What happened to my A500?

[Munchkin]

So. I made a huge mistake. I didn't read PROPERLY.

Decided to upgrade the 2.04 kickstart on my Rev 5 A500 to 3.1

I read that pin 1 and 31 should be connected as well as 31 and 21. Here's what my huge mistake comes in since I didn't read properly. You can probably guess it.

Well, anyways. Put the 2.04 back in and it's still dead so, my mistake caused some kind of damage somewhere, question is what? Only got a quick click on the floppy, a blink on the caps lock led and a snap in the monitor speaker when I turn it on. Nothing else. Black screen and no power led.

I guess I blew some chip but which one?

[Munchkin]

I don't really know why I did what I did. I was rushing things and didn't think, at all. So I basically connected pin 1, 21 and 31 together.

But something did happen since it's now not doing anything when I power it on.

Had nothing happened it would have worked when I put the 2.04 kickstart and the 68000 back in but it's still dead.

[Munchkin]

I just feel so stupid. Had I just been patient and read properly this wouldn't have happened. Also, the old 2.04 kickstart with a cable connecting pin 1 and 31 across it probably contributed to fool me.

Oh well, I'm sure it's fixable, just need to figure out what's fried.

Tried to swap the CIA's but that didn't change anything. Maybe buy and old 500 to use for spare parts.

Looking at that layout it's quite different to my rev. 5 but one trace goes to Agnus pin 59 so I might just have fried Agnus.

[Munchkin]

Problem is I don't have that RP105 on my rev 5 board so there are some significant differences.

But it probably leads to both Agnus and Gary on both so either, or both, might be fried.

Have to be honest and say this goes over my head. I've just had my A4000 away for renovation so I'm gonna ask if he can fix this as well. I just don't have the equipment and knowledge to do this right.