Elecraft KPA500 sn 1910 dead. UPDATE 12/17/21
First. Thanks to everyone who has responded to mypost. I have read all comments withinterest and have responded to several folks who offered ideas that I havetried. Thank you for trying to help. SECOND. Here is a bit of extra info that I havediscovered. I disassembled the fuse blockand cleaned all contacts and the fuses with the “Deoxit” product. I configured my “OWON HDS272S”meter/oscilloscope to measure resistance and noted that the leads are about 0.7ohms. I connected the meter leads to theflat prongs of the 115vac cord that was plugged into the fuse block on theKPA500. With the rocker switch on thefuse block 3 in the OFF position (o) the meter showed zero (0) ohms. With switch 3 ON (!) the meter showed 2.8ohms. Thus, subtracting the resistance inthe meter leads, the resistance through the fuse block changed from 0 ohms to2.1 ohms. I connected the 115vac cord tothe wall socket and went through the power up procedure. No joy. I listened for the hum of the transformer, and there was no hum. I am flummoxed! CONCLUSION. Thisleads me to believe that the power cord, fuses, and fuse block are functioning. I think that my next step is to look into the possibilityof sending the KPA500 to a repair facility. I am open to your ideas. 73 Sam ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
