(Topic ID: 229027)

Switched Light problem on EBD-LE

By mbeardsley

5 years ago



Topic Stats

You

Linked Games

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

#2 5 years ago

These issues are usually connector related. If the lamps driven by the main lamp board are working, buying another main lamp board isn't going to solve your problems with the Aux lamp driver board.

Make sure the Aux lamp board is getting power, hook up a multimeter (set to DC voltage) with the black lead onto test point TP2 and the red lead onto test point TP1 on the Aux lamp driver board. You should read about 5 volts.
If power is ok, the next single point of failure is the "lamp strobe #2" signal from the MPU board to the Aux lamp board. This is a grey wire from MPU board connector J1 pin 8 to the Aux lamp driver board J1 pin 3. Wiggle both of these connectors with the game in lamp test mode and see if the malfunctioning lamps start working

There are other signals from the MPU board to the Aux lamp board used for selecting lamps, but a bad connection on any of these other signals won't cause all lamps to not work from the Aux lamp driver board.

Promoted items from the Pinside Marketplace
$ 149.95
Boards
Allteksystems
Boards
$ 5.95
Playfield - Protection
The Pinball Scientist
Protection

You're currently viewing posts by Pinsider quench.
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/switched-light-problem-on-ebd-le?tu=quench 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.