TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	XR7000	No ams function or audio output	No ams. no auto reverse. pm1 and q801 were both fried.
SONY	ESR11	Error in manual	This trans will not work. manual should read p/n 729-177-43. -hq comments: you are correct the type description in the schematic isincorrect as well as the part number in the parts list. the correctnumber is 8-729-177-43 for a 2sd774.
SONY	STRAV550	Dead unit	No oscillator ic351 found 5.5v on base of q803. q803 notturned on so no reset.
SONY	CDPC50	Mounting of loading gear	The screw and collar do not provide enough support allowingthe gear to lean forward (pivot) preventing the focus block from cyclingcompletely and jamming the tray.
SONY	KV27SXR10	Pop in r-channel speaker when unit is powered down, r-844	When the unit is turned off, a single pop resulted in rightchannel speaker only.
SONY	KPR36XBR	Distorted stereo sound, replaced ic-8810	Unit had distorted, low level audio in stereo mode. noneperformed normal.
SONY	KPR36XBR	Intermittent video, replaced d-5015	Several units display same problem, found d-5015 was opening.
SONY	CDP110	Unit may not focus or may not track	Unit may not focus or may not track. power up unit andvisually view lens. if lens is off center or does not seem to have fullfocus travel, the problem is ic-2. when this condition occurs, it wouldbe normal to suspect the driver amps (ic6 and ic7). ho
SONY	DT4	Unit would not play intermittently; makes chattering noise	Unit would intermittently chatter which sounded like lensfocusing. replaced optical to no avail. found rack was binding and wouldcause gear to slip a tooth.
SONY	KV27HFR	Shutdown when using vcr, resolder c-660	Set was hooked to zenith vcr. set would operate fine until avcr function was initiated, then set would shutdown. set would work okwith other manufactured vcr.
SONY	KV2729R	Loss of horizontal sync, replace r-512 on a board	After warm-up, set would lose horizontal sync. found resistorr512 changing value when cold would read 300k after warm-up, increased to450k.
SONY	CDPC10	Dead unit; port expander ic212	Unit was inoperative when cartridge inserted. m-2 did notoperate. found no data on pins 17, 18, 19. lifted these pins and datawas being supplied.
SONY	D4	No part number for headphone pcb	Part number missing for h/p jack pcb. this commonly breaks.part number on this small pcb is 1-625-769-11. is this valid? if so,please stock kc as this problem is common. -hq comments: we just received a part number for this pcb from tokyo.the part nu
SONY	SPP80	No ring	Unit would not ring on incoming calls.
SONY	GENERAL	Ic removal jig (solder iron tip)	Is there an ic removal tip which fits ics cxa1081 (30 pin) andcx20157 (24 pin)? if so, i need part numbers for them. -hq comments: the tips that we have available are listed in generals/b no. 11. none of these fit these particle ics well. however, ot
SONY	CDPC50	Drawer would not open completely	Drawer would not open completely and was sluggish. foundrunner grove of table had upset about 2/3 to rear. this upset caused drawer to hang up.
SONY	EVC8U	Camera recognition and tally operation	1) how does the ev-c8u know when a camera is connected?2) is the tally output at camera connector cn807 pin 9 active whenconnecting a line input via the multipin connector? -hq comments: 1) via the serial control bus at camera connector cn807pin 7. 2)
SONY	SLHF300	Unit will not memorise programmed channels	Unit will not memorise programmed channels when the ss-32board is replaced.
SONY	D170	No audio	No audio, with no -5v to d/a converter. i have seen thisthree or four times.
SONY	XR170	Switches from am to fm/am or fm cuts out intermittently	Cmc distributing has several units with fm cutting out andswitching to am. it was found that the main circuit board mounting screwswere loose. the one mounting screw that is located at the left front whenthe unit is upsidedown is the one that is causin