I did some detailed cleaning of my full unit by removing cover, unmounting fan and taking dust out.
By doing so I realized it's not necessary, because most of dust stays outside and it's enough to make sure that visible side edges of radiator are clean. Anyway...
My PI board stopped booting now
I tried re-flashing with Apollo image, Armbian image (for Orange Pi4), but I still get no HDMI output. Red and Green LEDs are lighted up (w/o blinking).
Do I need serial cable to investigate or is there something I can do without cable?
By doing so I realized it's not necessary, because most of dust stays outside and it's enough to make sure that visible side edges of radiator are clean. Anyway...
My PI board stopped booting now
I tried re-flashing with Apollo image, Armbian image (for Orange Pi4), but I still get no HDMI output. Red and Green LEDs are lighted up (w/o blinking).
Do I need serial cable to investigate or is there something I can do without cable?
I ran into the same problem and determined it is the Controller board. Both my units run nicely using a PC so I know its the controller .