Quoted from AtTheArcade:The T-Rex partially works. It chomps and moves up and down just fine but it stutters and hangs up when moving left and right. It was running an old ROM code when I bought it and I was hopeful that a new ROM code would fix the issue as the update, as I understand it, dealt with the left and right movement of the T-Rex. Unfortunately, the ROM update didn't fix it. I'm still learning how to work on machines and the little bit of reading I did on fixing the T-Rex said to me that I'd better leave it alone. And the DMD only has one line out. I'm not sure if there's a way to fix that without replacing the whole DMD but it didn't bother me. The mods I did were simple mods and didn't require anything but time so that's why I focused more on them. The game is really dark in general and I was more interested in making it brighter than anything else.
My T-rex was having issues with the left - right motion too. I was worried it was the motor.... In test mode, it made some noise and no (or next to no) motion. I took the T-rex off the machine, and was hoping that it was just a set screw (similar to the set screw on a flipper bat being loose). I was lucky enough that it was the set screw, which I tightened up (and quite a few other screwins) and it was working flawless afterwards. I believe the motor is ~ $70, but if you're lucky enough to just have to tighten up some screws, then it's no real problem. Don't expect peeps to pay top $ for a machine that isn't working properly. I would expect buyer to offer $300 less than asking price due to the DMD and the T-Rex issue.
