Dicas Reparação
Modelo - Chassis KV2643R
Pesquisa: KV2643R Enviar Dica Resolvida
Resultados 31
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2643R | ETC (ELECTRO THERMO COMPENSATION) COIL NOT NEEDED | The new replacement CRT: A67JHG01X (8-735-453-05) does nothave the ETC coil on it. Should the coil from old CRT be removed andinstalled on the new CRT? | ||
| Sony | KV2643R | SMALL PIX/PREMATURE SHUT DOWN, REPLACED L810 | The picture was pulled in from the side about 2 inches andwould prematurely shut down. We found L810 to be shorted. | ||
| Sony | KV2643R | SHUTDOWN AFTER TWO MINUTES, REMOVED JW-54 | Unit would play for about 2 min. and then shut down. Puttingunit on variac at 90VAC, unit would play. | ||
| Sony | KV2643R | SHUT DOWN, REPLACED D502 ON A BOARD | Unit would shut down when the voltage of D502 dropped below4.8V. In the schematic Pin 9 of IC501 shows 5V. Proper voltage shouldread 5.8V. In turn D502 would read 5.6V. When the voltage at D502dropped to 4.8V, waveform was distorted and unit would sh | ||
| Sony | KV2643R | H FLAGGING ON THE TOP OF THE SCREEN, REPLACED IC501 | This unit had slight horiz. flagging at the top of the picturewhen using the still/slow features on an SL-2700. All other modes (offair, cable) worked fine as did other Betamax and VHS sources. The onlyproblem was with the still/slow features on the SL | ||
| Sony | KV2643R | JAIL BARS ON THE SCREEN, REPLACED C539 | This unit had jail bars across the screen. | ||
| Sony | KV2643R | NO TUNING, REPLACED C519 | No programming any channels on manual or auto. You could setthe stations appear on the screen but they would not be programmed in thememory. During auto program, the neons would not light up in sequence asthe set tuned through the bands, only channel 2 | ||
| Sony | KV2643R | INTERMITTENT SHUT DOWN, REPLACED H STAT CONTROL UNIT | Occasional slight arcing could be heard and set would inter-mittently go into high voltage shut down condition. Inspection of H-statcontrol unit showed cracks in the plastic housing around the bottom cornerwhere one of the ground leads exists the unit. | ||
| Sony | KV2643R | VERTICAL LINE ON THE PICTURE, REMOUNT Q701 | Vertical line appears in the center of screen on brightscenes. Found Q701 installed wrong at factory. C was connected to E.B was connected to C and E was connected to B. | ||
| Sony | KV2643R | VERTICAL BARS ON THE SCREEN, REPLACED C539 | Vertical bars on left side of screen. Almost like ringing.Horizontal spike riding on B+. | ||
| Sony | KV2643R | RETRACE LINES, REPLACED R749 | Excessive brightness/retrace lines. RV2203, RV304, RV701 haveno effect, Pin 12 CRT = 850V. | ||
| Sony | KV2643R | NO CHANNEL LOCK, REPLACED C206 | Except on low band this unit keeps on scanning stations.Ch. 2, 4, 5 could be tuned in but slightly have weak video (slight snow).Found C206 leaky causing a drop, at Pins 26 and 28 to 1.7 volts insteadof 4.6 volts. | ||
| Sony | KV2643R | UNDER SCANNED PICTURE, R533 VALUE CHANGED, REPLACED | Picture under scanned horizontally and vertically. Foundresistor R533 changed value, should read 1.2 ohms, read 14 ohms. | ||
| Sony | KV2643R | NO OPERATION, REPLACED C539, C805 AND R812 | Set inoperative. Found R812 open and C805 leaky. Replacedthem and picture displayed vertical bar (approx. 5 inches) on left side,R812 was running warm. Found C539 open. | ||
| Sony | KV2643R | RASTER PULSATING, REPLACED R609 | Picture and raster pulsating. The 135V line exhibited samepulsation. |