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Post subject: Hot Rod Deluxe - Can anyone identify this hum?
Posted: Tue Jan 01, 2019 1:22 pm
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Joined: Tue Jan 01, 2019 1:17 pm
Posts: 6
I got this amp used and it has been quiet and great. I replaced the 12AX7s with 12AT7s and swapped the speaker for a Celestion Heritage G12. Other than I don't mess with it. In the last week, it has started this hum. I've changed power sources, tested all the knobs and volumes, and it is a constant hum at the same volume regardless of any variable (except it turns off during standby).

Anyone have a guess at what could be causing this? Here is a video of it:

https://photos.app.goo.gl/B4UKiJQcgmg1od8Q8


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Post subject: Re: Hot Rod Deluxe - Can anyone identify this hum?
Posted: Tue Jan 01, 2019 3:18 pm
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Joined: Fri Feb 05, 2010 4:31 am
Posts: 14045
Location: Province de Québec, Canada
Check preamp Tubes & unbalanced Power tubes
Filter caps.


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