Help - static noise in speakers

yogiboy and jea48, thanks.  I really thought those ideas would work, but they didn't.  I can try again to clean them, but the static stayed on the right speaker.  

I'm still waiting for McIntosh and Audio Advice to respond to my support requests.

So now, I've removed and reinstalled the tubes several times with no improvement.  All the tubes are lit up green.

I also tried a different speaker cable with no improvement.  

I hate to buy all new tubes, but it seems that the problem is in the McIntosh amp

I did try moving the tubes to the other side, and even tried 2 new, extra tubes that I had on hand - no improvement.

So I guess I will wait for McIntosh to respond (even thought it took them weeks to respond the last time I had an issue)

faustuss - you are correct.  The Red River box was right next to the other one and they look almost identical.  My speaker wires are AQ Rocket 44

oddiofyl - you are correct as well.  I had no idea, but yes - when I moved the ethernet cable farther away from the amp, the noise stopped.  

Thanks to everyone who responded.  After all the troubleshooting, it was the simplest fix - move the ethernet farther from the amp.

I tried unplugging the amp for about 5 minutes but that didn't fix it.  

I also just plugged in headphones and I don't hear the static. So does that mean it may not be the tubes, but maybe the speaker out connection?

Thanks for all the ideas everyone.