Well, my parts finally came in. I bought enough 100uF (x30 105C) and 1uF (x12 ceramic) to fix 3 receivers.
I have a 606 that is showing very bad symptoms. It used to be my main receiver but I got frustrated and ordered a new Denon AVR-790. Cool as a cucumber, but what a crap remote... I like it a lot better now with a Logitch Harmony One. ...but I digress. I lent this 606 out to a friend that had nothing but now is suffering with long wait times, etc.
CZ, the reason I was asking about the 1uF caps is because my 667 still works perfectly. I kind of interpreted (maybe incorrectly) SLPdart to be saying the root cause of the failing 100uF caps was the ripple from the regulators. At one point he says if you don't apply the 1uF across the regulators, you're bound to have another failure eventually. So, is it reasonable to assume that if I just apply the 1uF caps to my perfectly working 667, it's probably not worth the trouble "upgrading" the 100uF while I have everything apart? Or maybe just the ones he marked with a black dot in his photo? Or should I just blast all the 100uF while I'm in there, pre-emptively?
The other 606 is one I recommended to my uncle that doesn't live nearby. I feel pretty guilty about recommending a lemon to him, since he relied on my judgement for all his AV purchases.
I hope I can fix them all, I'll probably start this weekend.