Sometime a RTC doesn’t work on an Amiga 4000. It can be a trace or via, but if they are all connected and test good the most common issue with this is a “floating” ground (pin 8) of U177. Or the RP5C01 RTC chip is dead 🙂 If we check the ground pin we see a […]
Tag: amiga 4000
Amiga 4000 – A3640 boot problem
A while ago I had an Amiga 4000 that boots fine with an A3630, but A3640 (or A3660) won’t boot. I spent many hours to find the problem, couldn’t find it. So I left the board for a week or two, after that I inspected everything again, and everything seemed ok. There was one thing […]