before you check anything, here is a great video that explains the switch matrix...
This video explains this in more detail but can be confusing for some folks:
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Quoted from Toine79:In my restoration I changed all three pop bumper led holders which are connected to an dots.
Could this cause the problems because I maybe wired them incorrectly?
Pop bumpers do work normal in switch test though.
I would say yes, seems like something is wired wrong someplace
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