Question about Sony BRAVIA KDL-40S2000 40 in. LCD HDTV
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Posted on Jan 02, 2017
The resolution on this was to check the surge protector the television was plugged into. Once we unplugged and plugged into another surge protector, the screen went back to normal and the appearance was great. We believe this was due to one of the resistors within the surge protector may have become faulty.
Posted on Oct 08, 2008
hi..It's probably a loose cable. The first one to check is the
green connection but make sure they're all tight. RCA cables
tend to pop out part way which is enough to stop the signal.
If the green signal is lost, you get no picture. If the red or blue
are lost, you get a picture with bad coloring.
If you still have the problem check this
LOOK in the back of the TV when you have it turned on. Look in the slots near the top for a white glow coming out of it.
IF you see it, you need your signal board replaced...
IF NOT, then you need your power supply board replaced...
Posted on Apr 19, 2009
SOURCE: bravia hdtv lcd momentary dim
It sounds like the power supply may be going. The back lights on a flat screen works the same as a flourescent light fixture. Flourescent lights have a ballast that powers on the bulbs. Flat screen tv's have capacitors on the power supply that when they charge power on the back lights of the tv. When you see the tv go dim it is actually the back lights that are dimming. This is usually from a faulty capacitor on the power supply not charging to its full potential. If you can open the tv and find the power supply look for any capacitors that are bugling at the top. These are most likely the culprits. A good cap tester is always handy to have although they are expensive ($100) it usually isn't cost effective to have it around just for rare occassions like this. You can remove the caps and take them to Radio Shack and they should be more than glad to test them for you. Before you do any of this though, look in your owners manual and see if there is a setting to where the tv does not use as much power. Maybe something like that is happening. The age of your tv can determine this too. If your tv is a few years old or burned for 20,000 to 50,000 hours the caps could very well be bad. Hope this helps. Good luck.
Posted on Mar 08, 2010
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