On 2012-09-12, at 18:03, Gerrit Heitsch wrote: >>> Otherwise... I had C90 got bad on a 250407. No capacity left at all, resulting in +12V for VIC and SID being only +8V. System worked, but I only got a b/w picture. That one was a light blue 407µF/25V made by GRAND SONIC. >> >> I have one board that boots to B/W picture when "cold". After some time colour pops in. It also quite often hangs (after some seconds) when cold. With time it also becomes more reliable. Voltages on the regulators/stabilisers look good. Don't have scope at hand to have some more close look but maybe this rings a bell for someone? > > Can you provide some extra information about the kind of board? Assy number, which voltages were checked and where... 250425 board. Voltages checked at regulators, VIC, SID, CPU and few other points for the "second" +5. > Crashing and b/w picture suggests a problem with the clock generation or the VIC not getting +12V. That seems to be fine. Funny part is that if I leave it on for longer it starts working better. Gets colour doesn't crash. VIC itself is fine too. Anyway, if it doesn't come as something that someone solved already I shall check it more thoroughly once I have better means for that ;-) -- SD! Message was sent through the cbm-hackers mailing listReceived on 2012-09-12 17:00:32
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