Tascam Porta One Mini Studio 4 Track Analog Cassette Multi Recorder Easy Fix?

Description

Tascam Porta One Mini Studio 4 Track Analog Cassette Multi Recorder Easy Fix? This is what I know. The unit powers on and reads incoming signal and the vu meters read that signal. The fast forward and reverse seem to work great! The tape door won't close but the tape doesn't rest on it so that's good  The pots seem scratchy, the play button doesn't work for more than a second and comes back up. The tape goes in and the record button flashes then goes off, but one the tape goes in the record light goes off and that needs to stay on to record (the clip that goes on the tape isn't staying where it needs to for recording) when you press on the clip the recording light blinks however. I opened it up and it looks really clean on the inside. The belts all look there. Not sure what the issue is but it seems really easy to get this working again but I'm selling as is for parts cuz I can't seem to figure out the issue.
Rest assured this will be safely packed in a sturdy box with plenty of packing material, thanks for looking and good luck!