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Samsung LNT4669 TV Questions & Answers
Dark screen on samsung lnt4669fx lcd tv, what could be the problem?
As you suspect, it might be of T'Con board fault. Check all the flat cables connected to T'Con to panel should be checked first for any loose contacts. Re-seat them once. If you wish to know more,
check this site. It has illustrations of screen shots, for Samsung LCD TVs, with a faulty T'Con board. Can compare these images with your TVs.
When I turn on my
replace bad caps in power supply near connector going to main board (where the inputs are) or just replace power supply board p/n: bn44-00166c
A 1 year old Samsung LNT4669 Television. It
This is a common failure. There are tons of resources for DIY repairs to correct this. I have a tutorial in my Tips & Tricks to fix this. Have a look if you like, best wishes.
Samsung LNT4669F Pixcels Flicker
As long as you only see these artifacts while watching certain broadcasts, the TV is fine. If these lines are present no matter what you are watching, then you have a problem. What you are seeing is signal related and there isn't much you can do to fix that. Think of it like a scratched DVD; you will see strange things on the screen at times and many think it's the TV when it's only the signal from the device to the TV that is corrupt.
I have thought of one possible solution and this will depend on your TV's ability to slightly stretch the picture in vertical/horizontal directions. If your TV will let you, you may be able to raise the top of the picture a cm or so to hide the flickering. Check the TV's onscreen menu for anything to do with picture alignment. This is nothing to do with aspect ratio though so ignore that.
One side of my tv gets dim and out of focus it is a samsung. At times it works fine
back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
How do I troubleshoot my Samsung TV?
I have sound, but no picture.
Caps can fail with no outward signs. It takes a special meter to test them. Your set may have a back light inverter that powers the back lights. When it fails, the picture cant be seen, but you have sound, to check this look for a picture on the screen using a flashlight
My Samsung Tv modle LN46C600F3F has sound no picture, what could be wrong?
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.
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