Its one on my short list and just look for normal wpc things and yes check the finger chopper out lol. Also check for topper

No not really just look for wear and damage like u wld on any pin . Just make sure everything works and keep the pin on for as long as u can and play it ,make sure you activate both flippers at once to check for resets .The only thing that really plagues wpc pins are reset issues which are usually fixed pretty easily. Make sure you check for battery corrosion damage also .

For DW:

Aside from checking all switches (lots of optos), flashers you want to make sure the Mini-Playfield is working well. Also, the trapdoor off the left side of the big ramp. WPC games have issues with resets and there's well documented repairs for that.

Mini-Playfield: lots to go wrong with that. In test, you should be able to drive it up and down. All the mushroom buttons work. Dalek Flaps engage and release (inside the chutes of the MPF). Cracked plastic dome on the MPF. Locks/lock ejects.

Playfield: Slings, playfield wear on ball drop, playfield wear coming out of the mini-playfield. Does it have lightning flippers or regular 3" bats (stock is lightning flips).

Ramps: Especially the front edge of the right ramp. Who-Mobile covers.

Topper: Plastic dome over the top and mini-Dalek in the dome w/eye stalk. These are unobtainum and rarely are on the market. Possibly there s a moving Dalek motor in the topper. Test 15 will allow you to put it through the paces.

Cab: the ink fades, especially the red.

Repro items available: Alternate backglass images, plastic dome on MPF, MPF itself, ramps.

Mods: Moving topper (hard to find these days), Color DMD (totally worth it), Cliffy protectors for the MPF, Cliffy for the main playfield in front of the MPF. Cliffy Ramp protector (critical), Cliffy shooter lane protector. Tardis toy on playfield can be swapped out for a different toy but you need to make that yourself (plenty of doc). There's a cool Who-mobile replacement coming... can't wait. Decals for head/cab are available. Sound upgrades: expensive custom speakers or cheaper diy speakers.

I'm sure I left out a lot, but others will decorate the thread.

It's a great game!
faz

Test MPF but also play it and put it through the stages...mine acted different in test mode than in actual play.

Also check the quality of the playfield surface. Dr. Whos seem to have issues with the Diamond Plate chipping around inserts and also with planking in the top layers of the wood. It would be nice to get a playfield with a nice, smooth playing surface. However, that may be hard to find unless you're paying more of a premium for a really nice one.

Good luck! It took me 4-5 months to find one around me. Besides the MPF and trap door, check the ramps closely for any cracks. Almost all DW that I've seen have cab fade, so don't let that discourage you.