Thanks!

Ordered a Torx screwdriver yesterday and it should arrive in a few days.

Will keep you apprised of my progress.

Am I correct in thinking that the logic board is probably ok, and that the problem most likely lies with the analog board?

From other posts on this forum, I gather that a Mac Plus analog board would work in a 128k. I do have a Plus in working order so perhaps I could try swapping its analog board in this machine to see if that would work.

Now I just need to find room in my apartment to work on this.. :?: