This problem has been resolved. I was able to identify a poor solder joint on the bar graph IC. Reflowing the joint solved the problem.
73, Robie - AJ4F On Sat, Apr 27, 2019 at 8:57 PM Robie Elms <rule...@gmail.com> wrote: > I posted several days ago about the bar graph (s meter & w meter) on my K2 > was erratic. I received suggestions suggesting changing the RF gain > control and re-doing the S meter calibration. Today i did the following: > > 1. carefully monitored the audio from K2 as the RF gain control was > rotated and found it to be smooth and without dead spots etc. > > 2. checked the AGC threshold and found it to be 3.8 v. in the CAL S LO > mode found the settings to be per the S-meter alignment procedure. > > 3. in the CAL S HI mode i could not get segments past the 2 left most ones > to eliminate. Left adjustment as found > > 4. In the transmit mode only the 2 left most segments illuminate > regardless of the power setting. Placing the Display in RF mode the output > power varies smoothly from 0.1 to well over 10 watts. However, the bar > graph never illuminates more than the 2 left most segments. > > 5. this seems to suggest an issue with the front panel board associated > with the bar graph display. Any suggestions on next steps, what to look > for on the board or other ideas? > > Thanks in advance, > > Robie - AJ4F > > ______________________________________________________________ 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
