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There should be different HDMI slots on the back of that TV. Switch you HDMI cable to use another slot. Change to that HDMI slot on your TV menu. Sometimes the ports go bad, or there is something messing with the signal.
The HDMI can carry sound and video. Make sure that in your tv menu that your tv is setup under audio has the receive audio from hdmi as well.
Projection TV correct? This may take some work but it is common for a spec of dust to settle onto the Mirror inside the TV, The back side of the TV screen or onto the Lens from which the Video image is projected. Some TVs have ports that allow you to access the inside of the TV from the side, others you must remove the screen.
This is not something to do every day or every week and it will not improve the picture. You only do this when you notice that it is dirty. Any more than that and you yourself will create a bigger problem. ONLY LIGHTLY DUST the screen. Soaps, water and windex will leave streaks, damage the screen and cause more trouble.
Projection TVs are the eqivalent of a big flashlight showing onto a wall. Put you hand in front of the light and you get a shadow.
Inside you TV there is a light (the TV picture) that bonces of a mirror attached to the inside of the back of the TV. The light reflects off the mirror onto the back of the screen. You view this refelected image from the front. Spiders commonly make webs inside the TV that appear in the picture. Dust Bunnies may get blown into an area and become stuck in the way. Sometimes a lite tap, shake or blow may remove this also.
your guns are off and need to be adjusted. your 3 guns (red, green and blue) are off and that would explain the funny colors and shadows. Have a tv tech come out and have a look, they can fix it for a reasonable price.
You have 2 distinct problems that should be addressed separately. Please repost the Samsung problem. I will address the Sony problem here.
If the "shadow" makes the picture seem somewhat of a 3D one, the problem is with the convergence circuit. This could be as simple as bad connections on the pins of the convergence ICs or defective ICs. If you can solder and would like to attempt the repair, update this and I'll provide more details and instructions.
Check settings first to make sure no one changed anything out of the ordinary. Are the shadows that of a color or darkened shadow? It could be out of convergence, which can be corrected in the menu - or it could be low quality video cables to. Also, if there is no green, does a white color show up when you're in a menu mode (Red+Blue+Green = White Image)? If so, then the green picture tube is working and it's just a color adjustment, otherwise you may have to invest in a new green picture tube.
Unplug the TV from the ac wall outlet for about 4 minutes then plug it back in and turn it on. If it still has a double image then tell me if it's affecting the menu screen from the TV (not the cable menu). And is the double image in red and blue?
You have a problem in the convergence circuit. Most likely the stk392-110 ics need to be replaced (with stk392-150's or better) and you are likely to have some burned resistors in this circuit as well.
This really is not a repair that an amateur should attempt, although it's pretty straight forward for anyone experienced with repairing big screen sets. Our shop charges about $300-350 for this repair in your home.
OUR TOSHIBA HAS A DOUBLE VISION/BLURRIE PICTURE. THIS PROBLEM IS ALWAYS THERE. SOMETIMES THE PICTURE IS GREAT, BUT MOST OF THE TIME
ITS BLURRIE/DOUBLE. LOOKS AS IF IT ALWAYS ON 3D!! ANY SUGGESTIONS?
WE WOULD REALLY APPRECIATE ANY HELP WE CAN GET FROM ANYONE.