9 replies to this topic

[Tyrop]

I have a Commodore 1802 monitor and the picture is not centered vertically. Does anyone know how to adjust it? None of the knobs on the back adjust the vertical position. I got an XEP-80 and the last line of text is cut off.

[.....]

What version of the 1802 do you have. could you post a pic of the monitor?

I can tell you if I know which version it is.

[Stephen]

Tyrop, on Tue Feb 9, 2010 12:09 AM, said:

I have a Commodore 1802 monitor and the picture is not centered vertically. Does anyone know how to adjust it? None of the knobs on the back adjust the vertical position. I got an XEP-80 and the last line of text is cut off.

I don't think you will be able to get all 25 lines from the XEP80 on the monitor. This is a common problem with the XEP80. I have tried several devices with it (1084S, 2 different scan doublers + VGA monitors - glass & LCD), and I cannot find any that display all 25 lines of text.

Stephen Anderson

[bob1200xl]

You could try 'vertical size' or 'vertical linerarity', if you have those. Many analog displays do not have vertical centering - it is done with the yoke rings.

Bob

Tyrop, on Tue Feb 9, 2010 12:09 AM, said:

I have a Commodore 1802 monitor and the picture is not centered vertically. Does anyone know how to adjust it? None of the knobs on the back adjust the vertical position. I got an XEP-80 and the last line of text is cut off.

[Tyrop]

kjmann, on Tue Feb 9, 2010 1:02 AM, said:

What version of the 1802 do you have. could you post a pic of the monitor?

I can tell you if I know which version it is.

I don't see a version, but here are some pics.

[Tyrop]

Here are some pics to show what the XEP-80 looks like. Note the top and bottom are cut off.

[.....]

Tyrop, on Wed Feb 10, 2010 2:40 PM, said:

kjmann, on Tue Feb 9, 2010 1:02 AM, said:

What version of the 1802 do you have. could you post a pic of the monitor?

I can tell you if I know which version it is.

I don't see a version, but here are some pics.

Ah Yes!!! I'm familiar with that version. the goldstar version.

Originally known as the CM-141

If you take the back off it should have a vertical size adj POT (as your are looking from the back of the monitor) on the right hand side of the board up toward the screen. I think that's it but, It's been a while since I have seen one of those. =)

[Tyrop]

Kjmann, you have a great memory! I took off the back and that pot adjusts the vertical centering. I found another pot in front of the tint that actualy adjusts the size vertically, which was just what I needed. I was able to squish the top and bottom to get a full display! The only problem is that when you turn off the XEP80 and go back to the regular display, it is very squished. I guess the best solution is to buy a monchrome monitor and use 2 monitors.

[Fox-1 / mnx]

Do what I did.

Replace the internal pot with a version you can adjust from the outside (like an old radio volume knob). Did this once on an old monochrome monitor when I started to use my XEP80.

In another monitor I built an extra pot with a switch to bridge it. That way you can have 2 default settings, manually switched of course but worked for me.

[Tyrop]

Fox-1 / mnx, on Fri Feb 12, 2010 11:38 AM, said:

Do what I did.

Replace the internal pot with a version you can adjust from the outside (like an old radio volume knob). Did this once on an old monochrome monitor when I started to use my XEP80.

In another monitor I built an extra pot with a switch to bridge it. That way you can have 2 default settings, manually switched of course but worked for me.

That's a great idea. I would have to take it to a TV repair center to do that.