How to determine if Buster is failing

[matthey]

I have a similar problem on a 4000T. All the boards show up on power up but the boards will disappear on a reboot after the machine is warm enough. I replaced the Buster 9 with a Buster 11 and replaced the power supply but it does the same thing. I did notice that my Buster socket is warped. It bulges in the middle of 3 sides. I plan on getting a new one soldered in and the caps done (minor leaking just starting) to see if it fixes it but haven't got around to it yet. The 4000T (and 4000) look like the Buster socket is cheaper than the 3000(T) sockets.

[matthey]

Hmmm I wonder if there's any software tool to perform the buster chip test... wondering if the good old advanced amiga analyzer could do the job...

I've used the Amiga Analyzer from Australia and it didn't have a Buster test. I don't know anything that does.

I forgot to mentioned that my 4000T is unusual in that it has a socket for the Buster. It's an early revision motherboard that's yellow instead of green. Most have soldered Buster 11. The grounding points and connections to the motherboard should be cleaned if not already. Maybe this could be a grounding problem? Some of the 4000T main power connectors to the motherboard have arced and have black carbon. It might be worth pulling the power connector and looking. Mine had minor arcing carbon. I replaced the AT power supply with one from newegg but it didn't fix the Zorro slot problems. Problems like these probably aren't always the same.