Been working on getting my Defender running again. I did this:
1) Booted it up a few times. Worked fine.
2) At some point the video got wonky. . seemed like the game wasn't playing properly (no audio, etc.)
3) Rebooted a few times. . no luck.
4) Installed the Defender harness for a JROK Multi-Williams to see if that works.
5) Booted up fine.
6) Played a game of Defender on the JROK board.
7) Hit player 1 start and player 2 start. . it froze up. Constant video image as if the video backend of the hardware is running but the CPU isn't (maybe).
8) Plugged the JROK into a different harness with a different monitor and a modern jamma-style power supply. . . still working (whew!)
9) Look around back and noticed that the -5 Volt LED wasn't on.
10) Went out an bought the appropriate 1ASB fuses.
11) Swapped out the fuse and booted up the JROK board.
12) Played a game of Stargate.
13) Hit the player 1 start and player 2 start to go back to menu again. . same deal as before. Video is alive but no game loop running.
14) Looked in back. . same -5 Volt LED is off again.
15) Plugged JROK board into the alternate setup again. . works fine.
Any idea what's wrong with the power supply? Should I get a rebuild kit from Bob Roberts and just rebuild it? Anything else I should try?
Thanks!
Gary
1) Booted it up a few times. Worked fine.
2) At some point the video got wonky. . seemed like the game wasn't playing properly (no audio, etc.)
3) Rebooted a few times. . no luck.
4) Installed the Defender harness for a JROK Multi-Williams to see if that works.
5) Booted up fine.
6) Played a game of Defender on the JROK board.
7) Hit player 1 start and player 2 start. . it froze up. Constant video image as if the video backend of the hardware is running but the CPU isn't (maybe).
8) Plugged the JROK into a different harness with a different monitor and a modern jamma-style power supply. . . still working (whew!)
9) Look around back and noticed that the -5 Volt LED wasn't on.
10) Went out an bought the appropriate 1ASB fuses.
11) Swapped out the fuse and booted up the JROK board.
12) Played a game of Stargate.
13) Hit the player 1 start and player 2 start to go back to menu again. . same deal as before. Video is alive but no game loop running.
14) Looked in back. . same -5 Volt LED is off again.
15) Plugged JROK board into the alternate setup again. . works fine.
Any idea what's wrong with the power supply? Should I get a rebuild kit from Bob Roberts and just rebuild it? Anything else I should try?
Thanks!
Gary


