Thank you for your responses.
FesterBlatz wrote:Are you certain when you put the 5x86 back in, you had it positioned correctly in the socket?
Well, I took extra care this time, but in retrospective it's hard to tell. Now given I did put it in the wrong way, the thing broken should be the TIP107, right? (And eventually the CPU I guess.) Given that I didn't put it in the wrong way, what else could have caused the TIP107 to overheat like that?
dirkmirk wrote:I had the same problem with my LS486E mainboard, I have no experience with electronics so I just use 5V cpus or 3V with adapter.
I thought about that too, unfortunately these boards are quite rare and really expensive, so I figured I'd go with soldering a cheap replacement transistor. Well, lesson learned, kinda.
brostenen wrote:
If you have followed the manual, then most likely the manual are wrong on the FSB settings.
On my board, it is "reversed" from what is explained in the manual. I have had help on Vogons before.
But that should only apply to the FSB right? Which shouldn't cause the TIP107 to overheat, just general CPU malfunction of some kind, I presume.
brostenen wrote:Anyway....
Regarding the TIP107, are there any heatsink on your's?
I put the heatsink of the original TIP107 on there. I instantly burned my fingers when I touched it and the TIP107 had bubbles on its surface when I removed the heatsink. So I don't think that was a problem of the heatsink, it definitely became much too hot for 4 or 5 seconds of normal operation.
Well I do have the impression that in case I did not put the CPU in the wrong way there might be something else that's faulty. I'm thinking about measuring the voltages at the TIP107 mounting holes, I feel like there's something wrong. Do you got any other ideas?