The right way to do things…… and the wrong way


In repairing pinballs, there are some rules you want to follow and one of them is…… DO NOT try to modify the coils. Here is an example on a Pinbot of what can happen if one were to make their own diode bridge on a flipper coil. As you can see the coil clearly is shot and this was due to the fact it only had one diode across the terminals. This is a HUGE mistake since the coil actually needs two. You can see the damage it also did to the end of stroke switch which actually has melted plastic from the coil on it. Fortunately, the fuse that cuts off power to the flippers when something bad happens did its job and blew which saved countless other components. Pin-bot will be back in action, but this could have been a very costly repair.

 

One cooked coil!

One cooked coil!

 

 

The culprit, one diode, where there should be two. The top lug has actually burned off the wire to the windings.

The culprit, one diode, where there should be two. The top lug has actually burned off the wire to the windings.

 

The End of stroke switch with melted plastic from the coil.

The End of stroke switch with melted plastic from the coil.

 

 

this thing got hot!

This thing got hot! You can see that it burned through the inner plastic AND the coil sleeve!

 

what they normally look like.

What they normally look like inside.

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