[Elecraft] Day 1: Fried something already?

[Don Wilhelm]

  Owen,

That all means that you have a problem with the 40 ,meter low pass 
filter.L25, L26,C225, C226, C227, C228, C229 and the contacts of K12 are 
all potential suspects that need to be checked.
One quick test would be to set to 40 meters and power off (the relays 
are latching types) and measure the resistance between the center 
conductor of the antenna jack and ground.  If the inductors have 
continuity, you should read close to zero ohms.   If that is true, that 
does not rule the inductors out entirely, but moves them lower on the 
suspect list.

If you have no way to measure the capacitors, I might suggest that you 
order all the components listed above and replace all of them - much 
less frustration than trying each one at a time.

73,
Don W3FPR

On 11/7/2010 12:12 PM, Owen B. Mehegan wrote:
> Hello Don, thanks for your prompt reply (again - you helped me
> diagnose my misplacement of C6 in the BPF section a couple of weeks
> back).
>
> I do not have the KPA100, just a base K2 with the SSB module added. I
> was using an external Tokyo Hy-Power amp when this mishap occurred.
>
> I've just done the test you described, with a wattmeter and a dummy
> load. It's not as bad as I thought at first - only 40 seems affected.
> No matter what power setting I choose on 40, when I press TUNE the K2
> shows a high current warning, and then about .4 watts output, and the
> needle on the wattmeter doesn't even flicker. All other bands can put
> out their usual amounts of power with no problems.
>