Need help on a repair issue. The display was not working correctly, all the pixels would eventually light, but the images and numbers were sporadic. Then the other day, the display was working correctly, I could go thorough the test menu and see what i was doing, but later in the day, the screen starting losing pixels again. I figured that the display kind of works, must be the display board, so I ordered a rottendog DMD089 board. It finally came in today, i put it in and nothing, machine will not turn on. I double checked wires, connectors, etc. The -125VDC test point on the RD board measured -147 V, which is way more then +/- 5% that i would think would be tolerable. I removed the RD board and put the old one back in and now the machine is fine, well it works, still have sporadic display, but it plays. With the old board, all the voltages are fairly close.
Is there anything special to installing a DMD089 board? Do i need to adjust some trim pots for voltage adjustments? I thought it was slap it in and off you go type of thing. I have no clue on which way to proceed.