Damnit, screwed up another one :-(

wildwest3163

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Jeeze, think Ill retire from tinkering on monitors. Ok, anyone tell me where/what I screwed up?

Im building my jrok multiwilliams, I put in a G07CBO, new deluxe kit installed. The plug on it (6 space below the 3 space plug) starting from the right side is red/green/blue/black, sync on the left plug of the top 3. all I got was a blue screen.

I used a jumper to hook it to my Bad Dudes monitor (K7602) the same way it was hooked on the G07 (1-4 R,G,BL,BLACK and sync on 10) and still got nothing. Then noticed that the wiring on the K7602 has the black at #8 instead of #4

I reversed the jumper, moving the black from where it was on the K7602 (#8) to where the black was on the G07 (#4) and immediately blew the fuse on the G07 board.

NOw I need to replace the blown fuse, but whats my next step after that, what am I missing
 
Couple of things. The numbering you refer to on your 7602 is different from the schematic from Wells gardner. However, if you count 8 (pins) starting at the red, #8 is vertical sync. There may or may not be a space at the real number 8. Number 8 should be a ground but if there is a blank spot, you may have hooked up the sync incorrectly. Definitely should not be hooked up to ground. Take a look at the schematic and see if you follow what I am saying.

Schematic here:

http://www.wellsgardner.com/pdf/Schematics/K7600_39_inch.pdf

Replace fuse on G07, move black wire back to where it was originally in harness. Make sure your 7602 monitor works fine. If so, leave it alone and leave the harness alone. Check your G07 monitor according to the Fromm flow chart. Search the forum, you'll find it. You can join Randy's site and get access to all the material you could need for a mere $40 I think. If all you are getting is a blue screen, then either you don't have your MW board hooked up properly, you have a stuck blue transistor or you screwed something else up on the monitor. Do you hear the game play blind? If your known good Bad Dudes game did not display on the G07, you definitely have issues with your monitor not your MW game board.

Finally, I'm not sure about the JROK board but Williams games are positive sync (IIRC) so you would not be using the sync wires at the top connector. (those are negative) Instead, you would continue on the lower connector (the big one) on the G07 and go L to R RGB BLK (gnd) Vert sync, Horiz sync. You MUST check JROK's literature to see wha his sync output is. Since he follows the Williams stuff pretty closely, I imagine it is still positive sync.

Hopefully i am correct here. If not, will somebody please point out my errors.
 
Well, first off, for the G07 you'll need sync on both #2 and #3 of the 3-pin connector.

If displaying it on the K7000, then sync on pin #10 is fine.

Other than that, i don't see what you're talking about with regards to moving a jumper. If you were trying to display the JROK board image on the K7000 (using the cable that normally plugs into the G07 and plugging it into the K7000), then there should be no reason a fuse should blow on the G07.

And if you got a blue screen on both monitors, then I'd assume a problem with the JROK board, or in your wiring from the harness...
 
Couple of things. The numbering you refer to on your 7602 is different from the schematic from Wells gardner. However, if you count 8 (pins) starting at the red, #8 is vertical sync. There may or may not be a space at the real number 8. Number 8 should be a ground but if there is a blank spot, you may have hooked up the sync incorrectly. Definitely should not be hooked up to ground.

Hopefully i am correct here. If not, will somebody please point out my errors.

Well, other than be confusing?

If you count the red pin as pin 1, then pin 8 would be ground. If you start at the the red pin, then count over 8 pins, then that would be negative vertical sync.

Irregardless, there was no need to move the ground wire....
 
Finally, I'm not sure about the JROK board but Williams games are positive sync (IIRC) so you would not be using the sync wires at the top connector. (those are negative) Instead, you would continue on the lower connector (the big one) on the G07 and go L to R RGB BLK (gnd) Vert sync, Horiz sync. You MUST check JROK's literature to see wha his sync output is. Since he follows the Williams stuff pretty closely, I imagine it is still positive sync.

That is possible, although I've never built a JROK version....
 
ok, cause of the blue screen, power supply quit working from one minute to the next. Didnt think to check it because it was working 20 minutes earlier when I put it in:(
sorry about the confusion on the jumper, what I meant is that I ran a set of wires from the plug that comes from the multiwilliams jamma harness to the monitor board on the bad dudes, ran a ground wire between monitor chassis' and turned both games on. Got nothing from the Bad dudes (because of the dead power supply).
I reversed the wires I had run, hooking the bad dudes wiring to the multiwilliams monitor. I had the sync hooked to the left pin on the 3 and the ground on the right pin of the 3 (Just the way several of my other G07s are hooked). This is when I blew the fuse I definitely need to figure where to hook the sync before I try again! :-D
 
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