HELP needed with NAKAMICHI CR-7A

I just bought a NAKAMICHI CR-7A cassette recorder and it seems to have
problems.

1) When I power it up there no lights on the VU screen panel.
2) When I put a tape in & press PLAY or FF there is some minor
movement but then nothing.
3) When I turn the OUTPUT volumn to Maximum I get buzzing. When I turn
it halfway I get motorboating.

Any help is appreciated.
Terry in Texas