This TV is model LC-50LB481C. Think C suffix is for Canadian version. U suffix for US so LC-50LB481U.
It is branded Best Buy Recycles (Best Buy repaired and resold??). It is missing 2 ground screws on the PS board, 1 ground screw on the main board and both the tcon shield and screws. I borrowed some screws from the cable clips to ensure it was grounded.
When first plugged in, backlights come on for a few seconds, a quick bright backlight flash and then goes out. No picture.
When power button is pressed, TV attempts to boot, front led slow blinks, millisecond quick backlight flash and front led goes out.
When power button pressed second time, hear a click and front led has fast 2 blink code.
PS connector
ON/OFF 3.9V
+12-A 0V
+12V 12.1V
+5V 0V (problem? or unused)
DIM 3.0V when backlights are on, 3.6V/3.9V when not on
PS_ON 3.4V
main filter caps = 159V
LED strips test good with tester - voltage 62V, 63V
3 red/black pairs going to LED strips, 2 of the pairs are wired in parallel
Backlights off 48.7V, 48.8V
Backlights on 56V, 56V
Anyone have service manual for 2 blink code? Power supply??
It is branded Best Buy Recycles (Best Buy repaired and resold??). It is missing 2 ground screws on the PS board, 1 ground screw on the main board and both the tcon shield and screws. I borrowed some screws from the cable clips to ensure it was grounded.
When first plugged in, backlights come on for a few seconds, a quick bright backlight flash and then goes out. No picture.
When power button is pressed, TV attempts to boot, front led slow blinks, millisecond quick backlight flash and front led goes out.
When power button pressed second time, hear a click and front led has fast 2 blink code.
PS connector
ON/OFF 3.9V
+12-A 0V
+12V 12.1V
+5V 0V (problem? or unused)
DIM 3.0V when backlights are on, 3.6V/3.9V when not on
PS_ON 3.4V
main filter caps = 159V
LED strips test good with tester - voltage 62V, 63V
3 red/black pairs going to LED strips, 2 of the pairs are wired in parallel
Backlights off 48.7V, 48.8V
Backlights on 56V, 56V
Anyone have service manual for 2 blink code? Power supply??
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