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Ai schimbat si memoria Ic 1001 M24C16 cu una goala ???Daca 3,5 12 si 24 V sant ok , vezi poate ai scurturi pe mainboard dar astae mai putin probabil .Mai verifica totusi diodele de pe 12V, 24 V din sursa .

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  • 3 years later...

Acelasi simptom. Tensiuni ok (3,5-12-24). Ledul rosu se aprinde si stinge lent si ciclul se repeta. Fara alimentarea placii de baza neoanele se aprind corect. Nu da decat comanda pentru power on/off. Nu da comanda pentru aprindere neoane si nici pentru activare alimentare panel (la comanda fortata este ok-neoanele se aprind si respectiv apare 12v pentru panel). Procesorul, cu radiator, se cam incinge. Regulatoarele IC407-1,5V, IC405-3,3V, IC402-2,5V-1C403-1,26V sunt bune. Si tensiunile. Problema ar fi cu regulatorul IC406-5V care scoate putin peste 3v si variabil. Aici banuiesc un consum exagerat. La alimentarea externa cu 5v simptomul nu se remediaza. Mai are rost sa incerc o resoftatare?.

Edited by yokoono
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