Red colour bleed on TOSH RPTV

After having my Toshiba 40WH08B for about a year now, I've noticed the red colour has just started to bleed off to the left slightly using different connections, on DVD's and Sky tv. This is most obvious when there is some solid bright red text on a dark or light background. I've looked in the colour convergence menu, but all colours seem to be aligned. Its as if the red bulb is out of sink with the other bulbs. Is there a hidden service menu anywhere? Any suggestions?