diagram extract) (NVH75 tip from PANASONIC)
  • Tape laces up ok but does not run fast enough.
  • PSU chirps. (picture attached)
  • When plugging in HF, the K36 transmission channel disappears. The picture is blurred or has no colour.
  • The tape creases during play and tape loops form when winding.
  • FM audio recording current adjustment procedure - Audio section.
  • If tape has run back, appliance no longer goes to PLAY.
  • No colour or the colour is intermittent during playback. (with circuit diagram extract)
  • VCO adjustment.
  • Mechanism cuts out in some modes. (with circuit diagram extract)
  • The stations cannot be stored. (extract of circuit diagram attached)
  • When operating directly the picture is noisy and the recorder picture is missing.
  • All the segments light up weakly in the background. Otherwise the appliance functions correctly. (with circuit diagram extract)
  • Display shows a flashing F1 after inserting a cassette and VCR carries out any functions. Battery OK.
  • Does not accept tape. (part of circuit diagram displayed)
  • Timer clock adjustment procedure - Timer section.
  • At Power On cassette compartment attempts to start up without a cassette then switches off and F1 on display. Programme 1 flickers.
  • Toothed wheels of the drive control skip.
  • FM audio carrier frequency adjustment procedure - Audio section.
  • Switches in PB and display «AIDC».
  • No EE picture and the capstan runs too fast during PB.
  • Fault F1. After removal and fitting of compartment everything is ok for a short time.
  • When pressing the eject button the tape is not laced back into the cassette.
  • The video tape creases, tears or forms loops.
  • No eject, in fact machine is sluggish when lacing the tape. (NVH75 tips)
  • Cassette housing does not open or close completely.
  • No initialisation, electromagent no longer switches after plugging in the mains plug.
  • Audio output level adjustment procedure - Decoder section. (NVH75 PANASONIC repair tip)
  • Black picture appears in PB function (as in AV). Jumps again to tuner function if Stop pressed.
  • The tuner picture sometimes disappears and has interference. It appears when there is movement or knocking.
  • Initialises with much difficulty therefore only normal counter display. All other drive functions are ok.
  • Does not playback correctly. (with circuit diagram extract)
  • No eject.
  • Green screen with flyback lines, loses memory.
  • No display light. (with circuit diagram extract) (NVH75 tips)
  • Blocks on channel 99 at switch on. Impossible to change. OK in PB. (+ extract of circuit diagram) (NVH75 PANASONIC repair tip)
  • PSU has no function.
  • Accepts cassette jerkily, periodically display brightens then darkens.
  • Cassette is accepted. ATTS is not carried out.
  • No function, the appliance whistles.
  • An electricity failure detection adjustment procedure - Timer section.
  • Incorrect REW and FF after a while.
  • The threading magnet "jitters". (NVH75 PANASONIC repair tip)
  • No picture in EE-function. (with circuit diagram extract)
  • No REW.
  • The display is dark, everything else works correctly. (picture attached)
  • Drive does not function. Switches off immediately.
  • Intermittently sticks during load or eject.
  • Reel table does not turn, could be intermittent.
  • The appliance does not lace up completely and switches to stop immediately. (with circuit diagram extract)
  • Mechanism moves jerkily to and fro at cassette loading and ejecting.
  • No cassettes accepted. F1 is displayed.
  • After introducing video tape, ATTS mode does not switch on.
  • Not loading properly. Misses half-load position and ejects after one attempt.
  • Picture changes between brightness and darkness. Bright lines run horizontally across the screen.
  • Function fault/drive function is distorted.
  • Cassette flap has come off causing drive to go out of sync (after inserting a defective cassette).
  • Tape loops and loud noises without any obvious reason.
  • Defective PSU. Brake solenoid rattles for approx 30 secs. then PSU stops oscillating.
  • The appliance accepts the cassette and laces up. Does not initialise and no longer unlaces. F1 displays the faults.
  • Drive is blocked after the cam gear slips.
  • Brief chirp when plugging into the mains, otherwise no function. (service info for PANASONIC -NVH75)
  • The capstan does not start or runs jerkily. (part of circuit diagram displayed)
  • Intermittently switches off during REC and PB.
  • Picture impairment in slow and pause mode.
  • Laces up too slowly, front loading is also too slow.
  • Head amp frequency response adjustment procedure - Luminance, chrominance and head amp section. (extract of circuit diagram attached)
  • Intermittently no colour or no colour during own recordings or PB or pre-recordings. (NVH75 PANASONIC repair tip)
  • Appliance locks and does not start up. Once accepted, cassette is not ejected any more. (NVH75 tip from PANASONIC)
  • when the appliance has been disconnected from the mains for a long time the power supply unit does not oscillate any more.
  • Station search finds a station but does not store it. (extract of circuit diagram attached)
  • Sometimes does not load cassette correctly and blocks.
  • No EE picture during recording. During playback the appliance runs too fast an jerkily and the picture is also missing. (extract of circuit diagram attached)
  • Intermittently deck gets stuck during loading or ejecting.
  • Does not accept the cassette. Switches off and occasionally refuses all functions.
  • The tuner/line/signal switch does not function. (part of circuit diagram displayed)
  • Capstan will not start. Neither during play, nor winding. (with circuit diagram extract)
  • Picture shakes, no colour, interference stripes, HiFi sound fails.
  • Error code F1. Cassette compartment does not lower fully during loading and Help does not function.
  • Black horizontal lines on white background during PB. (+ extract of circuit diagram)
  • No sound present during any of the operation modes (via HF and Audio Out). (+ extract of circuit diagram)
  • FM detection transformer adjustment procedure - Decoder section.
  • Tape stuck (intermittently).
  • Does not go into play function. (+ extract of circuit diagram)
  • When switched off, capstan shaft rattles and head drum moves jerkily. When switched on cassette is loaded and laced in, but head drum moves jerkily.
  • Picture falls over in PB. Video head drum runs irregularly or too slowly.
  • During HF connection the channel K36 moves slightly. The picture is blurred or occasionally without colour.
  • The mechanism is stuck and cannot be moved manually although the gears are positioned correctly.
  • Tape damage when switching from REW to Eject or from Stop to Eject.
  • After approx 1h in PB mode, the capstan motor increases its speed and blocks the controls.
  • Defective storage rechargeable battery.
  • PB chroma cyan level adjustment procedure - Luminance, chrominance and head amp section. (picture attached)
  • The appliance sometimes pulls the cassette compartment back a bit and then laces up automatically. The capstan motor or reel motor runs fast, the display does not light up.
  • Tape is immediately taken back after eject. If no tape, display shows "F1".
  • Drum motor speed changing.
  • Ragged edges break off.
  • Mechanical fault, F1 is displayed. (PANASONIC - NVH75 information)
  • Cassette jammed in appliance (had not been inserted correctly). Keeps trying to take in cassette.
  • The appliance does not accept the cassette. The slope of the clock pulse is not steep. (extract of circuit diagram attached)
  • PSU is dead.
  • The test picture generator does not function.
  • Erratic functions.
  • Intermittent E-E.
  • Cassette is inserted, appliance displays F1 after a short period. Then it does not accept any more commands and the cassette has to be removed manually.
  • At switch on head drum runs, in PB the drive functions but drags.
  • The appliance laces up and then unlaces
  • Video tape is torn out of the cassette when rewinding at the end of the cassette. (extract of circuit diagram attached)
  • No operation.
  • Noise in rewind of E240 tapes.
  • Tracking fix adjustment procedure - Servo section. (part of circuit diagram displayed)
  • No FF. No eject. (NVH75 PANASONIC repair tip)
  • The mechanism rattles, sometimes F1 is displayed, the lifting solenoid has switched, but the lever mechanism is stuck.
  • FM audio REC current adjustment. (NVH75 PANASONIC repair tip)
  • No reception after a power supply repair. Search runs through.
  • Appliance only laces in one quarter then F1 is displayed.
  • No PB. No eject.
  • Occasionally appliance shows F1. Initialization operation is incorrectly carried out, measures tape time incorrectly.
  • Level meter sensitivity and balance adjustment procedure - Audio section.
  • On HiFi playback the left hand channel does not work. (extract of circuit diagram attached)
  • Occasionally tape loop remains hanging out of cassette when ejecting a cassette.
  • No tracking adjustment possible. No audio. No sync.
  • Chroma delay adjustment.
  • Appliance laces up then either switches off or gets stuck.
  • Sometimes no PB sound neither on Hi-Fi or longtrack. (picture attached)
  • F1 fault. After removing and refitting the compartment everything is ok for only a short time.
  • No function. Hums and humming gets slower. Rings as if it were operated without load.
  • Does not recognise E-240 cassettes in ATTS operation or recognises them as E-60 cassettes.
  • No loading in PB. Drum runs for 5 secs then stops. FF/REW and eject ok.
  • Display is bright in standby mode, becomes dark when switched on.
  • If cassette is not removed immediately after Eject, cassette is retracted again, else drive mechanism functions faultlessly. If there is no cassette in compartment, error code F1 is indicated.
  • With EJECT the tape continually goes in and out. IC208 in the power supply becomes hot. (NVH75 tip from PANASONIC)
  • Loads tape then ejects immediately.
  • Blows fuse in secondary, placed vertically on PSU. Only "DIGITAL" on display.
  • Power supply defective. (PANASONIC - NVH75 information)
  • Left reel does not turn.

