I suspect the ESR caps may have been a factor ins solving oliviaiacovou's issue in addition to replacing the "usual suspects" list. Reason I think so is I had my AB board recapped by Amiga or Rochester personally and I assume he used the low ESR ones. I've had a few successful starts but still...
Welcome to the world of pain the Classic AB has brought to many lives as I documented here. Rooting for you to find a fix and watching as the problem is pretty much identical to the one I'm having.
Thanks to all for sharing stories and insights, glad I am not the only one ;). I absolutely know there is a way to get this thing back going again but I think it's going to go in the "deal with it later" pile for now as the painstaking task of component replacement and the likely no difference...
Ok, since I know you could make a coffee table book with posts about the Classic analog boards here's my story so I can share some common misery:
I had both boards on a Classic II recapped by an expert and it was doing well for about 8 months then one day on startup: no chime, just clicking...
Yup hardware support definitely helps drive legacy software being phased out. Add that and Apple's leave the past behind approach (I still remember when the iMac came out what a scandal it was that it had no floppy disk drive) and I think we were fortunate to even had it supported through Tiger.