Sharpimage monitor not syncing

ArcadeCited

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I have a sharpimage monitor that I put in my Hydro Thunder since the original monitor died and I wanted to play Hydro Thunder still, the game does work and boot up, but the monitor is not syncing, I tried adjusting it with the adjustment board, no success although it does get more visible, the monitor is a medium res sharp image monitor, the same as the original monitor, I pulled the other sharp image monitor from my Cruis'n Exotica, so I'm not sure what's the problem here, the original Hydro Thunder monitor is a SharpImage SI-727R-DS, this one broke and displays an almost emboss looking picture, the other one I pulled from Cruis'n Exotica, which is currently in Hydro Thunder and not syncing, is a Sharpimage KT-2602M. I sadly don't have any photos as I am in the process of moving, but if any expert may know what the problem is, any help is appreciated.
 
I ran into this a few years ago, see here for the pinout. Basically the label is incorrect:


So 2 years later I finally sat down to fix this for good. I have swapped this monitor out a while ago and have it on the bench. Recap and checked the resolution select board. Definitely at least one cold joint. Hooked it back up and no happy still. Almost threw my hands up and ran across Ken Layton's manual. Turns out the pin marked sync isn't sync:

View attachment 555432

tried it again, and we have a beautiful picture. RIP Ken, you're still helping people from above!

View attachment 555433
 
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