[Elecraft] K3 amplifier board gold header mod

2012-03-01 Thread Mike K2MK
I received the mod kit for the gold plated pin replacements but I can't find an instruction sheet on the Elecraft site. I really wanted to view the mod before diving into it. Can someone point me to a link. The number on the parts envelope is KPA3CONMDKT. 73, Mike K2MK -- View this message in

Re: [Elecraft] K3 amplifier board gold header mod

2012-03-01 Thread Keith
We are working on instructions to go with the kit. Here are some for now to get you going. Keith The female connectors are already gold plated. But they get damaged and should be replaced anytime the male connectors are damaged. Or replace the KPAIO3 board. The male connector pins can be

Re: [Elecraft] K3 amplifier board gold header mod

2012-03-01 Thread ab2tc
Hi all, Is the measurement point for the indicated voltage in the DISP menu *after* this potentially bad connector or do I still have to worry about this even if the indicated voltage under full load is good? Mine is excellent, I have only 0.4V drop from receive to full 17A worst case at 100W

Re: [Elecraft] K3 amplifier board gold header mod

2012-03-01 Thread Bruce Beford
Knut, Voltage is sensed on the main board, the power to the PA (via the troublesome connectors) is tapped off the main board. High resistance on these connectors do not affect the displayed voltage. 73, Bruce, N1RX Is the measurement point for the indicated voltage in the DISP menu *after*

Re: [Elecraft] K3 amplifier board gold header mod

2012-03-01 Thread Bruce Beford
Sorry, My mistake. I went back to the schematics, and it looks like the 12V level is sensed from the PA board, which would be after the suspect connectors. Unfortunately, there is often no symptom until they corrode/overheat enough to cause problems. I apologize for my earlier misinformation. I