Sony Repair Tips
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Results: 20073
Results: 20073
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| SONY |
KP46XBR25
Projectio n |
Convergence | Unit has an intermittent ""out of convergence"" picture. but now the unit is completely dead. "" | Tech needs to replace the q603, q614, r604, d605, both convergence ic's. d605 is shorted. | Muller |
| SONY |
KV2084
P3 |
System control | Sony kv2084 will not memorize any channels. tech ordered the cpu and memory ic. | I asked tech to check the negative supply voltage to ic103 memory ic on 10, it should be -29 vdc before replacing the cpu and memory ic. cpu was not needed. verified the presence of the supply voltages at the memory chip. the memory chip was defective. | Muller |
| SONY |
KV27TS27
LN-1 |
Red raster | Sony kv27ts27 ln-1 chassis predominately red picture. | When shorting out the rgb cathodes on the crt the set will get a perfect black and white picture but shorting out the rgb inputs on the crt board the set is missing green. trouble is a defective green output transistor. | Muller |
| SONY |
KV32XBR50
LN1 |
Horizontal | Kv32xbr50 unit has sever horizontal overscan. measuring q505(c ) the voltage was near ""0"" volts. tech changed q501 but the transistor shorted in less than 5 seconds. "" | It was discovered that the q505 was shorting collector to emitter. also r571 was also showing signs of overheating. it was suggested that l501 & r571 be replace with a new q505. the set now runs correctly. | Muller |
| SONY |
KV32TS27
LN1 |
Audio | Kv32ts27 7039676 unit has an intermittent squeal in the audio when trine to receive a stereo broadcast. | Tech needs to replace the audio ic sbx1627-11 | Muller |
| SONY |
KV32XBR36
FN |
Vertical | Kv32xbr36 unit has a slow compressing and decompressing of the vertical sweep. | Q605 was not soldered well | Muller |
| SONY |
KV27XBR10
FN |
Tuning | Unit has aft drifting as soon as the channel is addressed. it never stops the aft search. | Unit needs to have the if/demodulator module removed from it's shielded compartment and resolder all the adjustable tuning transformers. the afc coil/transformer has ring fractures around the pins that protrude through the | Muller |
| SONY |
KV32XBR76
FN |
Poor color | Kv32xbr76. unit has poor color registration but color bars appear near normal. but when cross hair pattern is put up on the screen there are no blue vertical line. there are red and green vertical line | This symptom is a result of a high frequency loss. the ability for the amplifiers in the b drive to turn on an off rapidly is a direct result of how high the bandwidth is. in this case the three outputs of the jungle ic301(20,22,&23) had the typical signal when viewed on an oscilloscope. all three outputs had the same vertical spike in the center of the horizontal line on the oscilloscope scope. waveform showing the cross hair | Muller |
| SONY |
KV32XBR76
FN |
No high voltage | Kv32xbr76 unit will not turn on no high voltage. measuring the condition of the d1409 is shorted. | The problem is caused by d1409 on the a board shorting. problem caused by an intermittent b+ regulator on the g board, ic651, 1-809-524-11. replacement resolves problem. we have seen a number of these units lately with d1409 shorted. often it is simply ring cracks on ic651 causing the problem. this unit did have a loose solder connection on ic651(1) but it did not drop the voltage down enough across d1409. the voltage was always 36.6 volts across a 36 volt | Muller |
| SONY |
KV32XBR96
FN |
Horizontal sweep | Kv32xbr95s unit has an extremely wide picture. | I had tech look at q501(e) the voltage should be about 16 volts. this is the pin modulator input for pincushion correction. in this tv it was 2 volts. a resistance check finds theΩ value to be under 10Ω. tech needs to check | Muller |
| SONY |
KV32XBR36
FN |
Dead | Kv32xbr36 unit will not power on. monitoring the 17 vdc stand by supply we find the voltage running at 4.6 volts | One of the primary filters on the 17 vdc standby supply c662 a 220mfd @ 35vdc was open. | Muller |
| SONY |
KV32XBR96
FN |
Dead | Kv32xbr96. unit is dead and has no vertical sweep. | R623 and vdr 602 burned up. tech needs 8.2Ω resistor to replace. tech does not have 8.2Ω in his stock. however he can make an 8.2Ω by paralleling a 10 and 47Ω resistor. this will create a 8.24Ω resistor. c531 vented is connected to r881. | Muller |
| SONY |
KV32XBR76
FN |
Dead | Unit will not turn on. no high voltage. measuring the condition, d1409 is shorted. | The problem is caused by d1409 on the a board shorting. problem caused by an intermittent b+ regulator on the g board, ic651, 1-809-524-11. replacement resolves problem. we have seen a number of these units lately with d1409 shorted. often it is simply ring cracks on ic651 causing the problem. this unit did have a loose solder connection on ic651(1) but it did not drop the voltage down enough across d1409. the voltage was always 36.6 volts across a 36 volt | Muller |
| SONY |
KV32XBR36
FN |
Dead | Unit will not power on. monitoring the 17 vdc stand by supply we find the voltage running at 4.6 volts. | One of the primary filters on the 17 vdc standby supply c662 a 220mfd @ 35vdc was open. | Muller |
| SONY |
KV27XBR10
FN |
Aft | Kv27xbr10. serial 7009564. unit has aft drifting as soon as the channel is addressed. it never stops the aft search | Unit needs to have the if/demodulator module removed from it's shielded compartment and resolder all the adjustable tuning transformers. the afc coil/transformer has ring fractures around the pins that protrude through the | Muller |
| SONY |
KV32XBR100
DA1 |
Retrace lines | Kv32xbr100 unit has a bright screen with retrace lines | The 200 vdc line at the crt is only running at 144 vdc on all cathodes. unit has an open diode on flyback transformer for the 200 vdc power supply | Muller |
| SONY |
KV32XBR100
DA1 |
Raster | Unit will not get raster even if the g2 is raised all the way up. we still don't get a bright screen with retrace lines. tech requesting the feature box. this will be a waste of time because the feature box is not necessary | R554 was open | Muller |
| SONY |
KV9PT50
BN1 |
Sys con | Sony kv9pt50 serial unit does not respond with the remote or keyboard. in fact when the keyboard is activated the volume goes low and any other key causes the set to either turn off or change channels | Shorted c009 on pin ic100 | Muller |
| SONY |
KV20FV10
BA4 |
Vertical line | Customer claims the set develops a symptom of a black vertical line in the center of the screen. it is spreads rapidly across the screen until there is no raster. afterwards there is still sound but no on screen display or raster. customer claims the led in front does not flash. | Taking a conservative approach to this repair the tech needs to enter the tech menu and reset the vss parameter from 0 to 1 and the cdmd from 0 to 3. this will cause intermittent loss of raster. there are no error codes listed in the tech menu. tech will need to check back in two days an see if the symptom shows up again. | Muller |
| SONY |
KV27V42
BA4 |
System control | Kv27v42 serial 8028220. when this television is on channel 2 the raster will go out. changing the channel the raster returns. going back to channel 2 the raster disappears again. led in front flashes when the ""no raster"" symptom is present. "" | Tech needs to enter the tech menu and adjust the cdmd parameter from ""0"" to ""3"". "" | Muller |