Big blue box appears in middle of screen - Planar PL1700 17" Flat Panel LCD Monitor

The model indicated uses what is called a Optical Light Engine, it is a very expensive part and likely is your problem---not much else will cause this trouble.

Let me know if you have questions.

hi,

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I have a RAZ 3, cingular service and at the top, middle of my screen is a ..... Hi, wondering what the the blue blinking icon which what appears to be 2 small white ... I notice it after Ive had my cell off for awhile and turn it back on. ... and at the top of the screen it looks like a little box with an A in it, ...
www.askdavetaylor.com/what_do_all_the_icons_on_my_motorola_razr_v3c_phone_mean.html - Cached - Similar

Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

the tv had intermittant solder connections already but h\they appeared when the tv was moved to hook up the digi-box. The solution could be as simple as resoldering the power convergence amps.

It's your "closed captioning." Just turn that feature off, and you'll be good to go!

I f these lines are slightly diagonal and they all showed up at the same time. you probaly have an open resistor in the ABL circuit. since your set is 13 yrs old, I would not put a penny into it.
You might take the front grill cover off and the panel behind it and find the little black box with 6 little controls 3 are for focus 3 are for screen turn the screen ones ever so slightly counter clock wise. the control in the middle is the green screen adjustment. If the green line goes away try the one labeled r for red and b for blue.

Try and turn off the closed captioning. I had the same problem and it turned out that the closed captioning was on t1 instead of OFF. Hope this helps!!!!

type in PT-47WX51 manual in your search bar and there is an online manual from fixya. It will take you through setting up your tv.

check tubes...

need a new bulb