I recently received my mini back from the factory with some minor maintenance and capacitor upgrade. The other day I noticed that after start up, the left side was not putting out any sound. I played with the volume knob and at full volume I could hear a small amount, but very weak and distorted. Then all of a sudden it starts working again. A few days later, it’s dead all over again. As anyone would, do, I switched the tubes, which had no effect now when I put the volume all the way up, there was no sound at all, completely dead. I connected the left-hand speaker to the other M to make sure that it wasn’t some kind of speaker death. I even changed the tube in my Z rock. However, the only other thing I can think of is connecting the dock directly to the amp bypassing the Z rock to make sure that is not where the problem is. And has anyone else ever experienced that? The last time I turn the suspect amp off the OC 2 cube stayed lit for an in ordinate like the time and then after that went out the 083 flickered for a little bit. Very strange what has happened

The source begins with a digital optical connection from the television set, or a signal from a CD player to a DAC and then the ZRock. I will troubleshoot.

False alarm. The first thing I should have checked, speaker wire was the culprit.