1. Forum
  2. Usenet
  3. COMP.SYS.IBM.PS2.HARDWARE

  • IBM 4707 9" monochrome monitor documentation?

    From Christian Holzapfel@21:1/5 to All on Mon Jan 17 10:48:10 2022
    Got one of these cuties, the -001 version which can do 640x480 only.
    Can't find any low-hanging documentation about it, like a service manual or so, which explains the adjustment potentiometers for example.
    Is it inside some other PS/2 or general manual, possibly?

    Thanks,
    Christian

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Christian Holzapfel on Mon Jan 17 21:15:54 2022
    https://www.youtube.com/watch?v=mLVbmnViz7I

    On 1/17/2022 12:48, Christian Holzapfel wrote:
    Got one of these cuties, the -001 version which can do 640x480 only.
    Can't find any low-hanging documentation about it, like a service manual or so, which explains the adjustment potentiometers for example.
    Is it inside some other PS/2 or general manual, possibly?

    Thanks,
    Christian

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Christian Holzapfel@21:1/5 to All on Wed Jan 19 10:30:43 2022
    Not exactly what I was looking for, but pretty catching to watch him.
    Maybe I'll find some more general monitor adjustment instructions that I can make fit.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tomas Slavotinek@21:1/5 to Christian Holzapfel on Wed Jan 19 20:51:21 2022
    Service literature for IBM VGA monitors is pretty hard to come by.

    Thankfully, the most important adjustments are usually easy to identify, whatever the model or manufacturer of the monitor is.

    What kind of image problem are you trying to correct?

    On 19.01.2022 19:30, Christian Holzapfel wrote:
    Not exactly what I was looking for, but pretty catching to watch him.
    Maybe I'll find some more general monitor adjustment instructions that I can make fit.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Christian Holzapfel@21:1/5 to All on Thu Jan 20 03:11:00 2022
    It's not that bad. The picture is bright and undistorted without any burn-in, and I see no reason to believe in a serious component failure. All caps look fine, too.
    However, after 35 years, I'm sure it could use some minor corrections: A little horizontal offset here, a bit of cushion there, maybe a slight increase in focus, if possible.
    I already found most of the relevant potentiometers, but I'd prefer following a recommended tweaking procedure, rather than just turning wheels and creating possible side effects.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)