My LCD monitor problem - color weird

Hi everyone,
Sorry that my Chinese entry is poor so pardon me for English input here...

It has been awhile that my LCD monitor (brand "MAG") does not show color right - when showing picture, color pixels all mess up, but when showing text it is clear. Initially I thought it might be video card gone bad, I connected another LCD with no problem. It is apparent that this monitor has problem. The auto or manual adjustment won't work.

Does any one here have a clue?

Thanks.