Dicas Reparação
Modelo - Chassis KV25XBR
Pesquisa: KV25XBR Enviar Dica Resolvida
Resultados 95
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV25XBR | STEREO LIGHT BLINKING | Stereo light indicator blinks even when receiving nonstereochannels. | ||
| Sony | KV25XBR | SLEEP LIGHT ON, HIGH VOLTAGE ON, NOTHING ELSE | Unit turned on, sleep light comes on, Hi voltage comes on,no raster, no sound, no functions. Found vertical pulse missing onPin 4, IC103 on A board. Traced problem to Q127, base had vertical,nothing on collector. Transistor was opened. | ||
| Sony | KV25XBR | NO RASTER - NO REMOTE CONTROL FUNCTION - SLEEP LIGHT ON | No raster - no remote control function - sleep light on.First checked for raster by turning screen control up, raster was visible,checked voltages at A-13 5V was low, checked Q251 OK checked Q251 leaky. | ||
| Sony | KV25XBR | SET COULD BE TURNED ON/OFF, NO OTHER FUNCTIONS | Set could be turned on or off, no other functions. RGB lightalways on. I found no vertical pulse present in order to system controlto function. Inspection revealed no pulse coming out of IC501, Pin 12.DC voltage at Pin 13 was 0. Cause of problem was | ||
| Sony | KV25XBR | BUTTON PART NUMBERS MISSING | The part numbers for the AUX/ANT and the cable ON/OFF switchbuttons are not in the manual. The two above mentioned buttons are notpart of the switches and do not come with the assembly #63P/N 4-374-151-01. I need these two buttons (rush). -HQ COMMENTS | ||
| Sony | KV25XBR | HORIZ. OUTPUT SHORTS | The unit came in with a shorted horiz. output. A replacementtransistor shorted immediately. The flyback was tried with no success.We then ran the unit with only 55V on 140V line. This was accomplished bydisconnecting the control winding on T652/GA Bd | ||
| Sony | KV25XBR | ONLY CHANNEL UP SWITCH WOULD WORK | Only channel up switch would work. All other functions wereinoperative. | ||
| Sony | KV25XBR | TV SET TO LAST CHANNEL, NO CONTROL POSSIBLE. | When powered up, TV set to last channel, no control (local orremote) possible. Pix displays bar and word picture on screen, notcontrollable. | ||
| Sony | KV25XBR | DEAD | RGB and sleep light on, power up and would shut down. Usinglowered line voltage set would run. Looked at H. out and found ringingwaveform. Found one of damper diodes with very high leakage. | ||
| Sony | KV25XBR | POOR VERTICAL LOCKING | Good pix and sync with network broadcast, but with VCR output,poor vertical lock, intmt blanking of pix. Found reduced amplitude ofcomp. video at output of U board (U-10). Signal reduced by 1/3 between Band E of Q822 buffer, but Q822 OK. | ||
| Sony | KV25XBR | DEAD SET, REPLACED D655 | Set would not come on. No output from LV supply. | ||
| Sony | KV25XBR | SLOW TUNING | Set was slow to tune on antenna and CATV. Tuning would cycleas if searching for 4 or 5 times before locking on. Found loss of H syncto IC103. Jumpers were omitted from PCB during production. | ||
| Sony | KV25XBR | NO COLOR THE FIRST TWO MINUTES | Color only incorrect for the first two minutes set is poweredon. Monitor Pin 14 was high then drops to level selected after about twominutes. Every other function OK, also all level functions OK. | ||
| Sony | KV25XBR | NO PICTURE, SOUND. SCREEN DISPLAY INDICATED PICTURE | Screen was black. Remote inoperative, front panel controlsinoperative except for power on/off. Only thing that screen displayedpicture. | ||
| Sony | KV25XBR | PURITY CHANGES WITH SET DIRECTION | When set turned East, top right corner turns magenta, bottomright turns green. Also slight cyan ring present on entire face of tube. -HQ COMMENTS: Smaller pitch CRTs require narrower landing tolerances.Follow procesure: 1) face CRT EAST, turn set ON 2) |