Hi All! Has anybody else had problems with the opto board for the jeep? I just got a new opto board in for my jeep (part number 520-8102-00). I put it in and the game started working correctly, but only lasted about 5 games and now it seems this board is dead also. I am at wit's end. I ordered two, so I have a new one standing by, but I don't want to put it in and wreck that one also if it is a power problem or something of the sorts. This is now the third opto board I have gone through, and to say this is frustrating would be an understatement. How would I go about trouble shooting something like this? Any help would be awesome!!

I am getting 4.5 VDC into the opto board, but I can't find out what that voltage is supposed to be. I can't find that value in the manual.

Could I have just gotten a bad board and I should try my last good one?

Yes, that is correct. I installed the new one yesterday and performed the switch test and it work perfectly. It took me 6 weeks to get one, so I ordered two. I cleaned the playfield, closed her up and played about 5 games and I noticed it was not working anymore. I ran the switch test again, and I does not "make" the switch on either side. That is about all I have done for trouble shooting. Thanks guys for the help! Any suggestions?

Thanks for that! I couldnt find that in my manual. I must have missed it.

OK, like an idiot, I put that last good opto board in and I watched it closely this time. It worked through the first T-Rex mode, then quit working again. I think that might be a clue to the issues I am having. I must be getting too much power (over volting or over amping) when its in T-Rex mode or when it goes in to T-Rex mode if that makes any sense. It's past my warranty period and I don't think anyone around here (Southern Minnesota) can trouble shoot this. Will stern tech support help with this if it is out of warranty. My distributer is in California so I don't think I will get much help there.

I am going to try that now, Is the node 9 board under the playfield or behind back glass? Thanks!

I found Node 9. I unseated the cable (CN9) and reseated. Nothing. I also wiggled both ends of the cable as I moved the jeep from side to side to activate opto. Nothing. I also ran a continuity test on the cable itself and it checked out. I.am.without.hope. LOL I wished I knew how to check and see if the opto board was indeed "blown". I have, what I think, is 3 bad ones now. I have no tech alerts and the node check turns up nothing in the menu.

No, I have not. I dont have a good opto board now, so I don't even think I can get into T Rex mode without a good one to test that unfortunately. Thanks guys for all the suggestions. Keep them coming please

Thank you, I will try this soon. I appreciate you taking the time for such a detailed troubleshoot. I dont think I can replicate a trex mode without a working board however but I will get on this soon. Thanks Mark!