Nothing wrong under rotary switch. Yes input protection has been partialy destroyed; one od sidactor thyristor P3100EA, transistor marked as 1AMZ , transistor 81J, one 1K resistor. I think this is not a big deal. The ink is that multimeter is dead and I belive it is OK in general but power supply circuit is damaged. That a schema or service manual would be usefull. Maybe some can give me a tip which components are resposible for it?
Failed components are marked of picures
However I see that 81J is bad, I cannot find datasheet for it. Maybe someone will know what it is actually? I think it is NSN transistor, but maybe I am wrong and diode ?