Canon VR-HF720 dim band on picture / bad sound

[luRaichu]

https://www.youtube.com/watch?v=mAesU8hz8PU
The video linked above shows just about everything you need to know.
I've never done repairs on a VCR before, every deck I've had previously just worked...

[redk9258]

Have you tried other tapes? Are the heads clean?

[luRaichu]

Originally Posted by redk9258

Have you tried other tapes? Are the heads clean?

I tried a commercially duplicated tape, sound was better but the noise faded in and out & picture had light/dim bands.
I cleaned heads with paper & alcohol. Noticed some dark residue in one of the grooves on the drum

[redk9258]

Is there a tracking control? Do you have an oscilloscope?

[luRaichu]

I'll have to look. I own a Tektronix 422, 15 MHz scope