When I run a single lamp test A few lights light up instead of one.checked all the wiring and plugs still nothing the driver board and CPU board are brand-new I had this issue with the Old boards installed to. All general lighting and flashers work and test fine. Thanks for any input

All single test ones

If I hit mode start that one lights in and left arrow and One yellow on the mini play field and top I and Lock light

If I had hands of fate left arrow and the N and different yellow on mini play field .as I hit different ones each letter on the Indy letter change light up

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A couple stay on all the time for each one mostly the same ones but the INDy letters changeand the yellows on the mini Plainfield.The scattered all over the damn place no rhyme or reason

Not one in the single test lights up single everyone has additional lights

Thanks i got it ended up being 2 bad diodes on the arrow lights.