Stay civil, this isn't Twitter.
I agree, post a sample clip of this noise. Sometimes people use the wrong jargon to describe errors, so it's best to always confirm.
Audio errors with VCRs are always from the audio head. (In theory, I guess it could also come from inferior processing on the mainboard. But realistically, in practice, I doubt it happens often, or at all.)
More often than not, the VCR is falsely blamed for capture/processing that happened after the video output the signal. So process of elimination is required.