(Topic ID: 262133)

Replacement coil for A-15943 (williams)

By Chicoman

4 years ago

Topic Stats

3 posts
3 Pinsiders participating
Latest reply 4 years ago by Pin_Guy
No one calls this topic a favorite

You

You are not signed in!

Find in topic

Linked Games

Indiana Jones: The Pinball Adventure Williams, 1993

Topic Gallery

View topic image gallery

Recently ordered a replacement coil for A-15943 for an Indiana Jones Pinball Machine. The replacement coil according to several sites is a FL-11753. My question is that new coil the FL-11753 has 2 diodes across the terminals where as the original coil the A-15943 does not have those diodes. I don't want to cause any permanent damage to the machine before connecting it or fry something I'm not supposed to.

Do I just install this new coil with the 2 diodes attached or do I need to remove those diodes before installing this coil? It's for the UP/DOWN post for the mini-playfield.....original part A-15943 which is apparently NO LONGER MADE.....replaced by the FL-11753.

Any help is appreciated.....

The diodes are for something like protection.
Are you sure that the original is not with removed/cut diodes previously?
You can measure (with DMM) and compare both coils so you will know where each wire must go from the original to new one.

You can probably go either way; if you leave them on, be sure that your 50V power connection (GRY-YEL) is connected to the end terminal with the stripped side of the diode or you will break things.

Your game already has an FL-11753 without diodes that's powering the diverter and uses identical circuity on the Fliptronics board. Fore reference, PN FL-11753-1 is the same coil without diodes. This is a fairly low power coil, similar in strength to the coil in a popup target, but you still wouldn't want to drive that for a long period of time which is why Williams is powering this from Flipper 4 on the Fliptronics board.

pasted_image (resized).png

Fill disclosure: I do not own, nor have I ever worked on a Williams IJ.

Promoted items from Pinside Marketplace and Pinside Shops!

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+!

Help – Contact – About Pinside – Support Pinside – Top