Hello,
I was given a Vizio VX37L HDTV10A that has no picture (not sure about sound - they do not remember if the sound was working when it went bad). When plugged in the VISIO LED on the front lights up orange. When the power button is pushed the VISIO LED turns white. The screen backlight does not come on. Before the power button is pushed, the voltages on connection J1 (Main Board to Power Board) on the Main Board are as follows:
Pin 1 = 0v ("POWRSW")
Pin 2 = 0v ("+12V")
Pin 3 = 0v ("+12V")
Pin 4 = 0v ("+12V")
Pin 5 = 0v ("+12V")
Pin 6 = 0v ("GND")
Pin 7 = 0v ("GND")
Pin 8 = 0v ("GND")
Pin 9 = +5v ("+5V")
Pin 10 = +5v ("+5V")
Pin 11 = +5v ("+5V")
Pin 12 = 0v ("PWM")
Pin 13 = 0v ("BL ON/OFF")
After the power button is pushed, the voltages on connection J1 (Main Board to Power Board) on the Main Board are as follows:
Pin 1 = +3.6v ("POWRSW")
Pin 2 = +12v ("+12V")
Pin 3 = +12v ("+12V")
Pin 4 = +12v ("+12V")
Pin 5 = +12v ("+12V")
Pin 6 = 0v ("GND")
Pin 7 = 0v ("GND")
Pin 8 = 0v ("GND")
Pin 9 = +5v ("+5V")
Pin 10 = +5v ("+5V")
Pin 11 = +5v ("+5V")
Pin 12 = +3.6v ("PWM")
Pin 13 = 0v ("BL ON/OFF")
All the voltages are what they should be, except for Pin 13 ("BL ON/OFF"). I was wondering if anyone had any suggestions as to where to check next.
Thanks in advance for your help.
I was given a Vizio VX37L HDTV10A that has no picture (not sure about sound - they do not remember if the sound was working when it went bad). When plugged in the VISIO LED on the front lights up orange. When the power button is pushed the VISIO LED turns white. The screen backlight does not come on. Before the power button is pushed, the voltages on connection J1 (Main Board to Power Board) on the Main Board are as follows:
Pin 1 = 0v ("POWRSW")
Pin 2 = 0v ("+12V")
Pin 3 = 0v ("+12V")
Pin 4 = 0v ("+12V")
Pin 5 = 0v ("+12V")
Pin 6 = 0v ("GND")
Pin 7 = 0v ("GND")
Pin 8 = 0v ("GND")
Pin 9 = +5v ("+5V")
Pin 10 = +5v ("+5V")
Pin 11 = +5v ("+5V")
Pin 12 = 0v ("PWM")
Pin 13 = 0v ("BL ON/OFF")
After the power button is pushed, the voltages on connection J1 (Main Board to Power Board) on the Main Board are as follows:
Pin 1 = +3.6v ("POWRSW")
Pin 2 = +12v ("+12V")
Pin 3 = +12v ("+12V")
Pin 4 = +12v ("+12V")
Pin 5 = +12v ("+12V")
Pin 6 = 0v ("GND")
Pin 7 = 0v ("GND")
Pin 8 = 0v ("GND")
Pin 9 = +5v ("+5V")
Pin 10 = +5v ("+5V")
Pin 11 = +5v ("+5V")
Pin 12 = +3.6v ("PWM")
Pin 13 = 0v ("BL ON/OFF")
All the voltages are what they should be, except for Pin 13 ("BL ON/OFF"). I was wondering if anyone had any suggestions as to where to check next.
Thanks in advance for your help.
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