Recently my picture (Hitachi proj hdtv 53fdx20b) is losing some of its black shades and becoming much more darker in areas to where i have to turn up the 'brightness' which does produce a brighter picture but loses blackness depth.
I have tweaked the video settings trying to correct this with no luck. Its hard to describe the change because some scenes are bright, but dark scenes are way to dark because all dark shades seem black. TV is still very watchable, but no where near the clearness and brightness of dark scenes as before.
I believe the bulb may have too many hours use on it, if so where can i buy the bulbs for my tv- and could i repair it myself.
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Re: Darkening tv picture
The Picture tubes(not bulbs) do and probably are weak. There replace should only be done by a trained service person. One reason would be the hI Voltage issues related to the crt's, as these tubes store alot of HI voltage even after its unplugged for a while, and another reason would be that these tube can very easy implode then explode and that wouldnt be a pretty sight. Third would be the alighnment involved after all three tubes are replace. There ba cross hatch generator and alot of time involved with the alighnment. Please seek a pro to assit you when your ready to spend at least 900 TO 1000 bucks. Good Luck
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If you are saying that the picture is getting darker and you have already tried to adjust the picture through the menu feature on your TV then it is more than likely the cooling fluid around the CRT tubes. Over time the fluid in these tubes gets cloudy and causes your TVs picture to become dull and distorts the color. You can google tv repair kits .com and I believe they will have a kit for your model.
TRY ON THE DISPLAY PS3 SETINGS TO NOT LET THE HDMI DO AUTOMATIC,,CHECK OFF A FEW ,,LIKE TRY JUST DION IT CUSTOM,,CHECK 480P,,AND 1080I,,,NOT 720P OR 1080P,,TRY THAT AND IF YOUR TV IS A 1080P,,JUST CHECK THAT,,OR IF ITS A 1080I,,JUST THAT
You need to remove the front tv panel, search for the screws right behind the screen and speaker area on the sides of tv. Should be four of them, carefully remove the lower have/quarter and you will find a control box, 6 knobs. Try adjusting them to clear the problem, each color has its own knob, be sure to mark their original position befor adjusting. When you find the red adjustment knob, you should be able to turn it down enough so that it doesnt overpower the rest of the colors. Good luck.
use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.