Yes, you should be able to measure ripple on the AC range, unless it is a real cheap meter that can't measure AC on DC. You can check by measuring a AA or 9V battery with the AC range, it should read 0V AC. If so, you should be able to measure ripple with it.
So there remains the possibility of going to all the trouble of repairing the power amp only to find you need a new "mainboard" :grr.
Quote from: Roly on March 11, 2015, 11:51:44 AMIf you mean the power amp, I agree . But there is still the original fault, which I don't think was power amp, and in this regard Line6 stuff can be non-repairable.
Even with a serious blow up this class of amp is normally quite repairable.
So there remains the possibility of going to all the trouble of repairing the power amp only to find you need a new "mainboard" :grr.