K7900 screen issue

so here is some cool news, went to storage to put a couple of monitors away and to grab another one and found one with a k7900 chassis with a tag saying something about weak green but chassis good, so i will test this later and use it to compare with the one i am having issues with
 
wanted to do a quick update, i got the second monitor on the bench and it had a not saying the chassis was good but the red is weak, but before i powered it up i hooked my tester to the tube and the red and green were bad, tried a clean and balance and a rejuv but the tube is toast, so pour one out for a tube that did its duty

anyway, i took the chassis out, hooked it up to the other tube and turned it on and it worked, connected the tpg and got a image, needs a clean and a recap but it works, tested the blk pot and it worked good as well, no funkiness to the monitor

same chassis but the issue is not there, i will get it cleaned up and recapped and see if the issue shows up and if it does then i will look into that, if not then its something else

bonus question would a failing ic1 cause the issue i am having with the other chassis?
 
I took it to the arcade I am helping at and hooked it up to X-men street fighter and it looks really good better than the 25inch monitor that's in it lol

But there is some spots during the attract screen where it is blurry but after it warms up a while that goes away

There is also a curve on the side of the monitor and I just couldn't get it dialed in all the way

That tells me there is still an issue what that issue is I do not know

I think red is too high. the quick and easy test is turn contrast down and that red smear on the side should go away.

I've documented how to white balance many times and I'm not retyping it again, you can do a search to find my instructions.
 
I think red is too high. the quick and easy test is turn contrast down and that red smear on the side should go away.

I've documented how to white balance many times and I'm not retyping it again, you can do a search to find my instructions.
i never noticed an issue with the red in person, i think it may have been my phone, only issue was some weird issue with one side of the image being pushed in and that whole blurry issue that went away after running for a bit
 
Hard to tell but there is a curve at the top of the image, also I noticed adjusting the blk/brightness pot it seems to mess with the vertical for some odd reason, anyone have any thoughts on that?
 

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Hey everyone, a friend got a galaga recently with screen issues, lucky for him it has a k7900 in it, so I grab one of my rebuilds and put it in and I cannot for the life of me get it adjusted and there also seems to be a strange issue on the right side of the screen, you can see it in the pictures, what would cause this issue? We also notice messing with the brightness or contrast pot makes the screen scroll to the left, I should also mention the fly back is turned up all the up as it was way to dark if it wasn't
 

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uupdate after a bunch of adjustments it looks great! now to just order a cap kit forr the old one and get it working good again
 
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