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Dirty Harry Gun working intermittently


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Have had Dirty Harry for a while, and the gun would intermittently work (ie: launch the ball) - it was good 95% of the time, and i would go into test mode and it would always work - checked and replaced optos, no difference, checked board and plug connections, fuses - all good.

 

I eventually had a really good wriggle of the wires going from the gun down into the playfield, and it stopped working for good. So i had finally isolated (and worsened!) the issue. There are about 6 wires that are all protected in heatshrink, so i stripped all the heatshrink back, and there was a wire that kinked over time, and finally broke through. Soldered up, new heatshrink and all good!

 

IMG_5889.thumb.jpg.66bf0974ddff272986c9d7b1d36deb62.jpg

 

I've seen a few other similar posts on various forums, but no resolutions - so hopefully this might point people in the right directions

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