GORF White Screen, No video

[Phetishboy]

Well, tried hooking this machine up to a recapped WG 4600 and still the same. White screen, no video, game plays blind. Time to mail my boards and cage off for repair.

 

[Phetishboy]

Hey, me again. Well, I have had my RGB board tested, all 5 boards in the cage tested, my monitor tested, my edge connectors re-pinned and my wiring harness tested. I still have no video. Mind you, this game worked fine until I tried to fix one of the fraying wires on the larger connector that plugs into the IO board. Since then, even with re-seating, re-pinning, testing, etc, the game will not display video, only audio and a white screen. WTF do I do next? Would a power supply issue affect JUST the video signal? This fucking sucks.

 

[Robotron Jon]

I'd check those pins again.

Once in a while I have this problem with another game and it's always the pins.

 

[mcandrewsoun]

Definately trace the power to the RGB board.. needs + 5 or 12 and -5.

 

[20eyes]

I had the same thing with mine recently white screen no video or audio. Tried different boardsets had the monitor gone over, rebuilt the power supply tried a different power supply all with no change. I was pulling my hair out trying to find the cause problem ended up being bad pins on the RGB card harness. Re pinned the 2 connectors to the RGB card and now its working. I know you said you checked your harness just though I would put that out there.

 

[20eyes]

I actually had another boardset with a solid red screen that ended up being the jumpers.
2 ROM/RAM boards with jumpers set the same way but both boards would only run with one of the sets of large jumpers. The other set gave a solid red screen on both boards. I got both working by mixing the 2 sets of big jumpers and for some reason that got them working. Tested with a meter and both jumpers were identical..

 

[smashedtv]

you did say the pattern board checked out right?.....look for any shorts in that harnass and check for wire to pin continuity...sorry my gorf has frustrated the crap out of me in the past too...i only "fix" it now when its broken....Im holding off on the cap kit just because of that

 

[mr.fixit]

i would take a stab at bad ram boards, there good for it....

 

[Phetishboy]

Hi dudes, this thread is 2 years old. I fixed this long ago. It was the power supply board. BobRob had given me some parts in the rebuild kit that had too short of legs so they weren't making good contact with the traces when I soldered them in. I sold this GORF, fully working, nearly a year ago.