(Topic ID: 272184)

Black Knight upper flippers buzzing, but not flipping

By dcerny

3 years ago



Topic Stats

You

Linked Games

Topic Gallery

View topic image gallery

IMG_0832 (resized).jpg

You're currently viewing posts by Pinsider JethroP.
Click here to go back to viewing the entire thread.

#2 3 years ago

Are the coil diodes oriented the same on the old and new pf's? And the end of travel switches are adjusted correctly? Double check the wiring to the upper flipper. Sounds like the power may be feeding the high resistance side of the coil.

#5 3 years ago

With power off, check the resistance across the flipper coil with flipper in the unpowered position, then move the flipper manually to the actuated position (which opens the EOS) and measure the resistance. Report your findings. Just want to confirm the wiring is correct. You should have low resistance on the first reading, and high resistance doing the second reading. I have seen flipper coils manufactured with the diode backwards, and the installer unknowingly wired to the diode correctly, but that left a flipper that didn't work because initial power was applied across the coil over the high resistance windings.

Promoted items from the Pinside Marketplace
From: $ 30.00
Cabinet - Toppers
+CY Universal
Toppers

You're currently viewing posts by Pinsider JethroP.
Click here to go back to viewing the entire thread.

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!


This page was printed from https://pinside.com/pinball/forum/topic/black-knight-upper-flippers-buzzing-but-not-flipping?tu=JethroP and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.