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Scared Stiff Sometimes exits terror from the crate MB early

s000m

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Apr 12, 2021
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Swindon
So I'm not sure if the issue always existed or something I introduced during the playfield swap.

Randomly the game won't stay in Terror from the crate multi-ball.

The ball goes into the crate, the game starts the mode cycling through the animations and quips. The second ball is launched and the game exits the mode. The music goes back to normal 1 ball play. Though with 2 balls on the playfield.

The crate then starts locked and needs bashes to open again.

The opto inside the crate seems ok. I run the crate test and the opto triggers as the ball passes by. The opto in the vuk also works fine and spits the ball back out.

What could cause it to glitch out like this?

Have I mis-aligned the opto when mounting it to playfield or perhaps a flakey opto? Switch edge doesn't show any flicker.

Or am I looking in the wrong spot, maybe back on the opto board?

Any help appreciated.
 
Trough opto problem or opto board problem. Put it in switch test and leave for 20 to 30 mins and see if any optos drop out. If none do, then try thumping the playfield and see if the vibration causes any issues.
 
Trough opto problem or opto board problem. Put it in switch test and leave for 20 to 30 mins and see if any optos drop out. If none do, then try thumping the playfield and see if the vibration causes any issues.
Good call. Judge Dredd did this.

I got out some isopropyl alcohol and q tips.

So far it hasn't raised its ugly head.
 
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