Quoted from reconsider59:Hoping someone can offer me advice in what to check next: I've got ONE light that won't come on! The "C" of the "P-A-C" left drop targets...
I've replaced the SCR, and as it's the only light out, I'm betting it's not the IC (though I suppose that's a possibility?). Reflowed solder at the pins...checked continuity to it (yep)...
I thought maybe the socket itself was faulty or somehow corroded, but I wired up another 555 socket (sans bracket) and it's not lighting either.
So maybe it is the IC? Not sure how to test those, I have a logic probe, but I still don't know what to do with it, ha.
Any advice welcomed!
...oh, and does anyone know where I could buy replacements of the wedge sockets with the mounting bracket? Neither Pinball Life and Marco seem to have them! I can't seem to figure out the part # for it, either...any leads welcomed. Thanks!
Can you take a picture of the socket you need? There are a few different mounting styles. I have some extras.
What kind of connector do you have on the harness? Is the ones where the wires were just pinched into the back of the connector or will the pin pop out? If it pops out you could temporarily swap with another and if it lights then it is probably something on the lamp board.
Or you still have an open connection. Is the socket connected to the braid? I've seen cold solder joints there. I sold my game so I can't check but some had diodes. I worked on a Grand Slam from that timeframe and three of the lamp sockets had bad diodes. Two wouldn't light and one was stuck on.