Currently I have a problem with my ST32 based screen running PIN2DMD firmware. In total I have had 5 or 6 PIN2DMD screens, 4 of which made by PinballSP. Two versions with the big power supply on the back (2016 black edition), and two versions with the small power supply (DUALW-version from 2017). The 2016 versions have all worked inside Bally/Williams machines and the 2017 versions inside Capcoms. Recently I sold one of the Capcoms and I wanted to use the 2017 display in my Scared Stiff (WPC-95). Unfortunately, I can't get it to work.
When I switch on the pin and the display at the same time, no boot up logo appears and the screen stays black afterwards. A few bright dots might flash upon power cycle, but that's all. No DATA/ERR lights flashing. If I turn on the screen before the pin (or, switch on the pin with the signal cable detached), the PIN2DMD screen shows, indicating the fw version and BALLY/WILLIAMS. If I then connect the signal cable, it all works fine (DATA light flashes). So it seems the display doesn't boot when there is a DMD signal present (but only on WPC...).
Here's what I already tried:
1. Switch the 2017 displays between Capcom and Scared Stiff, the problem stays within the Scared Stiff machine (and the other display works fine in the Capcom)
2. Tried firmware versions from 2.36, 2.41, 2.68 and 3.05 (most recent), makes no difference
3. Tried to use the 2017 display in my Theatre of Magic (WPC-S), also does not work
4. Switch between external outlet (230V) and internal outlet (110V taken from J605)
5. Fiddle around with the Signal Enhancer settings
6. Added an extra ground lead from the braid of the pin to one of the GND connectors of the screen
7. Connected the pin to a grounded wall outlet
So far I can only conclude the 2017 versions do not work in WPC-S/WPC-95 machines, where the 2016 versions work ok.
Any ideas/suggestions what else I might try?