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goldstar ckt-2190


philip

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buna seara !Am un tv goldstar ckt 2190 care functioneaza dar are o problema mai ciudata , ,il pot opri ,pot schimba programele dar nu-l pot porni din telecomanda.poate cineva sa ma ajute?

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DIn butonul general porneste?Ar trebui sa porneasca daca e apasat pana in capat sa faca si contactul auxiliar.Chiar acest contact ar putea fi problema.

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Acest tip cu sasiul PC04(idem 9902) are doua circuite de pornire care asigura ferm cuplarea releului pentru bara U1=117v; 1)din butonul de retea-asa cum a mentionat Dl dan cod- (putin tinut pres) pe spatele butonului exista un microintrerupator(plici) care initializeaza proc PCA>tranzistor ST-BY>releu si 2)celula IR+sursa(comanda telecomanda) >proc PCA>un grup de tranz>tranz st-by>releu .Verificati mai intii microintrerupatorul daca cupleaza la cursa maxima(dar sa revina aotomat si tensiunile secundare din chopper de 13vsi 19v corecte(cond 470mf/16-25v).Vezi schema, cum functioneaza!!!

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