Diamond Lady : gotllieb pop bumber issue

Smart Bomb

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Donor 2014, 2024
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I'm almost at the finish line. (58 sec vid below)

F15 kept blowing on start up which is linked to the rear pop bumper.

The pop bumper board associated (IJI3 i believe is the connector for it) with it had a bad transistor and also i believe an out of spec transistor and the boards resistor layout was slightly different than the other 2 pop bumber boards....so in any case i purchased a new, updated, pop bumper board from Arcadeshop.

I install it, turn game on, F15 does NOT blow, so that's a good sign, but the pop bumper is still not working. The led light on the new pop bumper board is supposed to be off unless the pop bumper is activated....well, it stays illuminated...and bumper is not working.

So to make sure the new board is good i swap connections with middle board (IJI2) and plug IJI2 into new board and IJI3 into middle board....iji2 pop bumper worked flawlessly and the led stayed off unless pop is activated...so the new board works perfect...rear bumper still not working.

So i then swap the connections back and as im putting IJI3 back onto the new board, the pop bumper starts to activate right when i put the beginning of connector onto the pins.....i made a short video of this happening.

So I then decided the connector was the issue..I dont have any spare connectors laying around so as an experiment I decided to solder wires directly to the pins and splice those wires into the existing wires leading into the molex..this would give me a solid connection...it did not work..LED still stays on.

Any suggestions what to look at next?

https://www.youtube.com/watch?v=HBguLNoEPgs
 
First mistake on a Gottlieb machine: NEVER NEVER NEVER plug/unplug any connector while the power is on.

Now to fix your problem. The troublesome pop bumper has a stuck closed spoon switch.
 
First mistake on a Gottlieb machine: NEVER NEVER NEVER plug/unplug any connector while the power is on.

Now to fix your problem. The troublesome pop bumper has a stuck closed spoon switch.

You are the man Ken..thats exactly what it was...i bent one arm slightly back with my leaf switch tool..it fixed it right up.

Thank you.
 
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