Sounds like a short in a column or row, or perhaps a bad diode controlling one of the lights.
(Topic ID: 110469)
Linked Games
Lord of the Rings
Stern, 2003
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It is probably best to follow Lloyds advice, but I'm not sure what IC stands for. interconnects?
You can get leads in there. I'd check for a short somewhere in that line first. Also, Are their any mods in the game? They can cause similar behavior without a blocking diode.
Quoted from Worstpinballever:How do you test a diode that is crammed into one of these?
bulbdiode.jpg 330 KB
image.jpgQuoted from Worstpinballever:Thanks for the quick replies! I checked the wires coming out of the back box, I didn't see any signs of them being pinched/crushed. The only mods are a topper light, under cab lighting and the eye flasher in the back box. The leads on my multi meter fit into the area but I thought diodes had to be out of the circuit to be tested? Sorry for my ignorance! I suck at electrical stuff!
I'd unplug the mods and see if it makes a difference.
Quoted from Worstpinballever:I think I've narrowed it down to the Q35 and the Q38 transistor(I found they were both shorting when I tested them). Once I had the board out I re-checked the wires under the playfield and the wires that were "crossed" weren't any more. Any thoughts out in Pinside land?
Great work figuring this out!
If there was continuity when plugged into the game, there likely is a short under the playfield. But, replace the transistors while the board is out and see how that helps. Two simultaneous shorted transistors is suspicious.
Quoted from Worstpinballever:I just replaced the transistors and I'm happy to say it fixed the problems! What a relief! Thanks to all for the ideas and support!
Great to hear!
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