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Mk III no amplification

Posted: Jan 20th, '18, 12:09
Hello All,

After coming back from vacation my amplifier is no longer working correctly (amplifier went from daily use to not being plugged in for about 3.5 weeks). I receive no amplification any longer. As far as I can tell, it seems to be heating up the tubes properly, though they seem a little cooler than usual.
I have already swapped out the tubes for others that are known to be working and I have the same issue. I swapped both the power cable and outlet, but that did not change anything either. I have tried to take a look inside, and as far as I can tell none of the capacitors have popped (though I'm not 100% sure)

Any further suggestions for troubleshooting? Thanks in advance!