Chosen Solution
Hi all, So after some googling i think i know its either the power board of the led strip but i cant make out from other posts how to diagnose which one. Tv is a Hisense H55N5500, if shine a torch can see there is a picture and sound if plugged in to sky. Where and how do i check if its power board or not? Have a multi meter but not sure what readings im looking for and from where? Attahced pics. Thank you
Hi @beno148 , Not much info on Hisense but check the voltage on the connector going from the power board to the LED backlights. (see your last image cable leaving from top of power board as disappearing to panel, I think). Don’t know what the voltages should be there but usually working LED strips are > 100V at the power board. If no voltage there doesn’t mean that the power board is faulty. It may be that the mainboard has not told it to turn on the backlights. If you have >230 -250V (and this is only a guess as to the actual voltage) then it may be a problem in the LED backlight array as you are measuring an open circuit voltage i.e. no current flow through the LEDs. You would then have to access the backlight array and test further
