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led samsung


codrut

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model:UE50TU7072UXXH

mb:BN9650991A

display:CY-GT050HGCV2H

 

Pleaca din stand-by,simye telecomanda,dar nu are nici imagine ,nici backlight.

Are o singura placa care contine sursa-digitala-t-con.

Din masuratorile efectuate, se pare ca nu am tensiune  la iesirea invertorului ,pentru led-uri.Pe condensatorul de filtraj al led-uri-lor am 280v.acesta avand valoarea de 8,2uf/400v.

Am desfacut panelul si are 3baretex12 led-uri care sunt bune. 

Dupa cateva secunde de la pornire,led-ul de stand-by face cate un flash.

Un sfat?

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