Tyrone Powers
New member
The DMD on my Data East Rocky and Bullwinkle is non-working (completely blank, shows no signs of life) and I have three questions on trouble shooting:
1. I have voltages at the DMD and Driver boards so they have power at the header pins but, how exact do the voltages need to be on the Driver board and DMD itself? How high and low can / should they be? +/- 10% ok?
2. I am pinning out the 2 ribbon cables but, while I have them off, anything else I should check out?
3. If ribbon cables check out ok, are the specific points on the board set that I should check for voltage. For example, if Point A, B and C check out on the driver under load, then you are likely ok there?
Thanks.
1. I have voltages at the DMD and Driver boards so they have power at the header pins but, how exact do the voltages need to be on the Driver board and DMD itself? How high and low can / should they be? +/- 10% ok?
2. I am pinning out the 2 ribbon cables but, while I have them off, anything else I should check out?
3. If ribbon cables check out ok, are the specific points on the board set that I should check for voltage. For example, if Point A, B and C check out on the driver under load, then you are likely ok there?
Thanks.