Re: OPTI-495SLC 386 WB mainboard fails to POST when powered up but POSTs after reset
Posted on 2023-03-25, 12:55
It could be PSU fault. PWR_GOOD signal is supposed to have certain delay and pulse length, if it's not in spec mobo might not reset properly. Could also be "tired" chips or marginal filtering capacitors on the mobo, or a combination of both. In general it's not easy to fix (unless PSU replacement …