(Topic ID: 113695)

WPT: Coil staying energized

By Det_Deckard

9 years ago



Topic Stats

  • 4 posts
  • 4 Pinsiders participating
  • Latest reply 9 years ago by ts4z
  • No one calls this topic a favorite

You

Linked Games

You're currently viewing posts by Pinsider ts4z.
Click here to go back to viewing the entire thread.

#4 9 years ago
Quoted from Det_Deckard:

I am half tempted to have both outputs for the two sets of pop targets to operate off of one pull down transistor. I think that 95% of the time they both operate at the same time and have them either side pushed up when it already is up I doubt would cause problems.

That is not advised. A transistor can only sink so much current; surprising it by having it drive two coils will probably fry it. Plus, the game will get confused as to which drop targets are up when it goes to try and reset them.

Replacing the transistor is not hard for anyone who works on circuit boards. Coil test will tell you which one is bad, as will the manual. I looked since I had it handy, it's Q7. It's an easy replacement. I guess you might also have to replace the diode, so add another two cents. Should cost about $2 in parts.

Promoted items from Pinside Marketplace and Pinside Shops!
$ 20.00
Playfield - Decals
Pinball Invasion
 
$ 38.00
Boards
PinballReplacementParts
 
$ 1.00
Pinball Machine
Pinball Alley
 
From: $ 10.00
Cabinet - Sound/Speakers
arcade-cabinets.com
 
$ 6.00
Playfield - Protection
Apron Envy
 
3,800
Machine - For Sale
Warwick, RI
$ 17.00
Cabinet - Decals
Nordic Pinball Supply
 
$ 100.00
Cabinet - Shooter Rods
Super Skill Shot Shop
 
From: $ 40.00
Lighting - Interactive
Professor Pinball
 
Trade
$ 99.00
Boards
PinballReplacementParts
 
Great pinball charity
Pinball Edu

You're currently viewing posts by Pinsider ts4z.
Click here to go back to viewing the entire thread.

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!


This page was printed from https://pinside.com/pinball/forum/topic/wpt-coil-staying-energized?tu=ts4z and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.