Goodguys instructions are sound and worked for me as well. It seemed impossible to predict when it would drop and first I thought it was heat related but I got past that because the center channel would drop when I switched between speakers A/B. After opening the unit up, I could not find any suspicious solder joints so I re-soldered all the connections on the four blue relays and the unit seems to be working just like new. Thanks so much for posting this.

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