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Hi. I just bought Marshall 1959 HW and it's constantly humming when it's on. I have Wizard Modern Classic Amp and ENGL Powerball 2 and they don't hum like that when ON. Is it normal? Also when I strum a chord very loud mechanical noise going out of the back. Check the video I shot to hear how both issues sound:

asked 30 Jan 2020 at 04:15 AM

Andrew Zelenokhat
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My 1974x amp is quiet when nothing is plugged into it, but as soon as I plug my intrument cable into the non-tremolo channel, I get this awful cyclic noise.  Does anyone know what to do?   I replaced the ECC83 tubes one by one (testing it between each tube replacement), but it didn't fix the problem.

Here's a video of my problem.

https://youtu.be/lN_lhUAu7jA

 

asked 19 Dec 2019 at 11:10 PM

Brandon Isaak
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