In the process of re-capping an SE/30 board. I did 2 caps yesterday without any problems, it tested fine. I did 4 caps and ran out and decided to test the progress so far.
Plugged it in, turned it on. First few times I got the corrupted screen so I just turned it off and on a few more times until I got the correct grey screen (this worked before to get it to boot sometimes when I just had the 2 caps replaced. Nothing got it to boot with no caps replaced though. I think the cap near the ROM is integral.)
I got the grey screen for a few seconds and then POP one of the new caps blew it's top and vented. It's one of the caps near the power connector.
My theories are:
1. Bad new cap.
2. I did it wrong (I got the + on the right side and didn't lift a trace, that's as good as it gets for me)
3. I need to replace all the caps, before powering it on. Although I did my LC II board one at a time, one cap, then test, one cap, then test, and that worked fine.
Plugged it in, turned it on. First few times I got the corrupted screen so I just turned it off and on a few more times until I got the correct grey screen (this worked before to get it to boot sometimes when I just had the 2 caps replaced. Nothing got it to boot with no caps replaced though. I think the cap near the ROM is integral.)
I got the grey screen for a few seconds and then POP one of the new caps blew it's top and vented. It's one of the caps near the power connector.
My theories are:
1. Bad new cap.
2. I did it wrong (I got the + on the right side and didn't lift a trace, that's as good as it gets for me)
3. I need to replace all the caps, before powering it on. Although I did my LC II board one at a time, one cap, then test, one cap, then test, and that worked fine.