This sounds like a problem in at least one channel of the power amplifier. Only an experienced audio technician should attempt to repair this problem. It is not an obvious or easy fault for a novice to diagnose or repair. ie, you have a situation in which the unit seems to function at low power levels, but the problem become apparent at higher power levels.
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This sounds like a problem in at least one channel of the power amplifier. Only an experienced audio technician should attempt to repair this problem. It is not an obvious or easy fault for a novice to diagnose or repair. ie, you have a situation in which the unit seems to function at low power levels, but the problem become apparent at higher power levels.