Good evening everyone just got 3 replacement pop bumper driver boards and 2 of them fixed my pop bumper issues, the 3rd when I pressed the test switch it sparked and fried the trace from pin 2 (ground). The coil in brand new and have checked for proper ground, cross shorts and shorts to ground with no discrepancies noted. I've also checked the connector to their respective spots and all checked fine.

All fuses are good with proper ratings.

Any help would be awesome .

Board has built in diode protection. Shouldn't matter.

It was a replacement from pinrepairparts he did all the work

Yup everything is the same and keyed correctly wonder if I just got a random bad board.

His boards have built in diode protection so it shouldn't matter which wire is on which side of the coil at that point

Here's the Board and link. Desoldered old coil wire for wire as well.

https://pinballreplacementparts.com/collections/circuit-boards/products/new-pop-bumper-board-replaces-gottlieb-machine-part-d-20923

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Hahah nope, blew my mind. Trigger led lights with the spoon switch. Getting 25 volts at the coil as I should be. And 5 everywhere I am as well.

Tag team

Removed a diode off a working coil and with a good replacement board is now causing the coil to lock on instantly and blowing the 2amp fuse

Yea I removed the diodes like his website says I can and nots to working like advertised. Causing coil lock on now.

Here it is, got it from Marco. Replaced 2 out of 3. The one that was working had a weaker pop compared to the originals.

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Give everyone an update, it was a bad diode on the brand new coil. Chris over at pinballreplacementparts.com was excellent and sent me over new boards after it happen.

Would have never thought a new coil would have had a bad diode. $.10 in parts caused 2 days of troubleshooting and $40 in parts. I now have 200 diodes of all sorts to have on hand.