Have this TV in for a client. Plug it in, standby light blinks 3-4 times, thats it. TCon LEDs light up. Oringinally thought it was the main board. Bought one used on ebay, looked sketchy out of the box, real dirty, etc. Plugged it in, standby comes on steady, but just starts blinking after hitting power button. TCon LEDs never come on. Put original main back in and start looking at power board. Okay, so with main board disconnected and LED connected, I get 177VDC on D1+, 0VDC on D2+ and D3+. Unplug LED, same readings. LED connected, 15MOhm on D1+, 0 on D2+ and D3+. Unplug LED, D1+ starts at about 15MOhm and then slowly starts dropping, D2+/D3+ remain at 0. Shouldn't all the D+ pins read the same? Backlights them selves never seem to turn on. I do have 13V on main board pin out.
Bad power board? LED short?
Bad power board? LED short?
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