Dicas Reparação
Modelo - Chassis KV27XBR15
Pesquisa: KV27XBR15 Enviar Dica Resolvida
Resultados 44
Pedir dica reparação
| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV27XBR15 ANU1 | dead | Sony KV27XBR15 ANU-1 chassis Unit is dead. Unit had all 3 regulators loose. All had ring fractures. Once resoldered the set still did not turn on because of a short to ground on the 135 vdc line. | Horizontal output is also shorted. ?This unit requires a modification to the horizontal output section KIT # T-998-56641. This Kit consists of a 2SC4927 and a .68 ohm resistor that must be used in the emitter of the horizontal output transistor. | Muller |
| Sony | KV27XBR15 | NO MAIN CHANNELS ONLY AUX ANT., REPLACED Q414 | When set is on and in TV mode the picture is snowy on allchannels. When switched to aux and signal supplied to the Aux. inputpicture is OK. Picture is only snowy in main antenna input mode. - SOLUTION: Replaced leakeage Q414. 3rd Antenna switch found vol | ||
| Sony | KV27XBR15 | NO PARENT PICTURE ONLY CHILD, REPLACED IC102 | No main (parent) picture, but child picture was OK. Youcould swap it to the child. Signal Y and Chroma was present atIC301/pins 3 & 5. Nothing coming out of IC301/pins 20,22, and 24 RGB.SOLUTION: Replaced IC102, Rom. | ||
| Sony | KV27XBR15 | HOR. OUTPUT FAILURE, SEE SB 161R1 | Dead Hor. Output Q-503 failed. | ||
| Sony | KV27XBR15 | NO OPERATION / REPLACE IC-101 (MICRO) | |||
| Sony | KV27XBR15 | STATIC, GROUND MEMORY AND MICRO PINS | Unit would power on, all functions would work except powerturn off. The set would blacken and come back on when power off waspressed. The Servicer had replaced the Micro and Memory. Shorting allthe pins on both chips corrected the problem. This was r | ||
| Sony | KV27XBR15 | AUDIO POPS WHEN POWER IS OFF, NO MUTE AT OFF TO VAR OR FIX | The unit has a 1v pp negative spike on the fixed and variableaudio output jacks when the power is switched off. Speaker out are mutedOK. He has checked 18v, 9v, and 5v power supplies as well as the data andclock bus. IC102 and IC444 have been changed. | ||
| Sony | KV27XBR15 | NO PICTURE - SQUEALS, REPLACED C-1208 ("F" BOARD) | Has no picture and squealed. Found no 9.3V. Found C-1208 de-fective, however, checks good on Z meter. | ||
| Sony | KV27XBR15 | PIP FUNCTION GOES TO V-2 WHEN CHANGING PICTURE MODE, IC-101 | Picture-in-picture function goes to video 2 when changing pic-ture mode. | ||
| Sony | KV27XBR15 | NO VIDEO OR AUDIO BUT HAS DISPLAY, EPLACED IC-301 | Set had high voltage, no video or audio but had display. Dis-play had funny characters, also displayed RGB. Traced problem to IC-301.Servicer also had replaced IC-101 controller. I don't know if it was de-fective or was shotgunned. | ||
| Sony | KV27XBR15 | NO PICTURE MIGHT HAVE DISTORTED SOUND, COLD SOLDER HDT | Unit was inoperable. Traced problem to cold solder connectionon HDT. | ||
| Sony | KV27XBR15 | DEAD, REPLACED FBT AND Q-503 | Set was inoperable. Replaced Q-503 which shorted and poweredup set and took Q-503 again. Traced problem to T-500 FBT defective. | ||
| Sony | KV27XBR15 | VERY WEAK VERTICAL SYNC, REPLACED Q-301 | Very weak vertical sync. | ||
| Sony | KV27XBR15 | DEAD, REPLACED Q-503 AND REPAIRED COLD SOLDER JOINTS | Unit was dead, found shorted H output transistor andcold solder joints on H. Drive transformer. | ||
| Sony | KV27XBR15 | HORIZONTAL CENTERING: SERVICE MANUAL PROCEDURE, TVP SB 102 | The horizontal centering adjustment on page 30 of the servicemanual omits the fact that a horizontal centering tap exists as shown onpage 36, the F board. If the remote commander adjustment is made withthe tap in the wrong place, some sets will exhibit |