I have some problems with a friend's Luxor VR3721LX (same mech. as the
Sanyo VHR4100)
I have no service info for it.
He uses it as a tuner for his TV, the problem is that the picture
doesn't sync (the scart is used)
There also seems to be a loose belt from the loading motor (nearly
hidden under a plastic cover), but the tape part is not of much importance.
At first I thought the problems were caused by bad electrolytics in the
power supply, but it seems the voltages are fine (one +65V has 10 vpp
ripple, but it doesn't get better with another cap in parallel)
Any good tips are welcome.

Stein
Trondheim, Norway