T2 left flipper fries coil if held in more than 7-8 seconds. Any ideas what might be the cause? I’ve replaced the coil twice in last two days. The right flipper can Be held in all day.
Thanks
Tom
Sounds like your wiring is not dropping out the high power winding and going to the low power (Hold) winding. Check your EOS wiring, make sure its working properly.
Quoted from Billc479:Sounds like your wiring is not dropping out the high power winding and going to the low power (Hold) winding. Check your EOS wiring, make sure its working properly.
Yes that's almost certainly it. Look for big time GI dimming as well when you hold the flipper in.
This EOS should be closed until you flip, and then it should open. Make sure the tabs aren't bent and wires that shouldn't be aren't touching either.
I had a similar problem on my Whirlwind (pictured) but mine was blowing a fuse instead of a coil. The image below is from an older game, but the principal is the same. Most flipper mechanisms actually run on a dual voltage. They are set up so that there is a strong high voltage current that lifts the flipper when you press the button, and then a lower voltage keeps the coil up once engaged. If you keep the high voltage running too long, one of two things will happen, either the fuse will break (preferred) or your coil will overheat and be ruined (your symptoms).
The machine know the flipper is up when the EOS (end of switch coil) opens. When this happens, the high voltage disengages and a lower voltage enters the coil... enough to keep the flipper raised, but not enough to fry the coil.
The part that you need to check is circled in red in the picture below. There should be solid contact between these when not engaged. Run a dollar bill between these to clean these, as crud can accumulate over time. Even brand new ones must be cleaned as they often have an anti rust coating.
You also want to check that when the flipper is all the way up, the part circled in blue opens the EOS switch to lower the voltage. You can check this by manually lifting the flipper. If it doesn't open, that's your problem. These parts are cheap to replace alone, but can likely just bent back into place if not physically broken.
Thanks again everyone for the quick replies. I just received my replacement coil (including a spare). I changed it out, visually inspected the contacts circled in red in image above. It appears that it was not opening when flipper was engaged. I adjusted it and hopefully that resolves my problem. Unfortunately, I do have a spare coil as I stated earlier but I do not have the ‘balls’ to test it. I will let my guests test it, As they are usually the culprits that forget to not hold down left flipper.
Again, thank you all for teaching a man to fish.
Quoted from tharjus:Thanks again everyone for the quick replies. I just received my replacement coil (including a spare). I changed it out, visually inspected the contacts circled in red in image above. It appears that it was not opening when flipper was engaged. I adjusted it and hopefully that resolves my problem. Unfortunately, I do have a spare coil as I stated earlier but I do not have the ‘balls’ to test it. I will let my guests test it, As they are usually the culprits that forget to not hold down left flipper.
Again, thank you all for teaching a man to fish.
Even if brand new clean the area between the contacts with a paper towel. They are often shipped with an anti rust coating that must be taken off. Good luck!
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