Ah, a thread right up my street!!!
I have the +2A (black one) and it was in a sorry state when I bought it April 2013, managed to fully restore it and works and looks great now.
http://colexions.com/?p=blogshow&b=9214
You may just need to clean the heads and the pinch roller to get things loading up on it. Use a cotton bud and get some of the oxy action kitchen cleaner or the Dettol stuff that is clear and in the spray bottle (nothing that has febreze in it). Put a few drips onto said cotton bud, press play to raise the heads with the door open and give it a clean. Central silver colored head is what reads the tape, left side one blanks the tape and you have the pinch roller on the right. Even though you won't really be using the blanking head still clean it as any filament / brown stuff on it can transfer to tapes that work fine.