CRT display color gradually become red, how's going on?

aoc17-inch flat screen, bought a 1-a-half years, the recent use of the time show the red color will gradually tend to even shake, does not display things ah? or graphics? or other reasons?

around to see if there is no other electrical equipment, magnetic and some major equipment will also affect the display degaussing
you have a general display Degaussing button, a few points back or not, go back Nongge degaussing wand, plug in the power of good.General Electric's repair places degaussing wand.If the reddish color screen as a whole, must be released as the display circuit Problems, local color, or by magnetic degaussing circuit problem.I think the issue of monitors, professionals to test the CRT's electron gun circuit.Display may be the problem, that is, red electron gun parts of the circuit may be the phenomenon of leakage.Looking for personal Take a look at.