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mircea65

Led audiola tvdb 824led

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Schema pentru sursa chinezeasca nu ai sa gasesti, ce defect are sursa+driver led sau ai piese carbonizate?

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Buna dimineata,

 

se incalzaste foarte tare mos-fet-ul de pe tens. led+, pana se deslipeste de pe placa(practic in 2 sec fierbe). In rest tv-ul functioneaza normal, tens. de 12v si 5v normale-cred probleme comanda driver invertor. Vreau sa verific conzii din jurul driver(MP3389), dar nu le stiu valorile de asta vroiam o schema, si inca ceva-fara panel conectat nu se incalzeste mos-fet.

 

multumesc

cu stima!

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Guest dani502017

Imi este greu sa cred ca din cauza conzilor sa fiarba mosfetul,ai verificat baretele cu leduri? sau pune un bec pana in 40w pe alimentare leduri si vezi ce se intampla

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Buna dimineata,

 

se incalzaste foarte tare mos-fet-ul de pe tens. led+, pana se deslipeste de pe placa(practic in 2 sec fierbe). In rest tv-ul functioneaza normal, tens. de 12v si 5v normale-cred probleme comanda driver invertor. Vreau sa verific conzii din jurul driver(MP3389), dar nu le stiu valorile de asta vroiam o schema, si inca ceva-fara panel conectat nu se incalzeste mos-fet.

 

multumesc

cu stima!

Am avut asemenea defect, dar la alta marca de tv, de vina a fost dioda, dupa ce am inlocuit-o mosfetul nu se mai incingea deloc. Nu este exclus sa fie de vina si bobina, dar e mai putin probabil.......

post-237484-0-65069800-1491815920_thumb.jpg

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