I should be more clear. :-)
In another very recent thread, I documented how I did the ATX PSU conversion, including the jumper for the clock signal.
That didn't completely fix the machine (the Amiga PSU was completely dead for some time), but replacing the 5 small caps on the 040 daughterboard after that did. (I had observed leakage from the old caps)
Everything came back to life, old programs fired up again, the machine was back to normal, for a week.
Found it dead last night, just haven't had time to check the capacitors again.
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Maybe what I should ask...
... if I can't find the problem, or the fix on the 040 board, what are my options for replacement daughterboards?