My Mitsubishi WS 55859 is starting to age. Before I call the doctor, I' d like to ask some advise. Overall picture quality is poor, it seems almost out of focus. Some channels are "snowy" and HD is not as vibrant as when new. I have reset converegnce and tried to adjust the picture but with no acceptable result.

Is this worth fixing, it's 6 years old?

Probably just needs the optics cleaned. If you've never had it done in 6yrs then for sure do it. http://www.keohi.com/keohihdtv/learnabout/generaltips/screenoptics/cleaningtheoptics.html

Hammer

Is this a diy job or is it better left to a pro?