fliz You're right, the PSU is fine.
I think it's a problem with wrong RPi firmware (unknown/new hardware revision on RPi5):
Code
Mar 24 02:45:55.807760 LibreELEC kernel: rp1-pio 1f00178000.pio: error -ENOENT: failed to contact RP1 firmware
Mar 24 02:45:55.807790 LibreELEC kernel: rp1-pio: probe of 1f00178000.pio failed with error -2
...
Mar 24 02:45:55.817716 LibreELEC kernel: rp1-firmware: probe of rp1_firmware failed with error -110
Try the latest LE 13 nightly.