[Elecraft] K2 Build Problem - No sidetone

[Sean Cavanaugh]

Hi all,

I'm building my K2. I've just got to the step where everything gets 
assembled and tested for the first time, and when testing the sidetone 
I'm getting nothing.

I've set the K2 to edit St L and varied the value from 0 to 255, 
checking the voltages on U8. Pin 1 is 0v for all settings, and pin 4 is 
also always 0v. The Vdd pin has 5.04v, and all ground pins show 
connected to ground. It looks to me like U8 is bad.

Any other ideas?

Thanks es 73,

Sean - VA5LF