Power work for some time, suddenly stopped working, including 5V power supply is not output, what is the reason? Could it be that the input power is low or the module temperature is too high?
The serial log does not have any print information
Can you give more details? It could be high temperature or sw application issue, it’s hard to give any suggest without more info.
On serial console you may want to run this while it still works and see what it stops at:
watch -n 1 sensors
After testing and temperature has nothing to do, after the fan and heat sink, the circuit board will still be down or restart, and not immediately on the power to restart the situation, are generally in the integration of a period of time after the emergence of such problems
CARRIER_PWR_ON signal will become 0V, so the 5V power supply is not enabled
Serial Print Always print the following information:
[ 30.241346] Could not add tegra-ehci.0 to power domain using device tree
[ 31.323836] regulator_get() failed for (tegra-ehci.0,usb_vbus), -19
[ 31.330262] usb_phy: failed regulator_get vdd_vbus_usb:-19, inst:0
Perhaps whatever is connected to USB is drawing too much power. Try an externally powered USB HUB, see if anything changes.
NOTE: The fan doesn’t normally run except under load.