hi, i've an udoo x86 advanced, which worked last time i put it away, more than an year ago... today, no sign of signal on monitor... nothing attached, just power and hdmi, tried a keyboard and removed that, too... no ssd or usb or microsd device connected, just the integrated emmc... disconnected battery, same... battery is charged, btw... tried booting keeping pressed the arduino reset button before powering on, nothing tried 3 different monitors and hdmi cables, nothing tried 2 different power supply, which both output the correct voltage, nothing... just green led, fixed, and fan turned on, no signal of any kind... what to do?
