In an amp I would say its a capacitor not holding charge. I called the new company and they will repair, though the quote on my Tercet III was 150 dollars, and if I am not mistaken they said that is the minumum charge. I'm still wrestling with it in my case. I know a Cal 10 is worth considerably more than my Tercet so I think it would be worth the phone call and the repair. You never know till you ask.
Good luck in any case.
Good luck in any case.