Tv keeps goin dim . If we run it in dynamic we can still watch . It is dark but watchable and flickers at the top of the screen. Already tried the turning off ecosensor . Any ideas?

SOURCE: Screen seems to dim and there is flickering while watching

This is both a common and fairly easy repair in this unit. Remove the back, but not all of the back needs to be removed to access the power supply area and locate the power supply board. You might find that all three E919,E920,E921 of the 35v/680uf caps in the upper left of the PS board are bowed and/or vented. Replace all three of them even if they test good...
Next, esr the remaining caps. Last one we did here in the shop there were 16 total that we replaced, many were orange in color but I don't have any notes on their value. The orange color of the cap is a lesser temp range we used 105 degree or better as replacements. Some we used a higher rated cap (higher voltage) same uf rating. Gave it a greater reliability.
Good Luck!
Bill

SOURCE: Plasma Tv

i have the same problem. good sound but dark-distorted picture

SOURCE: red/pink shades in dark areas happens only 6ins down from top

i'm having the same problems, in the dark areas i get a red shade. has lg or anyone else figured out how to fix it, if so your help would be appreciated very much. also i have my pc connected to it and having the same problems.

KOne

SOURCE: my tv picture is dark and flickers

is there any spar, u observed inside the tv when it do like this.

SOURCE: sanyo lcd tv flat

I have researched this problem and it is so common we that own this piece of junk ought to form a class action suit and sue. It is caused by a bad part or bad connections to a part called a backlight inverter. It seems the LCD needs a higher voltage than supplied by the 12vdc power pack so this part re-chops the DC voltage to generate the LCD requirement.

The date of manufacture is on the back of these TVs and all the problems seem to be from those made in 2006 to 2008