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Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SONYEBP9LC
Need part number for assyCustomer would like to purchase complete battery holder forthe ebp9lc. the service manual has it broken down into 16 items, can itbe ordered as a complete assy? -hq comments: when you want accessory part, you can use model name ofebp9lc. kcp stocks eb
SONYTCK5
Audio warbleThis is the same problem as reported on tc-k60. (reportdk-1-3). the lower bushing on the lever comes off, and the motor switchlever is allowed to come up against the reel and puts a flutter in theaudio.
SONYTCK60
Audio warbleOn both these units the lower bushing came off and allowedthe motor switch lever to ride up against the supply reel causingthe audio to have flutter in it.
SONYSTRAV360
Protection relay engages at -20db volume levelAs you increase vol. to -20db, unit goes into protection.
SONYCCDV8AFU
P/n for mi-2 cableService manual shows no p/n for mi-2 cable (pg 82 of s/m)which connects between the (ar-1) board (cn113) and (ma-13) board (cn406).please inform p/n. -hq comments: p/n is 1-935-008-13, but is not available from tokyo. asyou mentioned on the phone, you
SONYSLHF900
Replacement cassette door does not fitCass. doors in s/m. p/n x-3691-652-1 does not fit on cassetteassy. the gear on the door is too small. -hq comments: some units have larger gears and require a different door.please order under p/n x-3695-018-1. a service bulletin will be issued.
SONYCCDV110
IcIc801, 802, 803 on af-23 board have no p/ns in s/m. -hq comments: please refer to the ccd-v5 service manual, af board, forthe ic part numbers.
SONYKPR4110
"d" board complete, a-1340-692-aKc has boards for later production run, they have sixconnectors going to it. the one that is needed has 8 connectors goingto it. the chassis # is scc643aa april 1985. can this board beobtained? -hq comments: it has been found that the later productio
SONYSLHF500
Line fuse blows after one week of operationAc line fuse blows after about one week of use when rec isentered. tried replacing fuse and regulator ic, same problem happened.this is an employees unit. -hq comments: try replacing all surrounding components r1, c1 and t1.please inform of results.
SONYEVA80
Unit deadFound no initial power up for 4-5 seconds. clock displayonly. found that power coming up from ps-49 but no unit turn on forinitialization. found no osc. (x001) for ic001 on ft-8 board. ic001/23was 5.3v and ic001/24 was 0v.
SONYD14
Does not playFound in service mode that spindle would run free no sledmovement in either direction display ok/changing. found no -5.2v comingfrom dc/dc convertor.
SONYCCDV8AFU
Will not rewind or ffPinch press lever assy would not return to stop position afterbeing in playback mode. found e clip holding pinch press lever assywas in contact with the assy. the e clip was not in contact with assyon a known good unit.
SONYSLHF900
Unit eats tapesUnit loads tape, ff & rew ok. capstan speed too fast when inpb. will not stop or power down in pb. found ic501/28 (3.58mhz) was lowor missing (0.5vpp at times). traced back to vi-10 bd, found q401 basesignal good but emitter signal 0.5vpp. voltages
SONYKV1311CR
No vertical, replaced ic-501The unit would power up but there was no pix or sound. wefound the problem to be caused by ic-501. there was no vertical drive tothe vert. output ic. of course this did not permit the syscon ic tooperate correctly. replacement resolved the problem.
SONYCDXA10
Unit tries to load two discsThe customer complained that the unit would periodically jam.we found that one disc (david sanburn/voyeur/warner bros 3546-2) made bypolygram in west germany was causing the problem.
SONYSTRVX550
Unit will not turn onThe unit would not power up. we found ic403/p8 - remotedecoder to be low. this is the reset pin. this was caused by an openc824 on the main board. excessive ripple at ic402/p1 & 2 did not permitthe reset circuit to operate properly.
SONYTCFX1010
Unit will not power onThe unit would not power up. there were no key scan pulsesfrom ic703, although the clock was running, etc.
SONYSTRVX200
No functionsNo functions were operative. we found a solder splash acrossthe 16v regulator - q803. this caused d803 to short and r804 to open.
SONYSLHFR70
Distortion in beta hifiDistorted audio (bhi-fi), beginning of tape only.
SONYSL100
Will not accept tapeWill not accept tape.