I have a Star Trek Premium in which some users have complained that sending a ball through the Warp Ramp registers multiple warps instead of one. I've seen this issue before, and found that the issue was related to a broken wire on one of the Red Matter targets. I re-soldered that wire and the problem went away. Now, I'm getting reports of it happening again. Additionally, I'm getting reports that putting the ball in the left scoop also triggers a Warp Freakout. I don't think it's a coincidence that the left scoop switch is in the same row as the Warp Ramp entrance.

I've investigated all the switches in the game, and nothing is broken or out of the ordinary. Everything looks nice and soldered in, and the switch tests show that none of the switch trigger multiple switches at once, nor is anything stuck closed. The one weird thing I've noticed is that the microswitch that sits inside the left scoop doesn't have a diode attached to it. That is, it doesn't look like it ever had one. Is that normal? I thought every switch in the matrix needed a diode.

Assuming this is normal, what are some other reasons that the game could freak out and award a ton of extra warps when sending a ball through the ramp (or, very rarely, when locking the ball in the left scoop)?

I'm still getting reports of this happening, albeit rarely. Every time I hear about it, I go down and look for broken wires and test the hell out of the switches. Nothing.

I suppose I can take my DMM out and test every single diode under the playfield so see if there's one that's causing the warp ramp to register multiple hits.

Is there anyone that can lend some expertise to this situation? It's obnoxious.