[Elecraft] K2 help!! Fault pulling my hair out

[Don Wilhelm]

Frank,

The most likely is that you have misplugged either the K160RX or the K60XV.
Did you remove any ore options?  KNB2? KSB2? KAF2? or KDSP2?  If so, put 
them back in or use appropriate jumpers before jumping to any conclusions.
A reset should not be necessary - be aware if you do a reset that all 
menu items will be reset to the factory defaults and will wipe out any 
menu setup items you have already done (like the D19=y requirement when 
the K60XV wiring is added).

To determine where the problem might be, I suggest you do some "Cheap 
and Dirty Signal Tracing" (see www.n0ss.net for complete info).
Add a DC Blocking capacitor in series with your antenna lead (center 
conductor if coax), or just a piece of wire sufficient to pick up some 
signals or band noise.  Touch the free end of the capacitor first to the 
junction of D6 and D7 - do you hear an increase in noise?  If so, the 
receiver is working from that point through to the audio stages - since 
it worked before,  it is quite likely still working.
Next move onward toward the receiver front end - th next point is 
normally W6, but you have the K60XV installed, so that "W6" point is 
really pin 3 or 5 of P1.
Did the band noise or signals increase when that point was touched?  If 
so, the bandpass filters are working and the K60XV is plugged correctly.
Next is the W1 jumper, but you have removed that to install the K160RX, 
so touch the wire to K160RX J1 pin 1 - OK there?  If so, the next point 
is K160RX J1 pin 7 - and if that is OK, you should have signals at the 
antenna

73,
Don W3FPR

G6YAQ Frank wrote:
> Hello from UK,
> I have a problem with my K2 s/no 2390,a long story but the short version is
> that it was ok when I aquired it 12 months ago but could not get 40 mtrs
> band,after afew emails from our helpful friends I found that D19 in the sec
> menu was not switched on ,I did this and all bands were working okon
> receive.
> I then decided to put rear bott panel back on along with the pa transistors
> checking for shorts etc, (taken off previous to check for dry joints) all
> other modules were re installed ie k60 xv and 160mtr units .On switching K2
> back on nothing at all but af noise ,no signals at all on any of the bands
> ,display and all controls seem to be working correctly,Ithought I may have
> had a dry joint appear somewhere so rear panel off again to look could see
> nothing .I checked and resoldered all pcb joints on the main board and still
> dead as a do do!!(not hi) Thinking would a reset on the K2 help?
> Can anybody out there help as don't know what to do next will even consider
> sending to some one who can fix or help local in the UK m/cr,lancs area, and
> as a last resort to the USA ,or Elecraft if it requires it.
> Tnx for reading,Frank
>   
>