Hello All!

I'm relatively new to pinball. I bought my first machine a year ago and sold it recently for Jurassic Park. I know VERY little about working on these things. I did a few mods to my Star Trek Premium but they were all super easy. I was under the playfield of my JP today hooking up two LED strips to the very back to light the "When Dinosaurs Ruled The Earth" sign and light up the back of the playfield. The previous owner already had one green strip back there so I took that one out and replaced it with a white one. I hooked it up exactly like he had it with two alligator clips on the GI (pic attached). I booted the game up just to make sure all was good and the light turned on. So then I hooked the second one up to another GI light on the other side and booted the game up to make sure all was good and both lights turned on. I decided to put the playfield down and play a few games to make sure the strips were placed where I wanted them. I was only watching the back area of the game though and didn't notice until the end of my game that the front half GI lights weren't lighting. The back half, including the strips, were lit just fine, but the front half wasn't working. Being new to repair stuff the only thing I knew to do was to check for loose connections (I didn't see any but maybe I'm missing something) and to check the fuses. I only saw four fuses on the power board. I pulled all four out and checked them on my multimeter and all were fine.

I'm not really sure where to go from here. I do not have a working knowledge of electronics, how to use a multimeter, what to touch and what not to touch on a live machine, etc. There are some repair guys in town that I can call but I know they are going to charge $100 to come out and I figured I'd at least try some more basic troubleshooting before I go that route. I'm interested in learning more about repair stuff since I officially have the pinball bug and plan on owning more late 80's and 90's games that I'm sure will need little things here and there. So what better time to learn then now I guess? If anyone is gracious enough to toss out some ideas, I'd be more than willing to listen. Just keep in mind that I really have no idea what I'm doing and will need some hand holding. I don't want to damage anything or shock myself fooling around in areas I shouldn't be fooling around in. LOL. Thanks in advance!

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Thanks for the reply LTG. It was just a fuse. I originally pulled the fuses on the power supply board and all of those were good but after doing a bit more digging on Pinside I noticed that the board beneath the power supply board also had a row of fuses with the same F1 through F4 identifiers. I pulled those other fuses and sure enough, one was out. Replaced it and I'm back in business. So glad it was an easy fix!