I was working CW at 50 watts and happen to look up and see a whiff of smoke on the rig end of the fuse holder. The rig never cutoff and the the meters on the Astron indicated normal current and voltage. I immediately killed the power.
The fuse holder was too hot to touch but I did disconnect it from the rig and the PS and took it over to the bench for inspection. The rig end was melted . Further inspection showed no elevated temps on the APP on the rig or the APP on the power cable. After the holder cooled down I separated the fuse holder and dropped the glass fuse out. The cap on the rig end had separated fell out also when I removed the fuse and the end of the glass was black. Concerned about the K2 and the power supply I connected an alternate power cable and every thing checked out with no signs of a problem. I searched the reflector and found several similar cases and concluded the fuse holder was not making a good tight connection with the fuse as pointed out in other posts. Rather than replace the holder with another glass type fuse I opted for a mini-blade fuse thinking it was a more positive connection/solution. I found a mini-blade holder at Radio Shack ( after not finding them at two auto supply stores) PN 270-1237 as well as the mini-blade fuses. I bought two and have installed one in each leg of the power cable. I suggest Elecraft take a look at an alternate fusing for that KAT100 cable. ----- r/ John N4NAB -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-100-Fuse-Holder-Melting-tp7308295p7308295.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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
