Pulled this one out of storage to watch old vacation tapes, ski videos, etc. See white lines going across the display (like the on-screen display is malfunctioning). Looking through the service manual quickly, it looks like an issue with the OSD board, or power supply. So over the next few weeks I'll be rebuilding this vintage 28lb, $1k+ JVC circa 1987.
Here's what I've done to the unit so far:
JVC HR-S7000U Service Log
November 1987 - Purchased by my Father @ Crazy Eddie
12/13/1996 - AC (Mains) Fuse Replaced, back then I was already into electronics!
02/09/2002 - Video Head replaced (Upper Cylinder), $99
02/30/2006 - Belts, Idler Tire, Pinch Roller replaced.
Right now I am going to go through the power supply and replace the electrolytic caps.
Here are some pics to show what A/V gear was like back in the 1980s. Excellent build quality.
This thing is HEAVY! Drop this on someone and it will really hurt, haha.