1) I believe those are optos. You may need to clean them. There is also a piece of paper that blocks light getting to the optos, yours could be damaged. Also make sure the grey nubs that the ball hits aren't sticking...

2) I'd just rebuild the flips, new sleeves, new bushings, new coils stops, etc. You could also just loosen the bat, line it up, then retighten it in line with the inlane guide. From the sounds of the game, I'd probably just do a full rebuild anyhow.

3) Check the gap on the switch under the bumper, adjust it as necessary, compare it to the other 2.

4) Replace the lights, check wiring. Clean sockets.

5) Clean the switch, probably just gummed up

6) Check plunger coil sleeve, also make sure its hitting the ball squarely.

This stuff sounds like it was there BEFORE you got it IMO...

Good luck with the repairs...dig in there and look around, most stuff you can see with your eyes

Did you buy it from a dealer or private?? Just curious...

I sold my Dr Who to a friend for 1500CAN. It's probably worth 1000 on the low end, maybe 2000 for a VERY nice one....but prices vary ALOT depending on 14 different factors...

I just replaced the opto board set for the mushroom targets in mine. There is a guide that faz wrote that details taking out the time expander assembly. Makes it super easy...

Ok not super easy, but with faz's guide it was a simple step by step procedure. I also have taken my fair share of machines apart, so it would be harder for a rookie obviously....