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How do I adjust the overscan on a Commodore 1702?

How do I adjust the overscan on a Commodore 1702 monitor? I have the service manual, but I've encountered two problems:

1. I can adjust the vertical size, but the vertical position will not move up far enough to center the picture. The adjustment pot (R429) is at its full left rotation. I'm guessing that fixing this will depend on whether I need more or less resistance. If more, I could replace the pot with one that has greater max resistance. If less, I have to replace one of the neighboring resistors with a lower-value one (since I've turned the pot down to zero and it isn't enough). Does this sound right?

2. I can't find the horizontal-size adjustment coil, which is documented as L503(L522).

Any help appreciated.

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5 Suggested Answers

CoachTim
  • 202 Answers

SOURCE: screen adjust changes when entering/leaving full screen games

When your not playing games does it have this problem? You should update the drivers for the monitor and your video card and even the games for that matter, all of those have updates. Update all of these items and see if the problem still exists. You may try running a virus/spyware/other boogies scan too you never know what ilk they may spread. We'll keep the warranty thing in mind but try the above updates. http://www.viewsonic.com/support/drivers/drivers.cfm?category=1&formName=monitor let me know what happens. Tim

Posted on Mar 23, 2007

SOURCE: Kogi L9ch 19 in flat monitor

(I posted the latest post.) Change the resolution. (Mine was 1024 by 768, so I changed it first to 800 by 600 and then back to 1024 by 768, and it's back to normal!)

Hope that helps.

Posted on Nov 05, 2007

SOURCE: acer x191w monitor background is moved to the right with about 2inches of black on left side.

I tried this and it still does not fix my problem. I went into Menu and hit reset by mistake and that totally screwed up my monitor. Now the left side gets cutoff and no matter what I change the resolution to it does not fix it.

Whjat should I do?

Posted on Apr 15, 2008

BoiseLCD
  • 63 Answers

SOURCE: Viewsonic VX2235wm Horizontal Image Problem

Tricky one. Have you tried using different dispay resolutions from your Windows Display Control Panel?
ie 1200x1014, 1600x1400, etc.

When you say you used the manual adjust, do you mean the horizontal sync option?

Did you perform a Settings Recall?

And most monitors have a way of entering into an engineering "Factory Service Menu". Usually by depressing specific buttons while the monitor is OFF, and then pressing the power button while still holding the others. Then let all button go at once. From there, hit the normal button that you use for getting into the OSD. In the OSD, there's usually a new field with all kinds of cool new settings to play with. One of them being a soft reset. You'll have to search the net for how to enter into your Factory service menu.

Oh wait! I know!
If your picture has moved to the right, move yourself accordingly.
So that now you and your picture will be aligned properly.

He he he...
Kidding!
That one was from ViewSonic customer support.

Posted on Apr 03, 2009

ghassun
  • 499 Answers

SOURCE: vertical screen adjustment-compaq model 7550

u must click on any button on the screen and try to control one by one till u find the destination which u want

Posted on Jun 06, 2009

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