Dicas Reparação




Modelo - Chassis


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Resultados 77938
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV1945R
NO PICTURE, C1008 IN PRESCALER SHORTING TO FRAME The following notes were made in determining problem. 1) Nowave train at PLL IN, TP59. 2) No voltage on Pin 15, IC003. 3) Voltageat tuning point on tuner went to 31.5V and would not vary. Cause - C1008on prescaler was shorting to adjacent frame on p
SonyKV9300
INCORRECT BRIGHTNESS The set has an excessive brightness. The screen control ishigh and cannot be adjusted, R706 is open.
SonyKV9300
RETRACE LINES Retrace lines, no screen control.
SonyKV2645R
AUDIO CRACKING, REPLACED T207 Intermittent audio cracking.
SonyKV2643R
NO SOUND No sound, picture OK.
SonyKV2643R
CHANNEL LOCK, REPLACED L001 Right after turn-on, tuner would lock on a channel. Wouldnot change channels manually or by hand unit. It had no clock on Pins12 and 13 of IC001 (volume and on/off OK).
SonyKV1945R
POOR REMOTE OPERATION, RESOLDERED X002 ON MD BOARD Poor response from remote control. Poor range - missesfunctions.
SonyKV1945R
POOR REMOTE OPERATION, RESOLDERED SHIELD TO N BOARD Weak remote range. This unit had poor shield ground on theN board causing the short range of remote control.
SonyKV1913
NO AUDIO ON CH 10-12 No audio on channel 10/12 or very low sound. Found channelind. lamp for channel 10/12 defective.
SonyKV1545R
REMOTE OPERATION RANGE TOO SHORT, OPEN GROUND "N" BOARD This unit had poor shield ground on N board causing shortrange on remote when set was on.
SonyKV1221R
PICTURE DISTORTION, REPLACED C524 Picture pulled up 3 inches on bottom of the screen and upperright hand corner blanked. Found C524 off Pin 13 IC301 was installed withpolarity reversed.
SonyKP7220
INCORRECT BLUE CONVERGENCE, REPLACED D5320 This unit had a blue convergence problem. The blue verticallines were wider than the red or green.
SonyKP7200
INCORRECT TUNING OPERATION TV would scan but would not stop on stations.
SonyCFS45
DEFECTIVE SIDE PLATES Plastic handle side plates on this model break. Handle sideplates may not be strong enough to carry weight of this model under allstress conditions.
SonyKV8000
POOR H SYNC Set displayed poor horizontal sync.


Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

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