My upper flipper on strange science was fine then stuck on during game play play.

Coil was super hot melted coil sleeve

Checked all EOS switches all looked good.

Replaced with a new coil worked fine for 1 day then same thing.

What could be causing the coil to lock on? Board issue?

The EOS does have a capacitor.

Can it be ran without?
(Sorry I’m new to 6803 and still learning i had a roll over switch capacitor go bad. i cut it off and the switch has been working fine ever since.)

I ordered capacitors for this game but i received very very small ones to small for the switched however it was the same part number.

Anyone know a good site to buy the correct capacitors? I’ve tried looking them up on pinball life and Marco with no luck.

So that’s the strange part. It doesn’t lock up when powering on.

I can play a game everything works then all of a sudden you look up and the top flipper is locked on. I power off immediately. Coil can’t be locked on for more then 15 seconds. Although it’s enough that it melts the coil sleeve.

I take off the glass move the flipper down by hand and it moves back. Turn the game on and the flipper doesn’t lock on or do anything strange. It stays down i try to flip with buttons and it will jump slightly but not all the way because of the melted coil sleeve stopping movement

Thinking about it now maybe when i start a game the coil gets hotter and hotter with each flip and eventually gets hot enough to melt the coil stop and hold the flipper in the up position not electronically but the melted coil stop not allowing free movement.

If that’s the case maybe it’s not locking but just over heating over time. Maybe that bad cap is sending constant voltage.

I can try to remove the old coil sleeve and cut off the cap and see how it works.

I only have 1 more new coil so i want to try to find the issue before messing up the last coil i have.

The new coil came with new diodes

I checked all the switches and EOS switches I’m guessing it must be that cap I’m going to cut it off and see if i have any luck.

Thanks

I must come clean! I believe the flipper wiring was incorrect.

I purchased the game from a well known operator and thought there was no way the wiring was incorrect however it was. I also replaced the EOS switch with a new switch and i cut the capacitor on the EOS.

I’ll attach a photo of how it was wired before.
Game seems to be good now.

On to the next issue

I noticed that with these 6803 games seem to have sticky flippers at times. The nylon sleeve is new along with the coil sleeve and spring however i still get the flipper to stick in the up position at times. Anyone have a good fix for this? The plastic bushing looks to be in good shape as well.

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No not dragging.

I did swap to the newer style Williams flipper bats but still using the 6803 plungers and such.

Game will eventually make it on route so want to use the newer style flipper bats.

Plunger and coil stop looked great however i did notice this small bur.

I replaced with a new plunger we will see if it fixes the issue.

Thank you for all your help!

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My strange science upper flipper stopped working today. Games on location so i was t able to dive into it. Other flippers work great any idea what it could be?

Does the upper flipper run it’s own fuse?

Easy fix it was a wire that came loose from the coil. Thank you for your help i knew i had a short time window to fix it and was wondering if there was something else crazy about these systems i didn’t know. Appreciate it!