This is an LC I bought as part of a deal because one of the ROMs was dead and would not boot. I recently got a new set of ROMs, put it in, and "BONG!"

It's alive again!

But it is squealing from the speaker, which is a sign of it needing a recapping job. But this LC was recapped, but I am using a PSU from another LC III. This LC III PSU is not recapped, but will be soon as soon as I get some caps. I do have a LC475 PSU that is recapped, and will test that tomorrow for right now I am tired.

I'm suspecting the PSU as the cause the squealing. If so, I got nothing to worry about. I just need to recap a couple of PSUs and close up the machine and call it done.

This is my first Mac Repair since "coming back."

But what else can it be? Any ideas?