I am working on a Hisense 50" LED. Backlight comes on but no picture or sound. Upon pressing the power on the unit blinks 7 times pauses then blinks 3 times before energizing the backlight.
I have done some troubleshooting on the PS board. All voltages there seem to be right. What is puzzling me is that when I disconnect the ribbon cable from the right side of the TCON board the left side half of the screen comes on and I can see the word video at the bottom. Also as I press the imput or menu button nothing happens.
Thanks in advance
Dan B
I have done some troubleshooting on the PS board. All voltages there seem to be right. What is puzzling me is that when I disconnect the ribbon cable from the right side of the TCON board the left side half of the screen comes on and I can see the word video at the bottom. Also as I press the imput or menu button nothing happens.
Thanks in advance
Dan B
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