These are my voltages, 67v,0v,5v,ground,0,-86v, and -110v. It looks like I'm missing 12v. Please lead me to my next step. Thanks!

This is a stern rollercoaster tycoon made in 2002. It has vishay DMD. Power relay board 520-5055-00. Stern DMD driver board 520-5055-00. When I turn on the machine the game boots, the DMD boots correctly and it shows the intro screen which is perfect. No lines out etc. After about five seconds the entire screen goes blank. It never comes back on. I checked all the transistors on the relay board that provides power to the dmd and none gave any weird values. Thank you for the help!

I've got this now. What next?

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Back to this problem again. I had a few other repairs. LED 201 is not flashing. I have not reseated the eprom yet. Now I get nothing from the screen, not even the few seconds it worked before. At the DMD controller board I have no 12volt supply. My pin 1 and 2 are also 114/84. Ive been trying to get the 12volt back. I tried the step by step instructions in pinwiki and replaced the 74hct273N but that did not help. Thanks kbliznick for your help.

Its a Vishay display. Yes I have 5 volts on the controller board. I resoldered the 2 pin today, it wasn't loose but I figured why not. When I first tried this, I had perfect data for 5 seconds on the screen, then it would disappear, now I have nothing, followed by nothing.

voltages are -114, -84, 0,0,0,5,67.

reseating ROM on the DMD controller board made no change.

I had the ribbon connector backwards on the DMD controller board. You were correct kbliznick that I created a new problem. I swapped out a new CPU board and fixed that ribbon cable and it now works. It looks like the chip on the U201 on the CPU board needs to be replaced. Every now and then I just have to sit back and look at all of the tests I've ran, what I have swapped and deduce where my problem lies. Thanks for all of the help!