I have a Samsung LE46C750 TV
There are no LED'S lit on the front panel of the TV when powered up.
When powered is supplied to the TV the backlight comes on, no sound and no picture.
I cannot see any sign of damage to any of the components on the main logic board (BN41-0142 B) or the power supply board (BN44-00341A)
I have tested the voltages from the power board to the main logic board and all voltages are correct except one.
Pin 18 PS_ON reads 0.8V I linked from pin 16 a 5V pin to pin 18 PS_ON using a 1K resister and the voltage only went up to 1.6V. I pulled the pin from the connector PSU end and tested the voltage again on pin 18 going back to the main logic board and got 4.6v that dropped to 4.3v after a short time. When the pin is plugged back into the connector it drops tp 1.6V again.
None of this made any difference unfortunately.
Any one got any ideas on what can be causing this?
Thanks
There are no LED'S lit on the front panel of the TV when powered up.
When powered is supplied to the TV the backlight comes on, no sound and no picture.
I cannot see any sign of damage to any of the components on the main logic board (BN41-0142 B) or the power supply board (BN44-00341A)
I have tested the voltages from the power board to the main logic board and all voltages are correct except one.
Pin 18 PS_ON reads 0.8V I linked from pin 16 a 5V pin to pin 18 PS_ON using a 1K resister and the voltage only went up to 1.6V. I pulled the pin from the connector PSU end and tested the voltage again on pin 18 going back to the main logic board and got 4.6v that dropped to 4.3v after a short time. When the pin is plugged back into the connector it drops tp 1.6V again.
None of this made any difference unfortunately.
Any one got any ideas on what can be causing this?
Thanks
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