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Manley Amp is humming - troubleshoot :(

Hello all ...I have been chasing a gremlin on the left side of my system for about a year . Last night my Left side was completely distorted at lower volume and after that just turned into loud humming....

Manley Snappers
Manley Jumbo Shrimp Pre amp
Klark Teknik DN360 EQ
Source was Macbook Pro

So i switched the amps to see if the hum would follow the amp & it did ....even with everything off except amp... super loud low end hum ...like a grounding issue...changed all tubes 3 times , still hums ...any clues before I send it in?

thanks !

128x128tommypenngotti
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tommypenngotti OP
219 posts
 
@sns 
yes agreed

@fiesta7

  Im good with soldering iron , I didn't see anything upon first inspection that looked suspect...might take another look
fiesta75
1,378 posts
 
I use a magnifying glass now. Also freeze spray is a good way to find a problematic component or at least section, good luck.
tommypenngotti's avatar
tommypenngotti OP
219 posts
 
I looked it over just now , there's one cap under a bridge that looks a little smashed in , but nothing bloated , looks like Im gonna have to send it in ... 🙁
tommypenngotti's avatar
tommypenngotti OP
219 posts
 
sent to Manley....apparently it was the Caps on the top of amp, replaced all 8 on both sides ...I'm hoping this quells the noisy issues...Jumbo Shrimp preamp still suspect though....pulled off the lid and moved the middle circuit board and it was Cracklin' Rosie once... 😕
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