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Mark Levinson 20.6 Failing

hello, I recently acquired a pair of Mark Levinson 20.6 amps that seem to have not been used extensively (the heat sinks are still a dark black color)

After a year of using them, I encountered a problem yesterday where one of the amps started emitting heavily distorted sound and then shut down. I thought it was an overheating problem (both amps were very hot), so I turned off the gear and went to bed.

I tried turning it back on this morning and all went well for about an hour until the same happened. This time the amp started distorting heavily, but did not shut down. To my surprise, the amp was quite cold to the touch despite still being powered on.

Any opinions on how to diagnose the issue? I’m in Beirut, Lebanon, and servicing this amp would require me to ship it somewhere, so I’d like to fix the issue myself if possible.

Has anyone else encountered such an issue?
mariogee

Showing 1 response by kalali

kalali's avatar
kalali
1,977 posts
 
"Beirut is a big city..."

This is really helpful to someone who lives there, but that aside, the chassis in those amps are quite packed and you still need to disassemble a good bit to even do a proper visual inspection. Even then, you'll need some test equipment to determine the root cause of the issue. Not a DIY job, in my opinion. Those amps are definitely deserve a proper diagnostics and repair. Contact ML and see if they recommend a service center in your general vicinity. 
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