(Topic ID: 252505)

Laser Cue drop target 5 not resetting

By djreddog

4 years ago



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#1 4 years ago

Having an issue with drop target #5. When I first got the game, all drops worked. After about a week or so the coil on drop target #5 burned up. When it burned up, and to prevent other damage, we simply cut the single "grey" wire to the coil. So after several weeks, I finally bought a new coil and replaced it. The coil works, as I confirmed this by running an alligator clip from the ground wire to the single wire lug on the coil and it fires. However, when the game resets all the drops, #5 will not reset. I've doubled checked all wiring and can't seem to find anything wrong that would prevent the target from resetting.

I confirmed that q25 and q24 control the fifth drop target and both tested bad, replaced both of them but drop #5 still doesn't reset.

Also, I hooked a jumper from drop 4 to drop 5, started the game and can confirm the coil works and the target resets.

What else can I look at from here?

#2 4 years ago

Probably whatever IC is up the chain from Q24 is next

#3 4 years ago

Replace IC2 (7408).

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