With this service information, you may repair PANASONIC NVH75 faster/better when it fails.

When PANASONIC NVH75 fails , these symptoms are known and EURAS knows the remedy/solution.

Tips are coming from EURAS customers, workshops and payed technicians from all over the world. PANASONIC NVH75 fails can be better solved.

If PANASONIC NVH75 fails, this information will help you. Here you can only see the symptom list, to access remedies, you must register.

With help of this list a solution is found often when PANASONIC NVH75 fails.


Additionally to repairtips or service information NVH75 is linked to 56 components (IC's and/or transformers) in the Tectra database, through which you can identify electrical compatibilities (crossreferences) in appliances.


For NVH75 there are 35 compatible appliances known and can be listed.


In the repair discussion pinboard for NVH75 there are 10 replies to questions asked about 1 different repair problems.
With access to EURAS you can all read them or enter your own questions and get help for NVH75 from EURAS technicians or other users.

Do you want to see this remedies/cures for repairtips?   Register here for the EURAS System
Please note: access to the EURAS System can be granted only to professional household electronics repair shops/TV/technicians/Video which are authorized for service by a manufacturer, or can prove to be professionally certified to do repairs on electronic appliances. You will be asked for a statement and information accordingly during registration.

If you do not qualify as stated above and you have an appliance that needs technical service, we do recommend you to contact the manufacturer (for example through his website) or go to a professional household/Video/TV electronics repair shop close to you.

Already registered? open NVH75 PANASONIC in EURAS

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Last updated: 07. Jan 2009 21:31:39 MET, doccode ISO9002AS168EKA200805C EURASMOP

Responsible for the content: EURAS International GmbH, Eime, Germany.
All brand- or productnames are copyrighted by the respective manufacturer of the appliance and are only being used for identification purposes.