(Topic ID: 262681)

Whirlwind help needed pls. - cellar coil not firing

By Bc3

3 months ago

Topic Stats

  • 7 posts
  • 5 Pinsiders participating
  • Latest reply 3 months ago by Jmckune
  • No one calls this topic a favorite


Linked Games

Topic Gallery

There have been 5 images uploaded to this topic. (View topic image gallery).

7F3AE2E9-E594-4ED5-BBFB-D5429067CFD9 (resized).jpeg
2BB87CDF-CD7A-4C45-807C-2436A20E0118 (resized).jpeg
DB7ECA25-6AFD-42A6-AA98-7B63C84F3167 (resized).jpeg
3E75EB97-3E1B-4DC6-8B0B-16789CA6660B (resized).jpeg
23523711-C893-41AA-995D-6D9063722403 (resized).jpeg

#1 3 months ago

Thanks in advance

This is a new to me game that had duct tape covering both cellar entrances. Coil moves freely, switches both work and 50v is présent but up kick coil doesn’t fire in test mode. It appears that the aux board location is Q7.

Where I’m lost is is this most likely a connection issue, a transistor or a signal issue due to cpu?

I’m not sure where to turn next.. so far I’ve found duct tape, silver hvac tape, rubber bands used as return springs, brown extension cord wire tied into the transformer and a ground braid that i can’t see where it came off of.

I could use some help please before i place my reorder for more high speed bubble gum and thumb tacks for my necessary repairs...

2BB87CDF-CD7A-4C45-807C-2436A20E0118 (resized).jpeg7F3AE2E9-E594-4ED5-BBFB-D5429067CFD9 (resized).jpegDB7ECA25-6AFD-42A6-AA98-7B63C84F3167 (resized).jpeg3E75EB97-3E1B-4DC6-8B0B-16789CA6660B (resized).jpeg23523711-C893-41AA-995D-6D9063722403 (resized).jpeg
#2 3 months ago

Is solder connection good on the coil? That could cause it not to fire if one or more of the terminals has a bad connection.

#3 3 months ago

I will resolder and see...but, you know ..they “look” good..lol

#4 3 months ago

Most likely It's Q7. But before, jump the coil to see if it fires. If no,t check your continuity from Q7 to the board connector.

#5 3 months ago

Make sure to post those hacks/repairs in the worst hacks/repairs thread.

#6 3 months ago

Too bad you aren't closer. This would make a fun communal project.

#7 3 months ago

Any updates on this, can you get the coil to fire if you jump it?
If not you need to replace the coil as there’s likely a break somewhere in the winding, if you can, as said above check the Q7 transistor, but as you said in the WW thread you have 48v present at the coil so that should be good.
Now that I’m thinking about it that could be why it stopped working in the first place, if you go into the solenoid test does the voltage drop to 0 when the coil is supposed to fire or stay at 48. If the transistor is bad it could have locked the coil to on and overheated it causing it to partially melt until it stopped functioning. If that’s the case you’ll need both a new transistor and coil.

Promoted items from the Pinside Marketplace
$ 259.95
Lighting - Led
Pin Stadium Pinball LEDs
$ 54.99
Cabinet - Shooter Rods
Lighted Pinball Mods
$ 839.00
Flipper Parts
Machine - For Sale
Exton, PA
From: $ 129.10
Cabinet - Sound/Speakers
$ 279.95
Lighting - Led
Pin Stadium Pinball LEDs
From: $ 19.99
Matt's Basement Arcade

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