Low hum from amp

Hello

I have a low hum coming from my integrated amp.
When I turn up the volume, the hum does not get louder but stays at the same pitch.
Any ideas please as to what's causing this?
Thanks!

greh03-12-2020 10:15am

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roberjerman Details Discussions Posts This discussion Message User 4,319 posts 03-13-2020 at 10:16am Copy Comment URL Report Comment Edit Delete 60 hz hum from a deteriorating power supply cap.
greh OP Details Discussions Posts This discussion Message User 134 posts 03-13-2020 at 10:42am Copy Comment URL Report Comment Edit Delete My amp is a Manley Stingray. When I first power it up, the hum isn't audible until I'm about 30 minutes into listening. Thank you dweller for the correction.
thecarpathian Details Discussions Posts This discussion Message User 5,142 posts 03-13-2020 at 11:54am Copy Comment URL Report Comment Edit Delete Did it go from not humming at all to recently humming without you changing up anything?
twoleftears Details Discussions Posts This discussion Message User 5,327 posts 03-13-2020 at 01:31pm Copy Comment URL Report Comment Edit Delete https://www.psaudio.com/ps_how/how-to-find-and-fix-hum-extended/
jea48 Details Discussions Posts This discussion Message User 4,788 posts 03-13-2020 at 02:04pm Copy Comment URL Report Comment Edit Delete greh OP131 posts 03-13-2020 5:42am My amp is a Manley Stingray. When I first power it up, the hum isn’t audible until I’m about 30 minutes into listening. When I first power it up, the hum isn’t audible until I’m about 30 minutes into listening. That could be caused by a filter cap in the power supply going bad. Does the hum sound like this? 120Hz hum. https://www.youtube.com/watch?v=pC4Uzt0qm2E Or does the hum sound like this? 60Hz hum? https://www.youtube.com/watch?v=SVZ2P0KsLic .

19 posts total
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