Hello all.
I have several shelly's 2.5 and two of them have stopped working recently. After turning on the 230V, they make a buzzing noise and are not visible, sometimes the indicator light will flash. I made flash and re-uploaded the original software with tasmotizer. They appeared as AP and I connected to them, but only when they are connected to the 3.3v module. Connecting to 230v gives the effect as described above. Maybe some of you met with such a case, any suggestions?