[Elecraft] No Audio in K2

[Unifiedtx at aol.com]

My K2/100 occasionally loses audio when it has been on a while with the AF  
GAIN turned down (K2 on butnotbeingused).  My K2 is an early model in the  2200 
series serial number, and the AF mod was done.  It also has the KDSP2  and 
the 10th digit CW LED zero tuning mod.  Whenever I lose the audio, I  cannot get 
it back by turning the AF GAIN up.  The RF GAIN works  correctly and will 
display all 10 digits if turned CCW while the audio is  lost.  Signals show up 
normally on the S meter as I tune across the  band.  I noticed that I cannot 
activate the DSP when the audio is  gone.  All other functions are normal.  The 
only way I can get the  audio back is to cut the K2 off and then back on.  The 
audio returns to  normal status and may remain that way until I turn the K2 
backoff.  I have  the K2 grounded, but I notice the display may momentarily 
change to either  power setting or keyer speed as my hand approaches the K2.  Is 
this an  electrostatic condition I am going to have to live with?  Has anyone 
else  experienced this?  If so, what can be done to correct this?  Roy  Morris  
W4WFB