Re: sharp 50-lb371u no backlights

I'm testing a no backlight condition on my Sharp 50-LB371U unit. From what I've read so far on this thread the PS board will sense an "out of normal" condition and shut off. I had replaced the PS board and the unit was working briefly but now there is no backlight again. There is no voltage to the LED strips. There are 6 sets of L & R LED strips, the power connector is connected to the R strip which connects to the L strip. If I apply 12V to the connector on the L strips all LEDs light up. The R strips don't do the same as I haven't...