About two weeks ago I noticed that I started getting interference patterns on my 5040 RTV recordings made in my home office. The RTV sits directly under the TV (and the TV is on a TV stand in the armoir).
Also, you could see the same interference while watching TV, and not just a recorded RTV show. The noise was restricted to mainly broadcast type stations. Here, they are 2, 3, 5 and 7 (CBS, FOX, NBC and ABC, respectively). There was some interference on higher up channels, but I didn't really care. I have an analog cable box on this particular TV/RTV.
I unplugged everything from any outlets that were on the same circuit as where my RTV and TV were plugged in. Still, the interference was there. I uplugged the RTV and bingo, the TV cleared up. Plugged the RTV back in, the noise came back. Another TV off of a splice on the same cable wire was curiously interference free through all of this.
I plugged everything back in and the interference came back only when the RTV was plugged in (either wiuth the blue LED showing off or on).
At this point, I was thinking that my RTV was hosed. But, when I tried it on the initially interference free TV, the recordings and live TV viewing were completely clear of any interference patterns.
So, my conlcusion is/was that the TV experiencing the noise was what actually had gone bad. The RTV and the TV together were creating noise on each other, but the TV was the instigator. Seperating the two has seemed to fix the problem.
Any theories? Particularly since the interference hadn't been there for 9 months (since I got the RTV) and started up out of the blue. I'm an EE, but this is out of my area.