(Topic ID: 242220)

Doctor Who: upper left flipper no power


By pinballinreno

20 days ago



Topic Stats

  • 4 posts
  • 1 Pinsider participating
  • Latest reply 9 days ago by pinballinreno
  • No one calls this topic a favorite

You

Linked Games

#1 20 days ago

Hi,

I just got my doctor who and it has some issues.

time expander needs a complete rebuild (ill get to this later)

upper flipper has no power to the coil

I cleaned and fixed most of the loose stuff today but I am not finding an easy solution for this upper left flipper problem.

I ohmed out the fuse 902 and its new.

I have 74v at both ends of the fuse

I have no voltage at the coil lugs

I have no voltage at Q1 and Q2 tip36's

Q3 and Q4 have 74v

J902 has no voltage for pins 1 and 3, the other pins for the other Tip36's have 74v each.

J907 has 74v on the pins.

What other test points are there to isolate this cause?

Is it just a bad Tip36?

#3 20 days ago

I'm going to replace the tip36, 102, coil and diodes.

Shotgun!

1 week later
#4 9 days ago
Quoted from pinballinreno:

I'm going to replace the tip36, 102, coil and diodes.
Shotgun!

that did it, all fixed

Promoted items from the Pinside Marketplace
3,000
Machine - For Sale
Bellefonte, PA
Wanted
Machine - Wanted
Massillon, OH
£ 82.00
$ 45.00
Gameroom - Decorations
Pinball Photos
$ 28.00
3,100
Machine - For Sale
Saint Petersburg, FL
From: $ 19.95
$ 109.99
$ 129.00
Lighting - Led
LED OCD
$ 10.00
Cabinet - Sound/Speakers
Gweem's Mods
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
From: $ 99.99
Cabinet - Other
Lighted Pinball Mods
$ 29.99
Cabinet - Sound/Speakers
Lighted Pinball Mods
$ 29.99
Cabinet - Sound/Speakers
Lighted Pinball Mods
From: $ 19.95
$ 20.00
Electronics
Yorktown Parts and Equip
$ 9.99
Eproms
Matt's Basement Arcade
From: $ 16.95
$ 55.00
Gameroom - Decorations
Pinball Photos
3,100 (OBO)
Machine - For Sale
Golden, CO
$ 40.00
Lighting - Other
Rock Custom Pinball
Great pinball charity
Pinball Edu

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside