Dicas Reparação SONY




Modelo - Chassis


Pesquisa: SONY Enviar Dica Resolvida
Resultados 18945
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyBE2A KVM2140UB
Pic & sound fade off aft prolonged useCheck / replace light blue caps C821 100µ 16v & C823 22µ 50v also C021 22µ 50v near jungle chip also check sm res below it for corrosion
SonyBE2A KVM2140
Sound drops & pic dims aft an hourQ005 DTA143TK sm on print side of pcb coll dropped to 2.5v (11.7v) - Tr faulty
SonyBE2A KVM2140
picture faded over several hours & the sound level reduced too.When changing the volume, also adjust brightness.usually caused by Q005 (2SA1162-G or 2SA 1037K). This device reads high resistance when tested & needs checking on the ohms time 100 scale of the AVO. In my set this SM transistor was OK. The fault at length was traced to C012 22mfd 50v which was leaking through the PC & had damaged SM resistor R045 47K along with a piece of print running it. All SM parts in this area had to be removed & the PCB cleaned up & bridged where the acid had damaged the print.
SonyBE-2A KVM2101U
E-W error, width control not working properlyC806 47nF 250V (113618711)
SonyBE2A KVM2101U
E/W slightly bowed & excess widthC806 47nF 250v in E/W diode mod cct
SonyBE2A KVM1420U
Pic & sound fades aft 15 minsAdj vol increases contrast - C012 22µ leaked causing damage to Q005 DTA143TK & R045 47k sm
SonyBE2A KVM1420U
Snowy pic with noisy soundSAWF SWF101
SonyBE-2A KVM1411U
tuning driftresolder L501, also resolder R818 back of PCB near LOPTx
SonyBE-2A KVM1400U
no power, LED flashesPS801 N15 o/c in 120V supply to LOPTx
SonyBE-2A KVM1400U
low sound/no soundC204 470uF 25V pin 2 of IC201, also resolder IC201
SonyBE-2A
flashing, loss of col dry joints lop tr heatsink - interferes with other tvs
SonyBE2A
Pic goes to bright white raster intS/castle pulse pin 10 IC302 dist - D504 by lopt leaky
SonyBE2A
No start upR602 270k 1/2w (under chopper tfmr) o/c
SonyBE2A
No Picture ( VIDEO MUTED )C329 ( 22uF TAN ) s/c.
SonyBE2A
NO PIC-LOSS OF SYNCC14 ( 4.7uF 50V ) , P501 ( N15CCT )


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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