(Topic ID: 127769)

Flipper rebuild question

By setzkor

4 years ago

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  • 6 posts
  • 4 Pinsiders participating
  • Latest reply 4 years ago by setzkor
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#1 4 years ago

Hi Guys, I'm in the middle of a flipper rebuild on Apollo, and have some weakness and buzzing on the right flipper (previously, both were buzzing). The EOS switch adjustment seems fine. Looking at the wiring, I'm about 75% sure that somewhere along the way, the right coil got wired wrong (the one with the orange wire). I believe that I need to switch the orange wire on the right coil to the middle lug. Can someone confirm?

Also, how snug should the coil be between the coil stop, presumably as tight as I can get it in there?


#3 4 years ago

Thanks LTG, how do you think I made it this far Although a re-read did answer my second question, of getting the coil in tight. Before I had just skipped to the EM section.

However, I would still like some confirmation that I read the schematic right and that the long spring on the EOS switch should be wired to the middle lug for BOTH flippers. Currently it's just like that on the on left flipper. My best guess is a previous owner mixed the two up when they put in the new orange wire. All of the pictures (of similar coils) shown in Vid's post seem to indicate that the wiring on the right one is backwards, but before I break out the soldering iron I want to be certain.

#4 4 years ago

This animation will help.


#5 4 years ago

The wiring in the picture you posted appears to have both flippers set up the same. Doesn't mean they are wired correctly but they are wired the same.

1. You need to be sure the EOS is set up across the hold winding and not the power winding. I don't recall of the top of my head which winding is which in a flipper coil, other than there should be a wire gauge difference between the two windings which is visible. A photo of the flipper set up from someone else's example of this game or a similar manufacturer from this era may help. IPDB may be your friend on this.

2. To insure it isn't just your EOS switch jumper the EOS to take it out of the circuit and see if the flipper gets snappy.

#6 4 years ago

Thanks guys for the help, in the end, I needed all the advice. It seems both were miswired at the EOS switch (the return was on the short switch, thus keeping the power coil in circuit full time). Then by the time I was done monkeying around, the EOS switches were a disaster. Eventually I got them adjusted, but I think a new adjuster tool is in my future. All I know is that there was way too much soldering today, and not enough drinking and pinball. But at least it's back together with strong flippers.

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