Check for bulging capacitors on the power supply section of the board, as power fluctuations can cause system instability. How to Update Firmware via USB
: Houses an embedded step-down converter that feeds standard voltages (12V, 5V, 3.3V) directly to the logic components and the backlight array. Technical Specifications n.m358.818
Blown main fuse, shorted rectifier diodes, or failed PWM controller in the hot section. Check for bulging capacitors on the power supply