MONITOR color problem +degauss

[CK]

i bought a new monitor a month ago, a samsung syncmaster 753s, 17"
when i first power it up, i get strange color on the screen, there's a round or oval shape of color on the screen,
i didnt know what to do at 1st but then i found the degauss button, n it was back to the usual color that i expected,
then 2 days later, the same round shape of color appear again, n i have to degauss it again,

another 3 days later the same thing happened, and almost every sevral days interval, i get the same problem,
the problem is, i see some forums treads saying that they have not degauss their monitor since the 1st time they bought it, some over 2 years, i dont understand y my monitor has to be degaussed so often,

another thing that surprises me is that when i power up the monitor i get the color thing, isnt it suppose to degauss when the monitor is powered up ?

i have a canon bubblejet 210s right next to it n a pair of ATP3 near it, the ATP is suppose to be magnetically shielded, so what else could be the cause of it ??????????????
help, n i might not be able to swap the monitor for another 1 from the shop coz the support here in malaysia is not that good

help appreciated

 

[Zim Hosein]

CK, I've never had to use the deguass feature on my monitor and I've had it for well over a year. Have you tried moving your ATP's away from your monitor to see if they might in fact be the problem?