On 2012-11-26, at 19:23, Gerrit Heitsch wrote: >> Got this one fixed. Crashing was unrelated to the lack of colour. Crashing was caused by broken KERNAL socket - replaced and crashes disappeared. Lack of colour was a bit more tricky though. I was hunting it for some time until I started watching the chroma waveforms on different boards recently, including the one in question. I noticed that on other boards trimming the crystal frequency leads to loss of colour and setting it back brings the colour back. But on this board no.. So I replaced the trimmer and adjusted it so that I get colour every time now. It sorts of explains also why the colour was more likely to appear after some time and less likely when cold - frequency drifting due to temperatrue difference. > > Hm, never had one of those go bad... But then, it's hardware, it will fail sooner or later for someone. Yeah... me neither (and I repaired hundreds if not thousands of those machines in the eighties and early nineties) - the reason why I didn't even think a bit of this. But it was the case here. Maybe some poor storage conditions (it was quite dirty from humidity derived deposits all over the board when I got it) ? Who knows. -- SD! Message was sent through the cbm-hackers mailing listReceived on 2012-11-26 19:01:37
Archive generated by hypermail 2.2.0.