Hi - I have a Pioneer CT-F7171 that I am trying to revive. When I received it, it wouldn't lock into any of the functions, i.e. Play, ffwd, rewind. I'd push the button and it would immediately go back to the stopped state. Sometimes, it might turn for a second when being put into play. I replaced all the belts and tires, and it is still doing the same thing. This sounds similar to this old thread I found: http://audiokarma.org/forums/index.php?threads/pioneer-ct-f7171-automatic-stop-failure.109914/ Are there things I should be checking before looking at components on the circuit board? Are there any switches that may need cleaning?