(Topic ID: 23306)

BSD Lamp matrix problem, I need help...

By Kcpinballfan

11 years ago


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#7 11 years ago
Quoted from markmon:

This is pretty common. And for whatever reason before LEDs you won't notice it (even though the problem exists).

Yeah, stray voltage may not be enough to lite incandescents but probably enough for LEDs. I think you'l have to check that row of wires to find a short.

#15 11 years ago
Quoted from markmon:

Did you go through the steps I gave you already? My bet is in diode / wiring. I've seen this issue tons of times. I also believe problem with transistor would show up prior to LEDs.

Second that

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