So I double checked the voltages between tp101 and pin 32 on the game rom without either bill ung board powered up. The reading was 5.09v on both tp101 and pin 32. No loss of voltage between the two.
With one bill ung board powered on, The reading was 5.09v on both tp101 and pin 32. No loss of voltage between the two.
With both bill ung boards powered on, The readings are unstable, jumping from 5.07 down to the 4.8's on both tp101 and pin 32. Can't determine loss of voltage between the two.
I spoke with bill ung who pinned the issue on the driver board. When I told him Clive rebuilt it and showed him what was done as well as the videos showing the readings told me maybe Clive has a suggestion because he doesn't. Any help would be appreciated. I have went step by step on the wiki and without the boards everything is great. With only one ung board, everything is great. Both boards not so great.
Any help?