JVM 410H Noise

[Zoddman]

Hello all. This is my first post here. Seemed like a good forum.

I have a JVM 410H, just a few years old. It sits in my house never being moved. I play through it probably 6 hours per week or so. Certainly "low miles".
A couple of weeks ago it started making this swishing oceany background noise. I definitely narrowed it down to the amp.
When I play through it, it sounds fine. The guitar audio over powers the background noise. But when I"m not playing, there's that noise. Pretty annoying.

Any thoughts? Maybe the tubes need replacing, which seems odd to me due to the amount of hours being played through them...but maybe.

Thanks, Todd

[Rider1260]

You could have over 1000 hours on your tubes you could easily need some new ones

[Zoddman]

Do you think that could cause this noise, basically overnight without affecting the overall sound? Because the sound I'm getting is as it has been. Super good.

[Rider1260]

Yes amps can still sound great with tubes on there last legs.
You do not have to replace all your tubes at once ( just power tubes as a matched set ) most amps have a bunch of 12ax7s for preamp and reverb and such and the a pair or Quad of power tubes
I have fixed loads of noise issues just replacing one 12ax7 and yes they and go at anytime regardless of age Ive had some tubes last for hours and some for years.
PS you can also try reseating all your tubes, and cleaning all the sockets