Spindles don't move anymore

The usual thing happened... tape stopped playing, machine turned off, turned machine back on and it ejected tape with some of it hanging out. Normally I just push tape back in and it corrects itself, but this time it just hung. I couldn't get the machine to release the tape (stuck in down (play) position), so I removed the lid, the front panel and the top bracket. Then I cut the protection piece off the tape cartridge and slid the tape out from the mechanism and thru the front (where I had removed the panel).

I put the machine back together, except for the lid (which I never screw back on anyway). I plugged it in and it went thru the load/unload movements twice. Then I put a tape in and the spindles did not move to grab the tape. It just spun as in fast forward and the take-up reel could not keep up with the feed reel. Note: When I put the tape in I heard a loud noise and suspect something snapped, probably a nylon piece. I uplugged it right away, but it was too late. I need a schematic to figure out what has broken and if it can be fixed.

Thanks