I do have some problems with my RPI 3B V1.2.
Openhabian was running stable for quite a while on this PI. Then suddenly it was not reachable via network anymore. After a “hard” restart (pulling the power cable) it came back and everything was good for some days. Then again the PI did not respond.
My first guess was the SD Card so I tried it with a new one. But nothing works.
The PI does nothing for quite a time and then the green and red LED start to blink in no specific order. I do not see anything when I attach the PI to a HDMI Monitor and it seems also not connecting the LAN (I cannot see the PI on my routers Web Interface).
I do hear a quit squeak when it is powerde on, which brings me to the result, that it might be a hardware defekt.
Any Ideas what I can do to check the PI?