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Rog ajutor cu sursa tv led Philips 715G6679-P02-001-002m 40PFT5500/12


sorinB
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Rog ajutor cu sursa tv led Philips 715G6679-P02-001-002m din Tv 40PFT5500/12 .  

L-am primit cu urmatoarele componente defecte:  Q9101 ,R9101, R9103,  R9104, R9160, R9107, U9101 si C9115 .

Initial cand am vazut cate componente sunt defecte am cauta sa cumpar alta sursa, dar pentru ca acest model este mai mult comercializat peste hotare nu am gasit aceeasi sursa la noi in tara si am cumparat o 715G7857-P01-000-002S care are aceleasi tensiuni si semnale pentru placa de baza dar este de la un model de 43" .

Am stiut ca e posibil sa am probleme la backlight dar am zis totusi sa incerc .

 Tv-ul functioneaza normal primele 5minute pana cand ic-urile de la invertor se incalzesc si backlightul incepe de se stinge si se aprinde  intermitent .

Tensiunea fara leduri cuplate este 45v pe fiecare iesire ( modelul acesta are 4 barete a cate 9 leduri si sunt conectate cate doua in paralel)  , dupa cuplarea ledurilor scade la 26v functioneaza normal 5 min dupa care incepe flicarirea( daca pot sa spun asa).

Ce pot sa modific sau pot sa modific aceasta sursa  715G7857-P01-000-002S  pentru modelul meu de tv? 

Multumesc 

 

715g7857-p01-000-0020_philips_psu.pdf

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