I have a vintage Tron machine and when I fire it up I get multiple RAM and/or ROM errors. Generally, it's D2 and D5 ROM errors but I sometimes get B2 RAM error as well as random D4, D6 and D7 ROM errors. Heres's what I've done:
1) reseated the ROMs and verified that they're all the same version 6-25.
2) checked the voltage at pin one at each of the ROMs and made sure it was 5.0 volts.
3) made sure all the cables were plugged in right. I have SCSI cables.
4) made sure the orange wire voltage is at 12.9 volts.
5) I did the ROM dip switch test on the sound board and got a glowing LED with no flashes.
6) the purple wire voltage is 4.7
7) the gray wire voltage is 4.2
8) the dip switches are correctly set
9) trying to get the board to boot so only the power cable and video out are plugged in along with all the SCSI cables
10) ROMs at G3 and G4 are getting 5.0v at pin 1 as are ROMs on the video generator board
11) there is a Peter Chou switching power supply installed in this game but the original connectors were changed out
12) the game worked when it was shipped from CA.
Any help would be greatly appreciated! Generally the boot is accompanied with a lot of screen garbage as shown in the photos.
1) reseated the ROMs and verified that they're all the same version 6-25.
2) checked the voltage at pin one at each of the ROMs and made sure it was 5.0 volts.
3) made sure all the cables were plugged in right. I have SCSI cables.
4) made sure the orange wire voltage is at 12.9 volts.
5) I did the ROM dip switch test on the sound board and got a glowing LED with no flashes.
6) the purple wire voltage is 4.7
7) the gray wire voltage is 4.2
8) the dip switches are correctly set
9) trying to get the board to boot so only the power cable and video out are plugged in along with all the SCSI cables
10) ROMs at G3 and G4 are getting 5.0v at pin 1 as are ROMs on the video generator board
11) there is a Peter Chou switching power supply installed in this game but the original connectors were changed out
12) the game worked when it was shipped from CA.
Any help would be greatly appreciated! Generally the boot is accompanied with a lot of screen garbage as shown in the photos.
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