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Sony Repair Tips




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Search: sony
Results: 20072
Make Model Symptom Problem Solution By
SONY KV1722
Set fails after a few days, replaced r569 Intermittently this unit would fail after servicing for astart circuit problem anywhere from one week to two months later. theunit had been in 7 times in the last 6 months. after running for aconsiderable time under a heat lamp the voltage at the colle
SONY KV1207
Poor vertical Vc amp leaky. repaired by replacement q101, 2sc1815 withreplacement 2sc1364. unit was ok for 6 weeks, then q101 failed again insame way. replaced and checked circuit. found no reason for failure.perhaps static problem. enclosed you will find the ori
SONY KP5040
Test signal interference, install cap Cross hatch bleed through on kp-5040. bar pattern when view-ing a weak incoming active channel. this condition sometimes can be moreeasily observed by setting the tv line switch s907 to the line position.in this configuration a faint bar can be seen ru
SONY KP5040
Picture distortion (oscillation), add cap Oscillation (snivet) down center of screen noticed on set inclose proximity. also had white horizontal lines similar to ignitionnoise.
SONY KP5040
Color distortion, replaced ic3301 and crt Red very weak, unable to set gray scale. bias wrong onpicture tube. changed ic3301 corrected bias, but red picture tube bad,had to change it too.
SONY KP5020
Incorrect convergence All three colors would not center properly. found d5501shorted on da board. also schematic is labelled wrong, voltage afterresistor r5597 should read +5 volts but schematic indicates +12vdc onda board.
SONY KX2501
No color, replaced ic1302 No color under any input, faint retrace lines in black andwhite picture. sometimes flickering of colored snow but out of colorsync.
SONY KV9000
Tv would not come on Tv would not always come on. found c508 intermittently open.
SONY KV2648R
Color confetti on b/w, adj cv301 Color confetti on b/w telecast.
SONY KV2648R
No picture, replaced f601, q602 and q603 This unit keeps on blowing f601 and q602. isolated problemon the f board by disconnecting the 135v b+ and supplying a separateexternal b+ (tp92 was the ground return) to the a board. this makes thea board work. hv normal but no raster. then by using
SONY KV2648R
No manual operation, replace c4038 You cannot turn set on or off by manual button. set wouldwork ok with remote. i found no logic high at pin 33, ic4001. capacitorc4038 was shorted on mz board.
SONY KV2648R
Bottom of screen blank out, replaced cx841 Bottom and left side area of the screen blanked out. foundcx841 defective.
SONY KV2647R
Black line on the screen, replace v out ic502 After set would warm up a black line about 3/8 inch (veryfaint) would appear in the center of screen.
SONY KV2647R
No operation, h out q-502 No sound, no picture. found horizontal output shorted.
SONY KV2643R
Vertical bars on the screen, replaced c539 Vertical bars on left side of screen. almost like ringing.horizontal spike riding on b+.
SONY KV2602
Vertical jitter, replaced c511 After 5 to 10 minutes on, vertical jitter is noticed andbecomes increasingly severe. sometimes a brighter line is apparent acrosscenter of screen (slight folding). found c511 2.2ufd at 20v tantalumcapacitor very slightly leaky (100k).
SONY KV1943R
Intermittent sound, replaced t207 Sound intermittently goes dead. troubleshooting indicates that the sound is not passing through the if section. isolated problem to t207.
SONY KV1923
Picture noise Retrace line.
SONY KV1923
Dead Dead set. found defective the following parts f602, q901,d514, d502. after replacing defective parts it was found r560 and r561were getting hot. traced cause to an open contact between circuit boardand l502 the hlc coil.
SONY KV1914
No uhf No uhf. found b-e of q103 shorted.