Need help finding the source of noise interference

[BilboFett]

Attached pics and vid are ANY connection, either VHS or LD input!.
You can still see the interference w/ the TBC, its not pure black. there's movement.
I changed cap cards, and from desktop to laptop, and changed outlets to a different room.
Its still the same.
If its BOTH the VHS player and the Laserdisc player, and ANY cap card.. its not those devices, its the house, imo?
I just need to know WHAT in the house is causing it.
I relocated to a different room, everything off (lights, utils, etc.), using a different laptop, and cap card.
Same interference.
I'm concerned its a whole-house ground loop or bad wiring or something.
Any ideas? Anyone recognize this pattern?







Vid is w/ TBC on. You can still see movement, interference.
w/the TBC plugged in:
Sample:
1) https://we.tl/t-ANurzz8XTb

or

2) https://mega.nz/file/ZQlxQA5L#u0SdJs...shguG7_4HbexgU
(use Chrome to auto-decrypt in the download)

or

3) https://gofile.io/d/Qjs5yC