The Z bracket should be secure and tight against the side of the heat sink. My KPA500 has 5/16" screws and they tighten the Z-bracket so it does not move. More recently there have been comments that the 5/16" screws are too long, and the length of those screws has now been reduced to 1/4" to ensure they don't "bottom out" against the threaded hole in the heat sink before they are tight.
I don't know how many kits went out with screws that didn't properly tighten, but if you are right that would explain it suddenly showing up now. Ron AC7AC -----Original Message----- I think I may have solved this problem. One of the other posts mentions that the Z-bracket screws are too long and you don't get a tight fit. I changed the five screws from 5/16" to 3/16" and did notice a better grip between the bracket and the PA assembly. I have run it all evening and haven't heard a click or a pop. I even ran the temp up and still nothing. Will it last? I don't know, but it seems to have fixed it. The guy who suggested this has submitted it to Elecraft for a change. Good luck and lets hear if any of you have the same result. ______________________________________________________________ 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
