Hi I have a JL Audio 1000/1 Rev 8, I am working on, seems to power up, but no audio. I have 58v on speaker terminals, with ref to chassis ground, += ,58.36 and neg = 58.38v.
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Drive signal into the amp, connect a speaker and work all pots and switches through their entire range in all combinations to see if audio ever plays through (even intermittently).