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bogdan_bogdan889

tv golstar

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Va salut . Am primit la reparat tv golastar model CK20A80X.Sasiu PC31Asursa cu buz91cadre cu La 7833procesor GS8434-01Cjungle TDA8362bTv se manifesta in felul urmator,sursa porneste doar fara bec are 115 daca pun becul dupa ce il pornesc sursa porneste si becul se aprinde daca pun becul si incerc sa-l pornesc am tensiune 0.acest sasiu are un releu care da afara nu imi dau seama.Am gasit c-urile din bara de 160 uscate .Restul le-am verificat cu ESR-ulAm mai gasit r312 carbonizatasi in scurt zenerul de 9v1 d302Cu finalul de cadre dar jos tot asa se manifesta.

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Banuiesc ca surs estee cu TDA4605.Daca-i asa trebuie sa porneasca cu becul conectat pe U1.Schimba si 1uF si 47uF din primar sursa.

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100% sursa trebuie sa plece cu BEC(eu folosesc de 40W)Daca nu pleca ceva e defect acolo.

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Am gasit pe circuitul de alimentare jungla 20v in loc de 8v,un zener ars nu se vad pureci ,amesteca culorile su nu se desfasoara imaginea.

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Eu nu cred ca jungla asta a rezistat de 20v alimentare.

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