Dicas Reparação




Modelo - Chassis KV2649R


Pesquisa: KV2649R Enviar Dica Resolvida
Resultados 35
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV2649RX
POOR FOCUS ON THE SCREEN, REPLACE T861 Set had poor focus on right side of screen (about 4 inches).By tapping T-861, the focus would get worse or better.
SonyKV2649RX
NO FUNCTION, REPLACED D021 Set cannot be turned off, except by the master switch.Channel up/down, volume up/down, picture, color etc. do not work. FoundD021 leaky.
SonyKV2649RX
MISLANDING, REMOVED SHORT When viewing pix at low brightness, the edges of the rasterappeared reddish in color. Inspection revealed slight distortion in redinput signal to video drivers. I found the output terminal on the AVboard had a lead shorting to the junction of R12 and R
SonyKV2649R
NO VERTICAL DEFLECTION, REPLACE C508 The set had two problems. No vertical deflection. Thewaveform at Pin 7, IC502 was pulsing, all the voltages were fine. FoundC508 had a 47uF instead of a 1uF that the manual calls for. The secondproblem was no high band. Found the UHF and VHF output
SonyKV2649RX
IMMEDIATE SHUT DOWN, REPLACED HVR BLOCK Set would come on and immediately shut off.
SonyKV2649RX
DEAD, REPLACED H OUT TRANSISTOR Set came in dead. Found horizontal output shorted.
SonyKV2649RX
DARK PICTURE, ADD CAP TO C546 When viewing scrambled channels using the Jerrold cableconvertor box, the picture is very dark with smeared reds.
SonyKV2649R
INTERMITTENT FADE OUT, CLEANED CRT PINS Picture would fade out to a dark raster, very intermittent.All voltages checked OK.
SonyKV2649R
LOSE COLOR, REPLACE X001 When unit was turned off/on color would lock in. Turn off/onagain and you would lose color and the channels would not change.
SonyKV2649R
NO SOUND, REPLACE IC605 No sound in left or right channels.
SonyKV2649R
INTERMITTENT POWER ON/OFF, REPLACED D021 Intermittent power on/off. Customer controls erratic.Found D021 leaky on MT board.
SonyKV2649R
VOLUME LOW, REPLACED T205 At maximum volume setting, the volume was about 1/3 ofnormal. Inspection of sound output signal at Pin 14, IC201, revealed avery low level signal.
SonyKV2649R
DARK PICTURE, OPEN R541 AND SHORTED C531 Dark picture, slight retrace lines. No screen voltage toCRT G2.
SonyKV2649RX
BAD RECEPTION ON CABLE If the cable signal coming into the distribution amplifierbeing used by the dealer is disconnected and reconnected, the channels onthe KV-2649RX come back extremely detuned, and can only be received if youaccess another channel and the set is OK. -HQ CO
SonyKV2649R
NO POWER AND TUNING OPERATION, SHORTED D021 ON MT BOARD Unit could not be powered off nor any channels changed,display locked on channel 11, reception was normal.


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