Hi all.... 
Long time lurker ... ( from a currently vibrant South Africa )
My first post ...( intro to follow soon ) 
To the OP :
Is there not somebody in your immediate or surrounding neighbourhood that also has a Kemper ?
Why don't you arrange to hook up with him / her , with your unit and compare it to their unit ?
That way you'll hear first hand if your unit is / isn't indeed faulty , .. my 2c