Hello all. Recently, one of my Adcom GFA-5500s has been acting up. About three to four seconds after I turn it off, I get the "deadly thump" through my speakers. I know enough to know that speakers don't like this.
That said, does anyone have any suggestions as to where to take it. I've found a few Adcom authorized service centers fairly local, but I'm looking for individual input as well. (I have another amp to use in the mean time, so I'm not in too big of a hurry.)