Hello.
My mono monitor has a problem.
The screen is skewed to the right towards the bottom. In other words, a vertical line bends to the right starting about the middle of the screen as it goes top to bottom. At the bottom, the bending is about .5 to 1 inch.
Does anyone know whether this can be fixed? I did a search here but didn't find any.
Thank you.
... there's nothing particularly magnetic near that corner, is there?
This one is quite risky.....
I had some sort of the same problem but my display seems to have something else broken. Anyway, I opened the housing and found three or four "possibilities" to change display behaviour. These four "screw lookalikes" are positioned to the right of the housings innards when watching the display from the front. They are located to some sort of "mainboard" which is positioned vertically. By using an ISOLATED (!!!) screwdriver You could try to turn these screws and look what is happening.
BUT READ THIS BEFORE TRYING:
This is indeed a very risky procedure. As long as there is very high voltage to the tube a single wrong touch of any part with the hands or the screwdriver will not only end the life of this display! So You are definetly doing this on Your own risk!
I only once opened that housing and didn´t make any photographs so please excuse that I´m not able to provide any...
J
There is nothing other than the cube and the keyboard/mouse, so I am guessing it is not due to a magnetic field of some kind.
The monitors are quite old so I thought perhaps this is a sign of aging but I found no reference to this. However, I have two monitors that are doing this, so there may be something here. There is nothing else on the desk, but maybe there is a strong field coming from somewhere else.
As for opening up the case, I don't think I am up to the challenge, but if I don't find a solution, I may end up doing this.
I really appreciate your suggestions. Thank you.
Quote from: "bcislander"
As for opening up the case, I don't think I am up to the challenge, but if I don't find a solution, I may end up doing this.
I really appreciate your suggestions.
As someone who has grabbed the anode cable on a running oscilloscope, please take Jenne's comments seriously. A CRT is a
very low-leakage capacitor and can hold charge for a long time. Look for CRT discharge/safety techniques on the net, should involve a resitor, wire, and an insulating stick.
We really need to get some service manuals captured. Adjusting the mono and color monitors is possible but a guide would be good to have. I tried to run down the Hitachi monitor docs (used by SGI and Sun as well) without result.
I've got a similar problem.
A N4000A with 1-3 inch white stripe at the top of the screen.
The bottom border is fine, but at the top, it seems like the lines bounce off something and land over other lines. If I move the mouse into that area, it does a very nice flip. ;)
I've just opened the thing and cleaned it up, so I can read the capacitor values. It seems to me a dry electrolytic cap could be the culprit.
If only I had some schematics at hand. ;)
I don't want to replace all the capacitors, eventhough it's not very expensive, and I've little hope I can track down the ones, that play a role in the damn vertical deflection circuit.
Any ideas, or better yet, schematics?
p.s.: as for grabbing high voltages inside CRT monitors, isn't it a nice tingling sensation. ;))