I own an Astron RS-20A power supply that I use to power my ICOM 735 and some of my VHF rigs. The red on-off rocker switch has gone bad. I cannot find any serial number on my switch (only thing I can discern is "Made in Mexico" on it). There are numbers on it related to different countries (e.g. UK, FR, IT) but no U.S. number. I tried to match any number on the switch I could find with all of the rocker switches in the Mouser Electronics catalog. Seems they have every rocker switch known to man (oops, or woman). Astron Corp. has not responded to me. Guess I am small potatoes. Until I can replace the switch I have am QRT. Can anybody give me a valid part number, or where I can purchase the switch? I would suspect that the only place I can get it is Mouser. Probably not Radio Shack!! I suspect that every Astron power supply uses the same rocker switch (at least the RS series anyway). Would appreciate any help you could provide. Thanks. Dave, WA6TXU.