TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	CFS400	Motor	The above unit needs the motor. kc sents a sub which wasphysically bigger and rotates on different direction. we reorder the parton a different number (a-3133-251-a), still received different motor.
SONY	SL100	Unit shuts down	When reel is turned by hand with original part waveform wasintermittent. with four new pc-101 -hq comments: after replacing the pc101 (sp1201-22) on the rd-21 board,we have found no problem. i have found that the painted white dotindicate pin 1 of pc1
SONY	KV25XBR	No power	Replaced q1524, all waveforms looked normal. -hq comments: q1524 is pin drive transistor.
SONY	KV2783R	Pop in sound at speakers/empty channels, see fpr h1195	Pop in sound at speakers when going thru empty channels ormomentary flash on screen.
SONY	KV2780R	Remote inoperative, replace ic-001 detector on "t2" board	Unit would work with all manual controls. remote was inopera-tive. found no sircs coming into microprocessor.
SONY	SL2410	Intermittent audio	These units had an intermittent no audio problem. the ta-16board had a broken shield ground connection. the shield is used as aground jumper and the solder connection between the board and this shieldwas broken. the broken connection occurred at the j
SONY	KV25XBR	These units had a vertical jitter on a satellite antenna	When using these units on the satellite, they had a verticaljitter. i received four calls this week for this problem. three werekv-25xbr
SONY	CFM100	Wrong p/n for battery lid	P/n a-3245-014a crosses to 1-562-582-12, 22-pin connectorsocket for ccd-v8. -hq comments: the correct p/n are x-3321-608-1 (silver) and x-3321-609-1(red).
SONY	STRAV340	No audio output	Power amp ic (p/n 8-749-900-24) was blown. loose groundconnection on main board probably caused power amp to blow. the screwswere stripped.
SONY	CCDV3	Stays in stand-by	Unit stays in standby even push rec start button.
SONY	CCDV8AFU	Scratching of tape	White line appears about 1/6 down from top of screen whenplaying pre-recorded tape. problem did not show up until tape was rewoundand played back again. unit was scratching tape on exit side of drumdue to the fact that guide #5 was not spinning. upon
SONY	CCDV110	Intermittent time/date display	Display only two dots on time/date display.
SONY	EVA300U	Tape transport inoperative	Tape transport functions inoperative. mode and load controlmotors and switches check good with checker box. could not get an outputcommand from microprocessor to run these motors even though the inputs tocpu check good. i found that every other functi
SONY	CDP302II	Bu-1 - fractured plastic mounts	All bu-1 blocks received are received in sealed boxes, butwhen the boxes are opened for installation of the part, it is discoveredthat two or more of the plastic legs are broken. also, some bu-1suffer severe main chassis fractures. i have been using bu
SONY	CCDV110	No rf output	No rf out of rfu80 connector to tv. video and audio outputare functioning. no b+ to rf connector present.
SONY	CCDV110	Dead set	Unit came in dead. replace f381 connect all cables andharnesses. unit comes on but no camera video. playback deck works fine.
SONY	CCDV8	Red line appears	Red line appearing from middle left side to center of screen.verified that it was a camera problem. appeared during e-e and playbackviewing.
SONY	SLHF550	Vertical jitter and rolling on copy guarded tapes	Vertical jumping and jitter when playing back prerecordedtape. -hq comments: problem is that copy guard changes the duty cycle of thetiming pulses in the vertical interval. certain tvs and monitors are moreaffected than others. older sets are more tol
SONY	EVS700U	W2n	Tried adj. 5-2-3 (tracking adj.) on pg 241 but had no effecton pix quality. also could not obtain waveform as shown. -hq comments: the tracking adjustment affects the dc bias of the 16khzand 46khz signals derived from the four atf pilots. adjust for m
SONY	KPR4110	Erratic operation at turn on,replaced power supply	Turn set on and rgb, video #3, sap, aux ??? comes on with nosound or picture, will turn on by remote but not manually.