Question about Sanyo DP46849 46 in. HDTV
Posted by Anonymous on
1. Check out is the backlight on when you power up the TV?
2. If the backlights is on, then turned off when you power up the TV, please check the backlights power supply voltage (usually is 12V, or 24V), backlights ON voltage should be 3.0 V or higher, the DIM control voltage should be 2.8 V or higher.
If the 12V (or24V) voltages is missed after shuts down, you do have a power supply problem;
If one of the control voltage is missed or low, you do have a defective main board.
3. If both of the control voltage are high, the backlights turned on and then turned off, you my have a defective backlights inverter board, or defective lamps inside the panel.
Good luck to find the problem.
Posted on May 01, 2015
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Posted on Jan 02, 2017
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