I recently got a WPT in a trade and it has a couple of issues I am working. One I think I have figured out but wanted to double check my logic and get help sourcing a small resistor.
I am missing an entire column of lights (IC-U15)
and after tracing the wires found that one of the light sockets was broken and dangling loose behind the back board of the playfield and could have easily shorted (I replaced it). I then measured the U15 transistor and it measured weird so I bought a new one. However after reinstalling it still didn't work. I then started checking other items and found one of the tiny resistors connected to U15 wasn't registering (0 ohms) but the similar one on U17 was measuring 47 ohms. So I think I have a bad resistor but wanted to double check my logic.
However, I can't for the life of me find a replacement. I know the part number and looked on Digikey, Great Plains, google and some other places and can't seem to locate one. Can someone help me source this?
Also, one smaller issue I am curious about. I am getting a service error to check switch 1 and 2 but in they manual they are listed as unused? I am just wondering if this is indicative of some other kind of fault or just buggy code.