I have a fight stick wired to a multi-console Cthulhu where each button's wire is then daisy chained to a DB-15 connector for an arcade supergun. It has served me well for almost a year, but today I realized the Cthulhu is no longer showing any signs of life. It isn't detected by Windows when connected directly to the USB port, nor does it function when using a PS2 or Dreamcast cable through the RJ45 interface.
An important thing I should make mention of is that I had notived very erratic behavior when connecting my stick to a Sega NAOMI through a Capcom JVS adapter before the Cthulhu stopped working (this was through the DB-15 connector mentioned above). Upon hooking my supergun to the DB15 port on the controller, all buttons would appear to be rapidly pressed and depressed when entering the input test menu in the NAOMI BIOS. The button indicators would flash on and off (and all the buttons would be pressed on/off if I played a game) until I pressed the buttons mapped to Start and Select (this resets/bypasses the Cthulu I think?). It would behave without issue after pressing those two buttons.
This happened for several months, and the Cthulhu would function properly if I switched to it after playing on the NAOMI. Now that the Cthulu is dead, this erratic behavior doesn't occur. Could the voltages that were output by the JVS adapter through my daisy-chained setup fry the Cthulhu? It was definitely interfering with something, and the board appears to have minimal circuit protection.
My guess is one of the diodes or the PIC chip were fried resulting in it no longer operating. Any suggestions as to how I should troubleshoot this?
An important thing I should make mention of is that I had notived very erratic behavior when connecting my stick to a Sega NAOMI through a Capcom JVS adapter before the Cthulhu stopped working (this was through the DB-15 connector mentioned above). Upon hooking my supergun to the DB15 port on the controller, all buttons would appear to be rapidly pressed and depressed when entering the input test menu in the NAOMI BIOS. The button indicators would flash on and off (and all the buttons would be pressed on/off if I played a game) until I pressed the buttons mapped to Start and Select (this resets/bypasses the Cthulu I think?). It would behave without issue after pressing those two buttons.
This happened for several months, and the Cthulhu would function properly if I switched to it after playing on the NAOMI. Now that the Cthulu is dead, this erratic behavior doesn't occur. Could the voltages that were output by the JVS adapter through my daisy-chained setup fry the Cthulhu? It was definitely interfering with something, and the board appears to have minimal circuit protection.
My guess is one of the diodes or the PIC chip were fried resulting in it no longer operating. Any suggestions as to how I should troubleshoot this?