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tv Westwood sasiu P1470A03

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am pe masa tv-ul din titlu , cu urm simptom:

la conectarea la retea , da sa porneasca de trei ori (se aude si releul pus pe demagnetizare de trei ori aclansand) , si ramane oprit.

se aude ca pleaca si inalta de trei ori (fractiuni de secunda)

am schimbat optocuplor, tranzistorul care face 5 volti (V502), trafo linii, rescris memorie

pe bec , sursa se comporta la fel: se aprinde si se stinge becul de trei ori ramanand stins

daca decuplez becul (sursa in aer pe B+) , tensiunile sunt normale in secundar : 110 , 25, 12 , 14 volti

mai are cineva vreo idee?

schema exista?


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