Shelly 2.5 not working

    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?

    There are rumours that the (3) electrolyte condensers in Shelly 2.5 are damaged by high temperatures over long time. Hence, the primary step down converter doesn’t work properly. This leads to the outlined issue, especially to the strange sound effects. Skilled people could replace the faulty condensers…

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)