(Topic ID: 120843)

Trizone back box lights out

By Spraynard

4 years ago

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  • 7 posts
  • 2 Pinsiders participating
  • Latest reply 4 years ago by Slim64
  • No one calls this topic a favorite


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#1 4 years ago

None of the CPU controlled lamps in my trizones back box are working (ie the current player lamps, tilt, etc.) there doesnt appear to be any obvious loose wires. Any tips for tracking down the problem? Thanks!image.jpg

#2 4 years ago

If all of the cpu back box lights are out and don't work in test mode, start by checking the connector and also the bundle where it goes into the box for any pinched wires.

Good with dmm? You can test for voltage at the lights with the machine on. That will help tell you if it's a power side problem or a ground side issue.

#3 4 years ago

There doesn't appear to be any pinched wires or problems Ruth the connectors.

I have a DMM, but honestly I'm terrible with it. care to walk me through?

#4 4 years ago

Do you have the schematics?

If not, you can do a manual trace to see which wires go from the bulbs to the board. And the connectors to test.

If you're comfortable checking things with power on, turn on the machine and go into the light test in adjustments. Once there and they are flashing check for power between the sockets and cabinet ground. Should get 6v (I believe ) cycling on and off. If you do then we know the power side is ok

continue to the next step

With the power off, disconnect the connecter at the board and with the DMM check for continuity from each socket to its respective wire in the connecter. This will verify all of the controlled ground wires to the board are good.

If both of these check out then it's a board issue.

Imo, if it's only the back box controlled lights that are out its likely a voltage supply problem.

#5 4 years ago

thanks man! i'll give this a shot when i have a chance.

#6 4 years ago

Well, im reading 6v at the each lamp socket. I also get continuity between the connector and each socket, so no issues there. So it's a board issue? I should mention that it has a new rottendog board in it. The previous owner mentioned that he had the same issue before the new board, so I'm somewhat skeptical that it's a board issue...

#7 4 years ago

I would be too.

6v at the sockets means you are good on the power side.

if you have continuity on the ground side from the sockets to the board/connection then I can't see it being anything else then a board issue.

If you can get schematics that would be great.

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