Quick Draw
Gottlieb, 1975Believe it or not I have been solving many problems by myself so this is more just a pinball general question. When I hold the flipper button there is an audible buzz. I don't remember hearing it on other machines. Is this abnormal? It looks like the EOS switches are adjusted but haven't cleaned them. I'm just curious if I'm trying to solve a phantom problem c
Pretty normal on EM games. You can reduce the noise by having all your flipper mechs tight and smooth. As they wear, they make more noise when the hold side of the coil kicks in. Make sure your EOS switches are opening though. If they don't That loud buzz will turn into smoke!
Cool, thanks. Just wanted to make sure. I could imagine them burning out every time I hit the flippers. May rebuild eventually but they are fairly peppy still.
Can anyone tell me, off hand, if the double bonus (or any 4th or 5th ball related bonuses) is controlled by the regular bonus relay? There is a 5th ball double bonus that isn't working and I don't see where it is activated. Maybe player unit?
Quoted from ReallifePin:Believe it or not I have been solving many problems by myself so this is more just a pinball general question. When I hold the flipper button there is an audible buzz. I don't remember hearing it on other machines. Is this abnormal? It looks like the EOS switches are adjusted but haven't cleaned them. I'm just curious if I'm trying to solve a phantom problem c
My experience with a buzzing flipper when held in is that the end of the plunger and the face of the stop are not parallel to each other. This causes the plunger to vibrate within the tolerance of the coil sleeve against the stop.
A new plunger and stop is a good way to eliminate this but even then you have to be sure the stop bracket is installed so the stop is parallel to the plunger end.
A simple solution I have found that can improve the condition is to disassemble the plunger and stop out of the game and take a hard file to the face/end of each. You are basically trying to square each off as well as make the end more consistent.
Mike O.
Team-EM
Thought I'd post a couple of pics now that it's up and running. Thanks again for all of your help. You got one more old, forgotten machine back running. As you can see there is no red or yellow, really, on the bg
These aren't the best detail but it's what I have on my phone. Plus the low lights hide a lot! 
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Salt Lake City, UT