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Thanks Aprendiz; I can't believe I didn't check that. I checked continuity from ISL through the resistors, but didn't from 7051/52 to 7050. Will run those wires and check back--thanks.
You got it, thanks Aprendiz. I didn't think the traces would be burned internally, so didn't really think to check continuity that far down. I guess it makes sense since U5420/21 were partially burned up. Thanks, Aprendiz! You guys can close this one up.