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**Video Poker, Keno, Slots, 21** Gaming machines => WMS Williams Video => Topic started by: Dirtguy on March 19, 2024, 09:38:14 AM

Title: BB2 24V light on backplane not Lit
Post by: Dirtguy on March 19, 2024, 09:38:14 AM

Hi
I am getting No Signal on my screens. The bottom led light of the 5 on the backplane is not lit. I switched power supplies with a known working one, same thing. Now I changed out the backplane, same thing. I checked all the plugs, in tight, anyone know what I should be looking for? I also tried another Next2 Cpu.
                                                                                         Thanks Dan

Title: Re: BB2 24V light on backplane not Lit
Post by: Sunrise Side on March 20, 2024, 05:10:48 AM

I believe there is a separate 24V power supply in the mid section above the MPU .

Title: Re: BB2 24V light on backplane not Lit
Post by: Dirtguy on March 20, 2024, 05:15:35 AM

Thanks, I will check that out next.

Title: Re: BB2 24V light on backplane not Lit
Post by: Stayouttadabunker on March 20, 2024, 05:58:14 AM

Quote from: Sunrise Side on March 20, 2024, 05:10:48 AM

I believe there is a separate 24V power supply in the mid section above the MPU .

You may be thinking of a WMS BB1 Sunrise Side?
The BB2 backplane recieves the 24Vdc from the PSU's J5 header via 4-pin harness with black and blue wiring at J11.
The 4-wire harness has two blue wires carrying 24Vdc each with two black ground wires.