Can anyone tell me what can be a reason that makes a signal jumping as it does every couple seconds. I know that left and right channels are not steady because of a pinch roller (the left smaller one) and I'll replace it, got new and fresh from Marian a couple days ago, but jumping???
https://drive.google.com/file/d/1WGUv070Ayp4dUCq0-Tn9xa6HYd1MxT2n/view?usp=share_link
https://drive.google.com/file/d/1WGUv070Ayp4dUCq0-Tn9xa6HYd1MxT2n/view?usp=share_link