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Weird problems with Philips 52PFL7403D/27

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Fellow forum member said I should repost this here from another tech forum, so here I am.

Frequently, but not always, I get this weird pink pixel tint thing going on, pretty obvious but it's weird, almost like the tv is missing a color gradient and applying pink in its place (it looks almost like pink shadowing, appearing most frequently in shadows and transparent areas, such as in the drop shadow of a menu in windows). It most frequently pops up when changing resolutions and starting a game (even with same resolution game, if the game does a resolution/display check when starting). I have not noticed it just spontaneously happen, but if it does it is very slow and over time. Pressing the menu button on the tv and switching to HDTV mode, then back to PC Mode removes the problem every single time. Another issue that bugs me is that on loading games it will occasionally lose a lot of picture quality, resulting in an image that looks "embossed", very similar to the few seconds you see when you first turn the TV on (the screen shows low quality image for a second before finishing startup and comes back with the proper image. This is fixed by pressing menu button to bring up the menu, then pressing menu button again to return to the HDMI input signal from my PC. It also fixes the problem every single time, without fail.

It has had both of these problems since I first purchased it in 2009, but as it doesn't affect the actual quality or usage I just have lived with the annoyance of using the remote to fix it every couple of hours.

I have attempted to change HDMI cables to fix this problem but no luck. I have also used a different video card but the screen has the same problem regardless. I have also updated the TV firmware but no change (old firmware circa 2008 is the latest one unfortunately, 1.15).

I do not have a camera capable of taking the high quality pictures necessary to show the problems I have described.

Thanks for any information you guys can provide. I know how to access service mode but I'm scared to touch anything in there since nothing is labeled and I've read you can permanently damage the display this way.
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