Dicas Reparação

Modelo - Chassis

Pesquisa: Enviar Dica Resolvida
Resultados 77938
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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
INCORRECT BRIGHTNESS The set has an excessive brightness. The screen control ishigh and cannot be adjusted, R706 is open.
RETRACE LINES Retrace lines, no screen control.
AUDIO CRACKING, REPLACED T207 Intermittent audio cracking.
NO SOUND No sound, picture OK.
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).
POOR REMOTE OPERATION, RESOLDERED X002 ON MD BOARD Poor response from remote control. Poor range - missesfunctions.
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.
NO AUDIO ON CH 10-12 No audio on channel 10/12 or very low sound. Found channelind. lamp for channel 10/12 defective.
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.
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.
INCORRECT BLUE CONVERGENCE, REPLACED D5320 This unit had a blue convergence problem. The blue verticallines were wider than the red or green.
INCORRECT TUNING OPERATION TV would scan but would not stop on stations.
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.
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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