[Elecraft] K2 Initial Power up

[Don Wilhelm]

If you were using a lead-free solder, all those I am familiar with 
require a higher temperature, and are more difficult to work with.
650 degrees F is too low for most thru-hole soldering.  Try at least 700 
deg F, I prefer 750 deg/F.

An info 80 message indicates that there is a problem with the AUXBUS 
communication path between the various firmware chips.  At this stage, 
you have only the KIOC chip on the RF Board installed, so check the 
soldering there and at RF Board R64, Control Board R6 and the connectors 
RF J8 pin 28 and CB P3 pin 28.

73,
Don W3FPR

KA1YMX wrote:
> I inspected all of my solder joints and found a few pins that did not have
> proper wetting. The solder was not touching the pin. I was using a different
> type of solder and wanted to try it on the K2. I ended up removing all of
> the solder from the pins without proper wetting and used no-clean solder
> that I normally use. Now the joints look perfect. I have always used
> no-clean solder without any flux at a temp of 650f and I have never had a
> problem before. I guess that's what I get for using something new. 
>
> I did get an info 80 error code when I switched to the 15m band. I turned
> the power off several times to try to repeat the error but could not repeat
> the code. I followed the troubleshooting procedures in the book for the info
> 80 code and all of the signals checked out fine. What is your opinion on
> info 80 showing up once?
>