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giogu_mihai

Invertor Sampo YPWBGL945IDG-2

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Buna ziua.

Urmaresc de ceva timp forumul dvs, iar astazi m-am decis sa scriu primul topic.

Intampin o problema cu un invertor Sampo YPWBGL945IDG-2. Backlight-ul lumineaza 2 secunde si apoi intra in protectie. Lampile sunt testate si sunt ok; la fel si partea de putere. Am incercat cu un modul identic (invertor) , iar monitorul functioneaza perfect.

Doresc sa depanez acest invertor.

Pana acum am schimbat condensatorul de filtraj 150uF/30V , cei 2 cond de 22pF/3kV - la fel face.

Q5 si Q6 masurati - sunt ok . Acestia au ca si marcaj pe ei YC721; in unele scheme i-am gasit ca YC711 - daca se poate un echivalent ceva deoarece i-am cautat pe internet si nu i-am gasit.

F1 - 2A - ok;

D2 - 197F - Sm 140A - ok;

Q4 - 4405- ok

Invertorul este construit in jurul lui IC1 - FP5001.

Va multumesc pentru timpul si sprijinul accordat.

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Schimbati cele doua condensatoare ceramice-cele albastre si pe cel electrolitic cu unii noi-nouti. Verificati si trafo daca nu cumva are spire in scurt, atat primarul cat si secundarul.

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Pai daca aveti un alt invertor IDENTIC,luati de pe ala integratul si trafo ,pe rand,si le puneti pe cel care nu merge!!!Sant doar cateva piese!!! :da

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Traf - OKIC1 - defect

Ati vazut!! Nu a mai fost nevoie de ...schema!!! :da

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