ehood@paris.ics.uci.edu (Earl Hood) (02/25/91)
Is there anyway to adjust the vertical height on a SM124? The monitor has no visible buttons on the outside to make the adjustments. I would like to know if it could be done, because images look slightly scrunched on the screen. Earl reply to ehood@paris.ics.uci.edu -- Earl Hood (UC Irvine) -------------------------------> ehood@paris.ics.uci.edu
chuck@mrcnext.uiuc.edu (charles bridgeland) (02/25/91)
ehood@paris.ics.uci.edu (Earl Hood) writes: >Is there anyway to adjust the vertical height on a SM124? The monitor has >no visible buttons on the outside to make the adjustments. >I would like to know if it could be done, because images look slightly >scrunched on the screen. >Earl >reply to ehood@paris.ics.uci.edu >-- >Earl Hood (UC Irvine) -------------------------------> ehood@paris.ics.uci.edu ------------------------------- hoho, you're in for some fun you hve to do that on the inside. get some plastic tv adjustment tools fromradio shark or someplace. open the monitor case and look down onto the main board. they're all labeled pretty clearly (bunch of little white potentiometers, and one adj. inductor, for which you will need a plastic hex head tool). -- ---------------------------------------------------------------------------- chuck bridgeland---anarchoRepublican --don't forget, we surround _them_, not the other way around" chuck@mrcnext.cso.uiuc.edu hire me so I can quit this pit. -----------------------------------------------------------------------------
schultzd@papa.egr.msu.edu (David Schultz) (02/27/91)
In article <27C8984D.9979@ics.uci.edu>, ehood@paris.ics.uci.edu (Earl Hood) writes: |> |> Is there anyway to adjust the vertical height on a SM124? The monitor has |> no visible buttons on the outside to make the adjustments. |> |> I would like to know if it could be done, because images look slightly |> scrunched on the screen. |> |> Earl |> reply to ehood@paris.ics.uci.edu |> -- |> Earl Hood (UC Irvine) -------------------------------> ehood@paris.ics.uci.edu To do this mod, you have to take the casing off the monitor. There are screwdriver adjustable pots inside that are, for the most part labeled. You'd probably want a plastic-handled, well-insulated screwdriver for this (JUST IN CASE YOU LAY THE DAMN THING AGAINST SOMETHING NASTY!!!!!) -- ||| David W. Schultz ||| ||| uunet[!rutgers!mailrus]!frith!schultzd ||| / | \ Work Phone: (517)-353-8891 / | \ / | \ "Just gimme a STacy laptop!" / | \
chuck@mrcnext.uiuc.edu (charles bridgeland) (02/28/91)
>To do this mod, you have to take the casing off the monitor. There are screwdriver adjustable >pots inside that are, for the most part labeled. You'd probably want a plastic-handled, >well-insulated screwdriver for this (JUST IN CASE YOU LAY THE DAMN THING AGAINST SOMETHING >NASTY!!!!!) >-- > ||| David W. Schultz ||| > ||| uunet[!rutgers!mailrus]!frith!schultzd ||| -------------------------- also to note that one of the adjustments is an inductor----you will _need_ a plastic tool, or you will never get it right. putting a metal tool in there would make it an iron core inductor for the duration of the attempted adjustment -- ---------------------------------------------------------------------------- chuck bridgeland---anarchoRepublican --don't forget, we surround _them_, not the other way around" chuck@mrcnext.cso.uiuc.edu hire me so I can quit this pit. -----------------------------------------------------------------------------
bergmann@az35.informatik.uni-stuttgart.de (Martin Bergmann) (03/01/91)
To adjust the screen size of the SM124 you have to open the monitor (Note: The wire of the built-in loud-speaker is connected to the platine with a small socket which you've got to pull off to get the casing open). Then you have to look for the points on the main board that are marked with "VSize" and "HSize" (Vertikal/Horizontal size). By using a (plastic) screwdriver, it is possible to readjust the screen size in both directions. This way I have enlarged the size of my monitor screen to a good ex- tent. Finally you should adjust the focus (can't remember the name for it on the platine now, though) to get the picture sharp (this is always a compromise - either the edges are clear or the center) and eventually you should center the screen with HCenter (I think...). It is all not that difficult, only you MUST BE *VERY* CAREFUL not to get a severe electric shock and end up as a little heap of ash on the carpet!!! There is high voltage in some places inside the boxing, and the fact that you have to switch the monitor on to adjust it doesn't make it easier! The best way to do it is: 1. Switch it off and leave it for at least 30 minutes like this; also, pull off all wires; 2. Open the boxing and then connect it to the computer, THEN to the mains again; 3. Run something like a test screen with a rectangular pat- tern or a square that you can check the proportions; 4. Make your adjustments, then disconnect everything and WAIT for another 30 min. (the monitor contains conductors that keep a high voltage for a good while), then reassem- ble the whole lot again... Good luck!!! (...and don't electrocute yourselves!!!) Martin Bergmann / bergmann@ipvr.informatik.uni-stuttgart.dbp.de
vsnyder@jato.jpl.nasa.gov (Van Snyder) (03/01/91)
In article <8751@ifi.informatik.uni-stuttgart.de> bergmann@az35.informatik.uni-stuttgart.de (Martin Bergmann) writes: >To adjust the screen size of the SM124 you have to open the >monitor... I got a monitor with the image tilted. If you carefully loosen the screws clamping the deflection yoke to the picture tube neck, and TWIST the yoke (but kon't slide it along the neck), you can correct this problem too. In any case, observe the kind of safety precautions Bergmann outlined. -- vsnyder@jato.Jpl.Nasa.Gov ames!elroy!jato!vsnyder vsnyder@jato.uucp
schultzd@sierra.egr.msu.edu (David Schultz) (03/03/91)
|> also to note that one of the adjustments is an inductor----you will _need_ a plastic |> tool, or you will never get it right. putting a metal tool in there would make it an |> iron core inductor for the duration of the attempted adjustment So, what happens if you don't play around with the inductor. Which, of course, I didn't do! Hope I'm trashing my friends monitor by not having done this! -- ||| David W. Schultz ||| ||| uunet[!rutgers!mailrus]!frith!schultzd ||| / | \ Work Phone: (517)-353-8891 / | \ / | \ "Just gimme a STacy laptop!" / | \
ehood@bonnie.ics.uci.edu (Earl Hood) (03/05/91)
Thanks for the advise adjusting the monitor; I got to work. I've noticed that one person has mentioned something about a inductor. When I opened up the monitor, I only found the following adjustments: V-line V-Size V-Hold H-Cent & one more having to do with the screen (I can't recall it right now) I did not see the inductor adjustment. If it is supposed to exist, then where is it? What happens if it isn't adjusted when one adjusts the screen controls. -- Earl Hood (UC Irvine) -------------------------------> ehood@paris.ics.uci.edu