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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 cbrents73

cbrents73's avatar
cbrents73
151 posts
 
I believe Richard Kreymeyer is still at Mark Levinson in Service?  He can tell you exactly what’s wrong or what you’re possibly going to need, but my guess would be capacitors.  The fact that the amps weren’t used extensively prior to you getting them is actually worse. Had they been left on all the time and used more frequently, they would likely have gone on and worked just fine.

Call Levinson as the prior post suggested and see if Richard is still there, but anyone there can help.  All in all, plan on a costly repair.
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