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Pathos Classic Mk 3 Problem, Please Help

Pathos Classic MkIII left channel goes dead, just a very light hum, after ten mins of use on all inputs, then powers back up fine after restart for 10 more mins. Unit worked fine for me then took a 2000 mile road trip boxed in the back seat of a car to the new owner's house. This never happened before. Any ideas would be greatly appreciated. Thanks.
dreadhead

Showing 2 responses by dreadhead

dreadhead OP
353 posts
 
Thanks for your input. Pun intended.
dreadhead OP
353 posts
 
Thanks to your advice, when the new owner switched the tubes around he discovered that one tube was bad. We are wondering what a suitable, not used, new replacement tube might be right for this application. Thanks again.
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