monitor LG W1953TE no power

monitor LG W1953TE no power
voltage 5V --> OK
voltage 12V --> OK
voltage 3.3V --> OK

I need firmware ( In this monitor there are two flash memories. I need to find the firmware of this monitor to try to record and see if I can fix the defect.)
The voltage at pin 3 of the UC601 (APE8839) located on the video card is at 5V when it should be 1.8v