Dicas Reparação




Modelo - Chassis W5


Pesquisa: W5 Enviar Dica Resolvida
Resultados 114
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
LG42LW5700
Não liga,fica piscando stand byFazer reflowr no processado e é só partir pra galera????????????Cabeça
AOCM19W531
Tv liga e em poucos segundos desliga o back ligth tv permanece.Fuga na linha dos drivers do inverter, que alimentam as lâmpadas.Trocar sem medir os diodos D203 e D204 ambos zeners de 11v. pode colocar zeners de 12V/1Watt.Givaldo Rodrigues
LG42LW5700
Não Liga . Led StandBy Pisca Lentamente .Mau contato nos terminais do processador por aquecimento ao longo do tempo .Aplicar estação de ar quente durante 1 minuto sobre o processador. Já consertei 3 LG com o mesmo defeitoEvandro Vizicato
LG47LW5700
Não ligaVerificar HS01G e D601 (1N5408)Eletro Pira
PHILIPS28PW5324/01
A8.0E AA
NÃO LIGACOND NO MAT 2633 (152K/2IKV) EM CURTOFUSIVEL DA FONTE BOMJOAQUIM CUNHA
Sharp 66FW53 widescreen DA-100 , 50 and 100Hz series
E/W faultCoil L603 part num RCILP0286BMZZ had severely burnt up and Q506 E/W driver 2SD2391 Part num RH-TX0151BMZZ was short circuit. If you have this fault check L604 for invisible dry joints, if you don't you may find you still have an E/W fault when you have replaced the faulty parts
Sharp 66FW53H
Dead - Neon litR713 and R714 560K high or o/c
Sharp 66FW53H
Dead - neon lit ... another fault!Check the BZW04145 diode across C720, if short circuit, replace and also replace opto-isolator IC704 MOC8106 and IC706 TL431 voltage reference. You can put an 817 opto-coupler in diagonally
Sharp 66FW53H
Colours ramping, poor greyscaleReplace IC1002/3, Set will need reprogramming afterwards
Sharp 66FW53H DA100
Failure of Q601 BUH515 and possibly Q506Found dry joints on C613. Also R613 had burnt top of C613. Fitted new parts, found Circuit no longer available. Sharp by name sharp by nature came to mind. Set only just over two years old
Hitachi C32FW523NA A8
No or very dull picture with osd and text just visible, A1 control makes little difference, looks like poor crt18v zener diode Z703 s/c located near lopt, it is part of the acl beam current limiter
Hitachi C32FW523NA A8
Procedure to enter service modeSwitch tv on then press menu then press vol up and vol down on the front of the set simultaneously and hold until menu appears
Sharp 66FW53H FW
Dead only neon litCheck D735 across 150v rail, if s/c you will need to replace the opto and the D735. Check Q601 line o/p transistor as this may also be leaky
Hitachi C32W511TN A7
Intermitently goes to standbyCheck R959 as described by Mark C24W511TN and found no problem there, however I discovered that several connections in the area of R959 had fractured. They appear to be components near/attached to a heat sink. Re-soldering the joins did the trick
SharpDW100 66FW53H
Dead - usually IC705 opto is to blame - Pt. No. RH-FX0106BMZZchanged to RH-FX0110BMZZ - When the opto fails it usually takes out the line output transistor(BUH515) and the feed resistor to the line o/p stage 1R2W resistor. You need to add a 145v avalanches diode to the circuit on the print side directly beneath C720(H.T. reservoir cap) which also will need to be replaced.


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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