check my thread to see it any of my steps through my little dilemma helps

- on mine if I disconnected the CN5 plug the game would start up and play the intro just no power to the dmd. If the batteries have been renewed the game will automatically go into a coin start, not a free start so the start button will give a funny ping noise - so may need to open the door and hit the coin switch to put up a credit. But on mine with the CN5 plug not connected you would get the hoff intro etc.
- while the plug is still disconnected check to see if there is the 5 volts at the test point as just to prove the new board is doing it's thing.
- For me because I had intro music but stupid me had the CN5 plug connected upside down the dmd won't work and you get no music, and no light attract mode - so in effect if the dmd is no good or not powered up correctly but connected you won't get any action.
- I got one of those kit dmd leads from pinballlife and sent with the board to Beaky and he said it was poorly pressed in meaning no volts to the dmd - so check that but also check existing power supply cables as well to the dmd.
- check the bridge rectifier 3 and associated fuses in this zone


get back with any findings and we will try to help