Dicas Reparação




Modelo - Chassis


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Resultados 79038
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MarcaModelo
(Chassis)
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SonyKV2647R
NO SIGNAL RECEPTION ON CHS 11 AND 13, REPLACE IC-002 Could not tune in chs 11 and 13. All other channels OK.
SonyKV2647R
SHUT DOWN, POWER MODULE Power module causing high B+, shutting the set down. Uponreplacing power module, noticed non-linearity in the bottom half of thepicture. Top half of the picture was fine.
SonyKV2643R
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
SonyKV2145R
WHITE H BAND ON THE SCREEN, R520 INCREASED IN VALUE After ten minutes of operation, this receiver displayed aone-half inch white horizontal band at the top of the screen. Verticalsize and linearity were not affected.
SonyKV2142R
SNOWY PICTURE, REPLACE D2214, Q2224, Q2220 & UHF TUNER Snowy picture on all channels except Ch. 2. The reason youwould get a clear picture on Ch. 2 is due to the low voltage used onCh. 2 coming through the UHF tuner.
SonyKV1952R
PICTURE DISTORTION, C544 OPEN Set came in with narrow picture, pincushion distortion andvideo smearing. The 200 volt line measured about 140 volts.
SonyKV1948R
VERTICAL ROLL ON WEAK SIGNAL CH., RESOLDERED R581 Vertical roll on weak signal level. No problem on strongvideo signal.
SonyKV1547R
VHF CHANNEL FADE OUT After 30 min. to 1 hour of operation, low VHF channels fadeout.
SonyKP5040
INTERMITTENT MECHANICAL OPERATION, POOR GROUND CONNECTION Intermittent door opening. S953 on the motor: one side ofswitch was not tight due to no threads.
SonyKP5020
POOR FOCUS AFTER WARM-UP After warm-up, picture would go out of focus. Found REDpicture tube focus shorting inside tube. This caused blue and green togo out of focus, since all three tubes (focus) are connected to the sameblock.
SonyKX2501A
BEAT PATTERN IN THE PICTURE, RE-ROUTED CABLES P2 AND P3 There was a beat pattern in the form of a 1 inch vertical lineabout 2 inches in from left side, on ch. 7 only. Moving the AC cordwhere it was connected to the D board would increase or decrease theproblem.
SonyKV5200
RASTER WITH RETRACE LINES Set came in with all white raster with retrace lines. Audiowas OK.
SonyKV2654R
PICTURE UP/DOWN BUTTON STUCK, REPLACE S004/005/006 Picture up button was stuck. Therefore volume up/down andpicture up/down or channel up/down would not work. Found picture upbutton was worn. This switch was spring loaded in rather than out.
SonyKV2649R
DARK PICTURE, OPEN R541 AND SHORTED C531 Dark picture, slight retrace lines. No screen voltage toCRT G2.
SonyKV2647R
NO COLOR, REPLACE IC-501 Picture was dark and also had loss of color. Scoping IC501Pin 15, horizontal sync pulse was only 6 VPP - should be 11VPP. I haveseen other sets that displayed intermittent dark picture or change of hueonly. All are related to IC501 sync output. The s


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