Problems with monitor. Please HELP

I just purchased a used 22" Lacie electron blueIV monitor.  After I plugged it in, it works fine, and I even calibrated it so colors look outstanding...

I have a couple of problems though... Not sure if it a monitor setting issue, or an actual problem.

There are 2 very fine, and faint lines of what appears to be missing pixels...   The first line is about 1/4 of the way down the screen, and the other line is about 3/4 of the way down the screen.  Is this the sign of wear and tear on a used monitor?  Or is there any way to get rid of these lines by using the geometry settings?

Also, there is a very faint light blue cast on the left hand side of the screen.  You can't even tell it's there unless you are looking at a page that is entirely white.  But when the page is entirely white, the blue cast (from heavy use?) is definately noticeable when compared with the clear bright whites on the opposite right side of the screen.  I tried Degauss, and that didn't correct either of the problems.  I connected the mointor to another PC, and that didn't correct the problem either.

I only paid about $450 for this monitor on eBay, so I guess I get what I paid for if these problems cannot be fixed.  These issues were not disclosed when I purchased the monitor, and I just did not expect to see any problems like this....  Maybe I should get a refund, or resell it?