unless you are satisfied,

This is a very simple approach.

(Please click on high lighted words)

Ok I would like for you to open unit and in the middle of the panel is the T-CONN board, it has the LVDS cable going to it and the main board. First try to wiggle the LVDS cable to make sure no loose connections while set is on. Next disconnect LVDS from T-CONN board make sure to not let the cable touch any metal turn set on and see if screen lights up and with a clear screen. If not ok some models won't let you check this way. But if it does the panel is not faulty it is ok, LVDS or main board or T-CONN issue. So let's hope it's the CABLE, LVDS is loose. If you isolate inside the unit you may find your problem much quicker. GOOD luck friend. And if you need to check with a meter,

Would like for you to take your meter and place it on DC voltage the positive end on every connector that says a voltage and the negative wire to the panel this is the best ground. Turn on and see if the unit tries to climb, If you don't find one that's trying to climb suspect it, the 5VDC line if it isn't exact un hook the LVDS cable and see if it goes to 5vdc. Another method is to locate a short circuit, place meter on ohms or beep test follow same procedure no voltage should be shorted to ground. And this is the problem,