Ideas on where to start with diagnosing intermittent static?

[SILVERGUN]

Mark,
This is just a stab, but I listened to your video and it reminds me of a noise that I get out my amp if I put an iphone anywhere near it.
 
These phones tend to make random connections to wireless routers (or search for them) as well as send cell signals back to the satellites to update the thousand things that we don't really need.
 
Just a complete guess, but I wanted to throw it out there because that it what your noise reminds me of.
Now that we all walk around with these transmitters in our pockets, this could be the future of amp noise troubleshooting.
 
Maybe iphone in his pocket coming through the guitar cable....and then at your house maybe a similar situation?
 
OR, lets say just some form of wireless transmission. 
 
 
 
 
 

[markmalin]

Mark,
This is just a stab, but I listened to your video and it reminds me of a noise that I get out my amp if I put an iphone anywhere near it.
 
These phones tend to make random connections to wireless routers (or search for them) as well as send cell signals back to the satellites to update the thousand things that we don't really need.
 
Just a complete guess, but I wanted to throw it out there because that it what your noise reminds me of.
Now that we all walk around with these transmitters in our pockets, this could be the future of amp noise troubleshooting.
 
Maybe iphone in his pocket coming through the guitar cable....and then at your house maybe a similar situation?
 
OR, lets say just some form of wireless transmission. 

Thanks.  Yes, I've heard this often, and I wondered about that initially but the fact that I could reproduce it by letting the amp idle for an hour or so, and the fact that when it was happening there was a DC shift at the wiper of the volume controls makes me pretty sure it's not a cellphone.  The other thing is, it happens when nobody is in the room.  I was letting the amp sit on and I've been in the other room when it "goes off".

[SILVERGUN]

......a DC shift at the wiper of the volume controls

Hmmm..
Sorry for coming in late on this one.
 
Yeah...that's a tough one.
Thought I'd throw my 2 cents at it.
 
Good luck Sir!
 
 

[markmalin]

......a DC shift at the wiper of the volume controls

Hmmm..
Sorry for coming in late on this one.
 
Yeah...that's a tough one.
Thought I'd throw my 2 cents at it.
 
Good luck Sir!

it's all good.  I think I have it.  Will continue to test and see if it remains quiet.