sony KV27TS20 Repair Tips

Search: KV27TS20 sony

Results 21

Make	Model Ch.	Symptom	Problem Solution
Sony	KV27TS20	Intermittent video or snow	Resolder points A, B, C, D in tuner PCB, check cold solder on tuner shield 2-106-349-21
Sony	KV27TS20	DARK PICTURE, REPLACED D518 AND R587	Dark picture
Sony	KV27TS20	NO PICTURE NO SOUND, BLINKING SLEEP LIGHT	TV has no picture and sound, but sleep light keeps blinking.
Sony	KV27TS20	NO CHROMA, REPLACED LEAKY C508 OFF JUNGLE IC301 PIN 12	No color. Checked following: comb filter, pin 4 OK IC301-46OK changed X301, no help IC301-12, waveform OK, but DC voltage at 0.5instead of 3.2VDC C508 - 300 ohm leakage.
Sony	KV27TS20	UNIT WILL GO OFF STATION WHEN COLD, RESOLDERED IF BLOCK	Found APT transformer in IF block had ring cracks.
Sony	KV27TS20	AFTER TURNED ON, PIX STAYS IN BLANKING FOR 30 MIN, C574	At cold start, the IC 301 pin 34 high (5V). IC 101 pin 43 high(5V). D506 cathod low, D505 cathod high, IC 101 pin 51 OK (H puls), pin 50faulty. IC 501 pin 6 faulty.
Sony	KV27TS20	UNSTABLE PICTURE, REPLACED C-509	Picture appeared to have no horizontal sync. Picture did notroll but would occasionally fold over or shift side to side. H and Vinputs to the jungle IC-301, pins 48 and 47 were present. Technician atthe service center replaced the jungle but this did
Sony	KV27TS20	NO HIGH VOLTAGE, REPLACE IC-301	No high voltage, no horizontal pulse from pin No. 12 ofIC-301. Verified all B+ voltages present and checked for shorts on outputleg (both sides of C-508). All ok.
Sony	KV27TS20	SQUEALING, L-511	Set had intermittent high pitch squeal. Two yokes were re-placed the last having hot glue applied. Home tech found by moving L-511the squeal would come and go. Note: I have found out in four cases thatif their is a squeal after the yoke has been hot g
Sony	KV27TS20	BLOWS FUSE, REPLACE CRT	Upon turn on line fuse would blow. Could bring up to 80VAC.The horizontal waveform is ok. With AC up to 100VAC output would distort.Any higher fuse would blow. Disconnect C board and was able to bring upto 120VAC. Hookup chassis to another tube evert
Sony	KV27TS20	TV HAS GHOSTS ON STRONG LOCAL CHANNELS, SEE SB TVP0101	Ghosting occurring on strong local channels due to leakage inantenna circuit. Installation of new coupler supplied by TechnicalDepartment solved the problem. -HQ COMMENTS: Part number for this cable is 1-537-383-11.
Sony	KV27TS20	AFTER 1 TO 2 HOURS PICTURE PULLS IN FROM SIDES, C-550	After one to two hours, picture would pull in from the rightside at this time horizontal output would short taking out the flyback andthe power regulator chip. Found C-550 (coupling capacitor) opening up.Four volts P/P on one side, 1 volt P top on the o
Sony	KV27TS20	PINCUSHION DISTORITION, D-519	Pincushion distortion.
Sony	KV27TS20	SAP NOT WORKING, ALIGNMENT?	I was contacted by a customer because SAP didn't work on hisunit (we have weather on Channel 6, the PBS channel here). He went to thestore and the display model didn't work either. I went to another storeand the display didn't work on SAP either. -HQ
Sony	KV27TS20	VERTICAL FOLDOVER IN MIDDLE OF SCREEN, REPLACE R-543	Unit had foldover in middle of picture vertically. Drivewaveform and feedback waveforms were incorrect. R-543 changed value from27K Ohm to 35K Ohm. Resistor is in the feedback circuit.
Sony	KV27TS20	NO VIDEO, REPLACE COMB FILTER CM-301	Unit displayed no video, but had character displays. Hadsound - G2 normal.
Sony	KV27TS20	PICTURE BOWED IN ON SIDES, REPLACE C-566	Pin amp and phase control have no effect found open C-566. -HQ COMMENTS: C566/4.7uF 50V is located off D514/pin damper diode.
Sony	KV27TS20	SHUTDOWN, REPLACE YOKE AND R-578	Set in shutdown. R-578 dissipated, reading zero on the 27,12, and 9.3 volt lines.
Sony	KV27TS20	NO RASTER, REPLACE C-574	No raster - sleep light on and audio is muted. Turning upscreens raster showed retrace and foldover at top of screen. Sprayingvertical section raster would return but retrace still visible and fold-over still present.
Sony	KV27TS20	HIGH-PITCH SQUEAL, SEE SB TVP0114, 1-451-275-41	Intermittent squeal from yoke. -HQ COMMENTS: Please replace the yoke using P/N 1-451-275-41. This wascovered in Service Bulletin TVP0114.