Thanks for your input James it much appreciated,
Here is some more information that might shed more light onto what's happening.
My dealer told me the first time he fired it up the left channel heated up in approximately 30 seconds to the point where you could not touch the cooling fins for longer that a second. It actually stopped playing music and made a fair bit of squealing. The right side was normal. After it cooled down, He fired it back up and all seems alright. During the first test it was connected to some Martin Logan Odysseys.
The next day he fired it up and the left channel got hot but continued to play music. This time it was connected to some Energy 2.4V's.
For pre-amps he has tried, and Linn, Blue Circle, (These two the first day) and even some pre-outs of a Yamaha Receiver (during the second day).
Does this help shed any light on what's happening. I have not had a chance to talk to him on the phone yet. This information is only from email correspondence.
Technically the unit is still mine. While it is in his possession, he has not accepted it as a trade yet due to its new found problems. So I am not quite sure what to do now.
Also as far as I know, it is the left side that heats up every time no matter what speakers and pre-amp is connected to it.
Any help anyone can offer would be appreciated.
Thanks for the help,
Nick