Right after turning on the switch, I hear scratchy noise from the speakers intermittently. Losing sound output, reduce in output level occurs also. This happens on both channel, but left side seems to be worse. I have had a retailer look at twice with no success. They could not find anything wring. I sent the unit to a retailer in L.A. who was recommended by MusicHall. They also could not recreate the problem. When I touched the metal case, it sometimes fix it. So, I guess there may be a solder crack somewhere. Has anyone had a similar problem and found a solution ?Thanks,
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