Stupid D9200 Degaussing Tricks

[KevSteele]

Well, I just learned a strange (but effective) trick for degaussing an WG D9200 monitor.

When I got my D9200 yesterday, one of the first things I noticed was a really pale, off-color section of the screen in the lower left-hand corner. This was especially visible when the screen was green (Nokia's free NTEST video testing program is invaluable for this).

Anyway, degaussing didn't fix the problem, so I was just about to build a manual degausser (thanks for the web page, Kelsey!), when I had an idea.

I lifted the front of the monitor (not that easy, mind you!) until the monitor was at roughly the angle it would be when mounted in an arcade cabinet. Then I degaussed again.

Success! The distortion was greatly reduced (not eliminated, but still much better).

I suspect I'll have to do this again once I've got my cab assembled and in place, but as long as I know I've got a fix to the discolored section of the screen, I'm happy.

Thus, the journey to the MAMEframe II begins...  

Kevin

[OSCAR]

Actually, Kevin, what you discovered is not an uncommon problem from what I've found.  Arcade monitors have a tendency to be much harder to degauss when they are either sitting on a flat surface or face-up (cocktail style) than they are when at a slight angle like you found out.  It has to do with the orientation of the monitor with respect to the Earth's magnetic field, and for some reason when the tube is at an angle they aren't quite as susceptible from what I've gathered while scouring RGVAC.

I had major color problems with my cocktail when I first put it together.  The lower right corner was completely bluish-purple, and no amount of degaussing could correct it.  I must have tried over dozen times to manually degauss it, but I only was able to make it marginally better.  Finally I rotated the cocktail cabinet 90 degrees and the color instantly corrected itself.  It seems that monitors that are mounted face-up are the most susceptible to color problems due to it's orientation.  If you do a search on RGVAC for something like "monitor color problems" or other keywords like that, and probably about 90% of the hits will turn up Pac cocktails with a bluish lower right corner.  So I had to rearrange the furniture so the cocktail could be placed up against the wall in that room facing that particular direction.   Go figure...  

[KevSteele]

I suspected that the orientation of the monitor was going to be the key -- I just hope that once the cab is assembled and in iit's appointed place in the gameroom that the monitor doesn't need to be re-oriented!

I find it amusing that I'm actually trying to fight the Earth's magnetic field.

Kevin

[Wienerdog]

So I had to rearrange the furniture so the cocktail could be placed up against the wall in that room facing that particular direction.   Go figure...  

That is probably the better solution, I shingled my house with electromagnets to cancel the effects of the earth.

[Brax]

You could always move to the moon.

Would you play "Earth Patrol" there?