Ds80249 P Rev 12 Schematic Exclusive Here
Rev 12 integrates dedicated Transient Voltage Suppressor (TVS) diode matrices near all external interfaces to safeguard the main processors against static shocks and lightning surges. 3. Isolated Input/Output (I/O) Logic
If the hardware power rails are stable but the unit refuses to boot, the system is likely suffering from a corrupted SPI Flash chip. ds80249 p rev 12 schematic exclusive
: Check the first and second MOSFETs near the DC-in jack. ds80249 p rev 12 schematic exclusive