On page 23 of my KPA500 assembly manual, relating to the mounting of the rectifier board, it is clear that thermal insulators must isolate the rectifiers from the chassis, and also, that insulating "shoulder washers" must be installed in the four places that you mention as your concern.
The next step, using a DMMeter, checks to determine that there are no shorts between the metal tabs of each rectifier and the bare metal of the Z-bracket. Undoubtedly, you have already discovered this information in the diagram associated with this part of the assmbly procedure. ( See figure 29 ) Doug, VE3VS ..................................................... I'm assembling a KPA-500 that I received today and I'm at the step where I mount the Rectifier bd to the Z-bracket. It looks like the 4 holes for mounting the rectifiers should be threaded for 4-40 screws but mine has about 1/8" holes. There is no mention of using a screw and nut to mount them and there is none provided. I wonder if anyone else has run into this problem Gary W0GHZ -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA-500-Question-tp7585505p7585511.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
