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Sony Repair Tips




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Search: sony
Results: 20072
Make Model Symptom Problem Solution By
SONY KV2070
Turning off Change 10k smd in overvoltage protection circuit r533 and d548
SONY MHC-RG66T
Cd radio deck inoperative R951 1r open
SONY BA-5D
BA-5D 		Image flickers at the top of the screen or is distorted. in the center down normal. It's as if the timing at the top was almost floating, twisting towards the right side, trying to give a headwind Retire o capacitor c582 de 1mf do pino 35 do ic301.
SONY BA-5D
BA-5D 		Buzzing with the volume turned down Earth deficiency in pci gk. this only in gk with suffix 13 Remove jumper jw16, remove jumper jw651 and add a jumper with a wire from the negative of c651 to the negative of c618 and to pin 2 of the cn1601 connector. This only applies to the GK plate with sμFfix 13, those with sμFfix 21 do not have this defect.
SONY AA-2W
AA-2W 		Distorted image at the top, like wind or as if tsound were scratches at the top, as a sign of noise. the image in the middle is like a gear tooth, shaky. normal sound Clean the contacts wsound the pp cable enters, that is, the female connector of the pp tuner with caool and the male of the cable as well. check the projection on the back cover wsound the pp cable passes, make sure it is not crushing or breaking the cable. If necessary, break the projection.
SONY KV-1439B/2159B/1440B -2160B
Vertical synchronism instability. the image scrolls or just shakes Eliminate q311, r315, r329, r330, r331, c329. short the r315 and c329 on the main board with a 5mm wire.
SONY BA-3B
BA-3B 		I'm sound Disconnect pin 46 on the computer, see if it works again. add a 12v zener between r040 (negative side) and the positive side of the zener to r268, all on pin 46. to prevent the audio IC from burning you can place a zener diode in place of the jw110 jumper, with the cathode facing towards the audio ci251 (tda2009). If tsound is no result when adding the zener to the PC, replace the PC or eliminate the SMD muting transistor to see if the sound returns. (except that the muting would be lost when changing channels).
SONY BA-3B
BA-3B 		Turns off by itself, volume and channel switching do not work, or it could be one of these isolated defects Change the cf001 crystal. ( attention The 2sc4834 transistor is irreplaceable, insert original. 2sc4034 is not compatible, it is printed wrong on the schematic).
SONY KV-2158B/62/63S/KV-1441B
Loud noises, in quieter places you can hear even more Place a covered wire between the ground terminal of resistor r505 and the positive terminal of c515. the wire must be close to the plate, do not pass over the plastic support.
SONY KV-2162/63S
If the customer complains that the TV does not have good image quality, with a lot of grain appearing, do this Change the c379/380/381 values ​​from 560pf to 270pf. If it doesn't work, remove the 680pf c382. these chapters. are located on the ic351 terminals.
SONY KV-2162/63S/KV-2158B
To prevent q551 from burning Replace the 4.7k r555 with a 6.8k/2w one, even if you didn't change the same tsh q551.
SONY KV-2162/63S/KV-2158B/KV-1441B
After a few minutes of operation the TV loses its brightness Connect a bus generator and select white standard (75%) and adjust the rv353 to obtain 50+/-10mv at TP48 on board “a”. Leave the TV on for about 30 minutes. If you don't have a generator, do the following Tune in to a station and wait for the screen to darken. turn the rv353 to the left until the image returns to normal.
SONY KV-2959
Burns the power supply oscillator transistors Check if this TV has a jumper in place of the r662, if so, remove it and place a 10r-1/6w resistor to dampen the starting current.
SONY KV-29V55/34V55
Vertical instability. At some point, the customer may complain that the TV has a crumpled vertical display, the image may shake, jump, or not stop running Eliminate r335 and eliminate and short r343. only on TV that presents these anomalies.
SONY KV-2970T/3954T
Lack of vertical height See r563 changing +/- to 3.0Ω it changes the vertical, even increasing the adjustment.
SONY KV-29T75/T80
Tinnitus Distance c507 from d501 from the main “a” board. remove the coil l501 from plate “a” and replace it after gluing it with quick glue. It is similar to the fly buzzing.
SONY KV-29V55/34V55
Mat leakage and charring of the print track leaving pin 8 or 10 of the fly t501 Remove the r550/551 and place a 0.5mm jumper with wire. remove the c550 (0.068mf/200v) and place it in position c510 next to the fly.
SONY KV-29XTR20
Does not tune the channels Broken solder on inductor l101.
SONY KV-34/38FV15B
The left side of the screen is darker than the right side Remove the L504 coil (100mH inductor) from the PCI and change its face, that is, change its position by 180 degrees. jumper jw938 put a 1m resistor. the c976 of 2700pf put another of 820pf. 12k r974 put 4.7k (smd).
SONY KV-36XBR800
Purity failure in 220v network Replace the 2.2mf/50v c6809 for a 47mf/50v one. Leave the TV off for 30 minutes, then turn it on and see if the stains are gone, if not, follow the procedure mentioned above.