[Elecraft] KX3 not working on receive

[Rick Dettinger]

My KX3, SN 3271, is completely dead on receive.  The transmitter, side tone and monitor control are working as ever.  Everything on the front screen seems the same as ever.  I don’t get any S meter reading when I inject the 50 microvolt 7040 KHz signal from my XG1.  Not sure if it is staying in the transmit mode with a transceiver switching problem, or just a problem with the receiver circuitry.  I can transmit with the KX3, and receive with my Collins 75A4.  I get 100 watts key down from my KXPA Amp.  I would like to use the fine receiver in my KX3, and would appreciate any comments.  While I only operate on CW, I listen to AM and SSB signals.  I can’t even here anything when tuned to a strong local AM station, using a wide filter.
Besides the KXBC3, my KX3 is equipped with the internal tuner.  
Extra Credit for answering the following; If I am not going to use internal batteries anymore, is there any problem with removing the cell holders and cable.  Can I also remove the KXBC3 board for possible resale?  Would I need to order a battery retainer if I am not using internal batteries? 
	
Thanks and 73,
Rick Dettinger K7MW