I'm looking for "Yes, there's a straightforward fix" or "No, toss it"
responses. I'm not trying to initiate a long, drawn-out discussion full of
wild speculation.

Tapes load, and are wrapped around the drum. But they don't begin playing. Nor
do wind/rewind work.

The capstan is pressed firmly against the pinch roller, but it doesn't turn.
The idler gear (that engages the hubs for playback tension and wind/rewind)
does appear to work, as the hubs briefly "twitch" when the tape is loaded. The
idler gear connects to the capstan -- turning the capstan rotates the idler
gear.

I don't have a service manual.

Thoughts, anyone? Thanks in advance.

"We already know the answers -- we just haven't asked the right questions."
-- Edwin Land