[Elecraft] K2 dsp audio muted

[John Cooper]

Won a dsp built kit for k2.  It was bought knowin it was bad.  Double check part values orientation.  Everything checks out in menus.  I can make adjustments set clock but there's no sound unless u put dsp in bypass then I can hear a signal again.  I did voltage checks in manual and found that on u1-5 i get 5v where it calls for 0.  U1-14 I get 0 where it calls for 5v.  According to schematic this is the muting circuit. I'm thinkin that I need a new firmware chip at u1?  The seller thought it was the dspx board.  But since I'm not gettin the right voltage without dspx board installed I ruled it out.  Is there a menu setting that would trigger the muting?

WT5Y

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