TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	RM717	No channel 3 function	The conductive coating on the ch. 3 pad is worn off and thisfunction will not work. the remote works on all functions except thech. 3 button. bulletin should be produced on disassembly procedured onremotes and the fix for this problem.
SONY	RM724	Intermittent remote	No ch. up/down or volume down. conductive coating on pad isworn off on functions that will not work. this problem is becoming biggerand bigger. many remotes are being replaced. many shops do not know howto open these units so they never want to repai
SONY	CFS9000	Tracking noise in audio	When using the d-14 and the cfs-9000 on the same dc power supply,there is a noise in the audio that is equal to the tracking changes onthe d-14. the noise can be seen all over the d-14 including the ground,when the scope ground is connected to the dc supply g
SONY	SPP100	Insufficient range	Maximum range is 20 to 40 feet. checked base unit output -low. checked handset output - low. is there another procedure for txpower adj using a dvom or a scope? an rf power meter is not in every ssc.
SONY	SDP505ES	Will not function	Display erratic. no functions. display is cycling as if intest mode.
SONY	KV20XBR	No picture, 200v lead and one filament lead broken off	Servicer told me that he just repaired 3 sets with the 200vlead and one filament lead broken off right at the board (c board) connec-tion. it is possible that there may not be enough slack in the leadswhich could cause the problem.
SONY	XR780	No am or fm operation	No am or fm. dc voltage at emitter of q225 was 7.4vdc insteadof 8.8vdc. although the regulator transistor (q225) did not check open orshorted, it would not function in the set.
SONY	KPR4620	Upward bending - vertically up to 2 inches	Picture distortion-bending on top left edge of picture (verti-cally up to 2). produced only when playing back prerecorded tapes on rca(2 head) vcr deck. also the same identical problem is produced when usingsony evs-700u 8 mm video deck, but in the slo
SONY	HVC1000	P/n for lens assembly	No p/n in service manual. -hq comments: refer to page 4-4 of s/m. part no. 1-547-030-21(incorrectly listed as -12) is the chassis assy including lens. pleaseorder under this part no.
SONY	SLHFR30	Distorted audio, video on rf output only	Picture overload, bending, buzz in sound, only when using rfoutput. pix and sound ok at video output jack.
SONY	CCDV3	Tape path	Noise bar in picture and no vertical sync (rolls). foundentrance guide #3 loose causing tape path alignment to be off.
SONY	XR787R	Unit was stuck on 530 am	Unit was stuck on 530 am. clock worked when radio was turnedoff. no buttons would operate. tape also would only cycle thru theneject.
SONY	CDP25	Wow distorted audio	Distorted audio.
SONY	STRAV880	All display functions (lock up)	All display functions (lock up). no audio output. usuallyholds on cd function.
SONY	CCDV110	Power up only	Power up but no transport functions due to no drum rotation.
SONY	CCDV110	Zoom not working correctly	Zoom switch ran one direction only towards wide not telephoto.found b+ wired to one side of switch and not center.
SONY	CCDV110	Playback no y info and camera no zoom, no video	1) traced y info around vtr back to pin 2 of vy-8 board buthad no out at pin 21, traced to no info at pin 37 of ic0001 on vy-8 buthad info on c049 coupling cap. ic side of cap was soldered but not toland pc. 2) developed after repair of first problem.
SONY	KV2792R	No audio, resolder ic-813 pin 6	No sound.
SONY	CCDV3	No servo lock	Playback in slow-motion. unit starts in sp mode then switchesto lp mode even if sp tape is in unit. atf servo does not appear to locksince noise bars (float) thru picture. found no drum pg pulse presentfrom drum assy. ordered drum assy from kc parts
SONY	CCDV3	No camera record	No record from camera (no video output from camera). founddefective sh-2 circuit board in camera block. circuit board now on orderfrom kc parts center.