But I didn't find any.
Watch Youtubes for inspiration.
This is a Magnavox zv450mw8 VCR/DVD Recorder. I got this machine asis on eBay. The seller told me about the VCR side of the house. The VCR side needs new belts, springs, felt pads and a dab of white grease. The takeup reel is dragging. The DVD side, the DVD side is spouse to play DVD's just fine. He tested it just before boxing it up. When I got it and plugged it in, the DVD tray won't open. The display says "opening". The tray does nothing and the device turns off after about 2 seconds. I opened up the DVD deck and the motor that turns the gears is not moving. I checked the red and black wires coming out of the motor at the pc board with my VOM. There is no voltage. So now what?
PS: If I could find the service manual then I could fix it.