Monitor problem need input!!

[Heavy Barrel]

Hello all, I'm new to the board and have a question about one of my arcade monitors.  I picked up a Double Dragon game a couple of weeks ago for just the cabinet and the thing works great.  The only problem is the monitor has a slightly pulsing purple spot a little up and to the left of the center.  It doesn't ruin the game play at all, allthough when the blue player goes into it he looks like the red player other than that the picture is clear and crisp exceptfor the very top of the screen.  It slants to the left at the top 1/4" of the screen.  The screen is black when the power is off with no burn in of images.  That about explains it, now what I need to know if a cap kit and resoldering the wires will fix it or I need to do somthing else.  I plan on using the monitor for my mame cabinet if I can get it fixed.  Any info would be very helpful.

[Dave_K.]

Sounds like magnetic interferance (or the automatic degauser isn't working on the monitor).

[DerrickRe]

The only problem is the monitor has a slightly pulsing purple spot a little up and to the left of the center.

[Heavy Barrel]

First get the monitor test program.
http://www.majorgeeks.com/article.php?sid=960

Then click on the colour setting.

[DerrickRe]

I have read all the dangers on monitors and electrical shock.

[Dave_K.]

Derrick, great post!!!

[tetsu96]

Not to contradict, but wasn't the purity pair of rings the rings FURTHEST from the CRT screen?

My bad if I'm wrong...

A few other things - Convergence probably will never be "perfect" so settle when you get to "really good".  And I also recommend either having a friend help or to have a mirror so you can watch what you're doing to the screen as you adjust the rings...

Here's a good site that touches on just about everything for Television CRTs (and Arcade Monitors fall into the same category for the most part):  http://www.repairfaq.org/REPAIR/F_monfaq.html

[bullish4]

Before you go through all of that, try an external degaussing coil first.  You can buy them online for $25, or a local TV repairman may lend you his probably not much more than $10 if you leave a deposit.  

I give a 90% chance that is all it will take to fix your problem.