Jokerz!
Williams, 1988You're currently viewing posts by Pinsider BulkOfTheSeries.
Click here to go back to viewing the entire thread.
Ok, here's what I have going on.
1. when I start the game, fuse #F1 is blowing on my power aux board. This is 2.5A / 250V MDL UNLESS their marked value is incorrect. Is this correct?
2. When I let the game run without that fuse in there, I'm getting constant clicking of the RLY 1 relay.
Any idea of where to go from here? Thanks.
Update:
Tested transistors on Aux Power board, tested fine. As did BR1 and BR2.
Put in a good fuse and pulled the J11 connector, started the game up. No fuse pop. Fuse stayed good.
Poked around, found a coil that had overheated and melted the sleeve etc. Replaced that with proper coil, fired up, blown fuse again.
Not quite sure where to go from here.
Quoted from Tomass:Maybe a bad diode associated with that coil.
no diodes on these coils in Sys 11b, they mounted them on the Aux Pwr board. (by these I mean the VUK coils).
Waiting on a parts order, gonna fix some other broken things I have and then chase transistors. New coil didnt melt so thats a good sign.
You're currently viewing posts by Pinsider BulkOfTheSeries.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
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/jokerz-issue-at-relay-1-on-power-aux-board?tu=BulkOfTheSeries 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.
Anchorage, AK