Hello, Customer said this backlight will go off sometime after 2hrs while the tv remains on, after i opened the set to backlight stage and power the tv, i found out that the backlight will go off on one side, this tv has 60 diode led bulb each side all the bulb tested ok, even if some look brown, my supprise is that 30 at of the 60 will go off each side , the screen some side will look dark, what should i do . here is the led driver. T315HW07 V8 31T14-D06, from the psu comes 24v to driver board 
