Blacksypher
- Jun 1, 2011
- 1
- Joined
- Jun 1, 2011
- Messages
- 1
Things done:
1)I plug in the 120V AC and the back-light turns on .. but stays lit the LED indicators on the front don't light no red/green/blue nothing. I have checks all of the things in the service manuals flow chart up to the Check IR/LED control board (J1,U1,D1)as I'm not sure where its at. or even how I would go about checking it. I have examined the Tcon board for scorches or flash burns it appearers to be fine.
2)Have checked Voltages from PSU all read to spec.
3)power is reaching Control board but can't tell if there is damage as the board visually passes and is showing rigth current as it leaves the board to the tuner card which also checks out.
Update: Checked IR/LED Control board seems ok. Is it possible the scaler board is shot as it seems the IR/LED board needs bi-directional communication to work and if the control board is shorted/malfunctioning wouldn't that stop the LED from lighting or the power button as well as there is no dirrect connection with the Power supply and those components?
1)I plug in the 120V AC and the back-light turns on .. but stays lit the LED indicators on the front don't light no red/green/blue nothing. I have checks all of the things in the service manuals flow chart up to the Check IR/LED control board (J1,U1,D1)as I'm not sure where its at. or even how I would go about checking it. I have examined the Tcon board for scorches or flash burns it appearers to be fine.
2)Have checked Voltages from PSU all read to spec.
3)power is reaching Control board but can't tell if there is damage as the board visually passes and is showing rigth current as it leaves the board to the tuner card which also checks out.
Update: Checked IR/LED Control board seems ok. Is it possible the scaler board is shot as it seems the IR/LED board needs bi-directional communication to work and if the control board is shorted/malfunctioning wouldn't that stop the LED from lighting or the power button as well as there is no dirrect connection with the Power supply and those components?
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