Dicas Reparação
Modelo - Chassis KV2780R
Pesquisa: KV2780R Enviar Dica Resolvida
Resultados 15
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2780R | SNOWY PIC ON ALL HIGH CHANNELS, REPLACED Q1411/1412 ANT SW | Snowy picture all higher channels. | ||
| Sony | KV2780R | DEAD, REPLACED FLYBACK AND FUSE F602 | Dead | ||
| Sony | KV2780R | PICTURE DID NOT FILL SCREEN, REPLACED C1537 | I noticed the horizontal centering was off. The picturewas shifted five inches to the left side of the screen. The five incheson the right side did not have any raster. | ||
| Sony | KV2780R | "A" REPLACEMENT PCB NOT COMPATIBLE | Replacement PCB found with numerous errors. Has power but novideo, sound or micro operation. Sleep light will not turn off. Foundthese problems: A. IC-102 memory IC is not correct IC. B. R-104, JW-66,R-193, R-192, JW-107, JW-110 C-603, C-608, D-606, | ||
| Sony | KV2780R | NO PINCUSHION, REPLACE R-1514 | Unit had no pincushion correction. Collector of Q-1501 had DCbut, no waveshape. There was signal present at pin 3 of IC-1502 and atone side of R-1514. | ||
| Sony | KV2780R | POOR VERTICAL, REPLACE R-1503 AND ADJ RV-505 | Unit had poor vertical interface, very noticeable about 5 in-ches down from the top of screen. Waveform at pin 2, IC-1501 displayeddistortion. Found R-1503 to be open. Replacement did not cure problembut I also had to readjust RV-505, vertical bias. | ||
| Sony | KV2780R | INTERFERENCE PATTERN, REPLACE IC-651 REGULATOR | During first 15 minutes of operation, set displayed an inter-ference pattern on the screen resembling thin horizontal lines about 1/4to 1/2 inch apart, accompanied by a high-pitched squeal. This patternwas more noticeable on a bright scene. By bringing | ||
| Sony | KV2780R | PIX DISTORTED, REPLACE FBT 1-439-372-11 | Picture distorted. | ||
| Sony | KV2780R | ARCING PIX TUBE, REPLACE CRT | For the first 10 to 15 min. picture tube would snap, thiscould be noticed at the neck of the tube. After the 15 min. the arcingwould stop. The screen would display a white flash when this occurred. | ||
| Sony | KV2780R | INTERMITTENT HIGH PITCHED SQUEALING, GLUE COILS ON YOKE | Intermittent high pitched squealing. | ||
| Sony | KV2780R | REMOTE INOPERATIVE, REPLACE IC-001 DETECTOR ON "T2" BOARD | Unit would work with all manual controls. Remote was inopera-tive. Found no SIRCS coming into microprocessor. | ||
| Sony | KV2780R | COLOR TOO BRIGHT, REPLACE JUNGLE IC-301 ON "A' BOARD | Color intensity too high. | ||
| Sony | KV2780R | NO PICTURE, REPLACE TV/VIDEO SWITCH S-006 | No picture. | ||
| Sony | KV2780R | HIGH PITCHED SQUEAL (AUDIBLE) ALL THE TIME, REPLACE YOKE | Audible high-pitched squeal from inside TV cabinet all thetime. We are beginning to see numerous complaints of high-pitchedsqueal from 27 TV receivers. | ||
| Sony | KV2780R | DEAD, REPLACE IC-1401 AND R-1576 | Unit came in no sound, no picture. Traced problem to loss of9 volts. Found IC1401 shorting 9 volts, also found resistor R1576 changedvalue from 2.2 ohms to 100 ohms. |