Bad belts are the cause of many problems, even machines that are not
used too often get their belts ruined by just ageing. The plastic gets
very brittle with age even if taken care of. Recently I found some
belts that were not even used and the plastic had all but turned to
dust.
Funny. Similar thing happened to me recently. Remmeber that when belts
perish they leave steel cables that can damage mech if you keep trying to
operate the machine. If you keep trying to turn the seized picture head
you will also blow the controller card.
I suggest opening the hood up and