Dicas Reparação PANASONIC




Modelo - Chassis


Pesquisa: PANASONIC Enviar Dica Resolvida
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(Chassis)
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PanasonicAlpha 3
E-W bowing with no control effectCheck TDA8145 IC701 & R708 & L701 also 0µ01 50v decoupling cap to pin 1 IC701
PanasonicAlpha 3
Dead.R555 HT feed o/c.
PanasonicAlpha 3
Dead with LED flickering at sw onQ823 conducting as opto was turned on; Q825 was sw on because C822 0µ01 ceramic cap leaky
PanasonicAlpha 3
DEAD APART FROM BUZZING NOISER555 FUSIBLE RESISTOR OC IF EHT TOO HIGH AFTER REPLACING SUSPECT LOPT
PanasonicAlpha 3
Dead - R555 fusible res o/c in LOP stage feedLOPTx
PanasonicAlpha 3
Dead - LOPTr leakyAlso check R567 1A fuse feeding LOP stage for o/c
PanasonicAlpha 3
Dead - blows R822 4R7 5W & R555 LOP fusibleLine drive wfm dist - C501 0µ1cap in line osc stage leaky
PanasonicAlpha 3
Dark pic getting worse with timeQ355 2SC3311 on crt base leaky (black level ref)
PanasonicAlpha 3
Dark blank raster with no sound or displayNo micro activity - dis serial & clock lines to Txt panel to elliminate this cct; set works when this was done - IC3507 was faulty (MAB8461PW13S)
PanasonicAlpha 3
Dark blank raster - no sound.C1251 ( 10nf ) leaky , main microcontroller & memory chips.
PanasonicAlpha 3
Colour varies - blue content reduces - intC352 330pF ceramic cap decoupling Q366 emitter
PanasonicAlpha 3
Bright flyback lines across top of screen - very intFit kit TZSEN001 consisting of replacement scan coil and FOP chip
PanasonicAlpha 3
Black diagonal lines across pic - very intD329 zener diode was leaky MA4068 - stabilises supply to TDA4670 IC302
PanasonicAlpha 3
AFTER 5mins PIC + SOUND DISAPPEARSTUCK IN RESET C1251 10nF
PanasonicAlpha 2W TX25T2
Field - height excessive with top foldoverR469 150R o/c (under white ceramic res by loptx)


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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