Monitor scrambled and picture upside down?

[GCS2000]

I'm talking about the black wire that connects to the video input connector between the blue and yellow wires. I see it goes up there, but can't see if it's connected. If not, then you'd get this problem. If it's not crimped down fully, you'd get this problem.

A couple other things to try:

a) Remove the yellow wire. The K7500 doesn't need the vertical sync if it's composite, and it can mess up the sync. If it doesn't help, put the yellow wire back.

b) Try moving the sync to the negative pins...

Removed the yellow wire and got no picture.

Not sure what you mean by choice (b) though

Also where is H-Hold is it that blue pot right by the black connector in the pic above?

The diagram in the game says h-hold is on the remote but its not

Greg

 

[GCS2000]

Well what do you know after shoving my head up under the cabinet and really looking hard on the chassis I found the H-Hold and my issue is fixed I can see the game.

Unfortunately I cannot shift the image enough left-right to get the whole thing on the screen as I am at the end of the adjustment and am still missing a small part on the left side.

Pretty happy that its up and running and has nice image actually.

I am guessing maybe a cap kit would fix the left-right adjustment issue??

Greg

 

[sk8ersublime]

Does the pcb have any pots to adjust the picture? My Mario wasn't centered until I played with the pots on the Mario pcb video board

 

[GCS2000]

There are 2 pots that I can see H-Hold and Sub something (can't make out the text) and that's all I see.

I messed with H-Hold a little more and got the picture on to the screen much better but I am at most of the limits of adjustment.

Text is a litttle fuzzier than I would like. I messed with the Focus which helped but didn't take it out fully.

Overall its looking pretty good. Better then when I started as the game is playable now.

Greg

 

[modessitt]

The blue pot is the Sub-Contrast.

The fuzziness is most likely due to the contrast or brightness being up a little too high, or one or more colors up a little too much, although a dirty tube can cause fuzziness, too.

Your H-Pos pot on the remote should move the image left and right. If not, you may need a cap kit to increase the range...