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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
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 Exchange 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.
SONY KV-36XBR800
Smudged screen in 220v area If demagnetizing doesn't work, do this. There is a small plate directly underneath the TRC, well, disconnect the CN6805 connector with the TV unplugged. Turn on the TV to see if there are any stains. Now turn off the TV and reconnect the connector. (This procedure cannot be repeated more than once).
SONY KV-38FV15B
Remaining spot when turning off the TV Change the c1794 of the 4.7mf/250v “c” board to a 22mf/250v one (trc board).
SONY KV-9AD10
Fabric stain Demagnetize the trc. This TV does not have an automatic degausser.
SONY KV-25FV10B/KV-29-34-38FV15B
Image without color (main screen and pip screen) In the first model, change the c320 without measuring. in others, replace the c309. on the pip board swap c3366.
SONY KV-29FS100/FV300/34FS100/FV250/38FV250
TV with no image, normal sound, or does not turn on and stays on stand-by Change the ic702 of the trc board, check the r553. see the inductor l701, if it is 100micro beauty, if it is 68micro, replace it with 100.
SONY KV-29FS100
The positions of capacitors c514 and c554 were purposely swapped. the c554 in place of the c514, that is, in place of the 680n/250v the 2n7/1600v was placed and vice versa. Let's be alert with TV that comes from another workshop. In this case, it triggered the overcurrent protection.
SONY KV 2158B
Image with color full of interference, in some channels it is colorless. This also happens in the AV, thus ruling out problems in the varicap or rf or cag. The defect appears to be a tuning defect but it also happens on the AV. YCM351 ceramic filter that separates the video from the defective chroma.
SONY LINHA KV
On the screen, right on the characters' faces, I noticed some thin stripes like shutters, well separated from each other, as if there were small waves on the screen and only in the high channels, low channels, uhf and normal av Change the ci cxa jungle from rgb. it also usually gives the defect of blue stripes at the top of the screen, replace the ci.
SONY KV32S10
Relay clicks continuously at switch on Replace flyback
SONY KVM2511 AE1
Can not switch on the set, supply ok Suspect l807 of o/c pt no. 140750400 also check r008 and c017