[Elecraft] KPA100 problem

[n0jrn]

Gang:             I need some advise please.

I'm trying to finish my KPA100 but I can't seem to get beyond voltage tests 
on page 46 of the manual.

I should be getting 90 to 150 V's at the junction of C77 & R11 but only 
getting 47 volts.

I should be getting -5 to -25 V's at pin 8 of U4     BUT   I'm only 
seeing -4.1.

I did some research in the archives and came up with a few ideas.    Checked 
D1 - D8 and T3 pads.  All diodes pass continuity test and T3 seems fine and 
shows zero resistance between pads.

Checking the schematics prompted me to lift the anode of D7 to remove U4. 
In doing this,  the voltage at the junction of R11 came up into spec and 
shows 150 V's.

This means that U4 is drawing the circuit down.  SO,   I sent Elecraft an 
e-mail and Gary sent me a new MAX1406.          Figured I would install it 
and all would be good.        NOT !

After installing the new U4,    I rechecked voltage at R11 and found it is 
still just 47 V's.

I've double checked orientation of U4,  and it's fine.  I was very careful 
to observe anti static procedures when installing the new chip.   SO,   I'm 
confused and not sure where to go from here.

Any advise would be greatly appreciated.

Thanks & 72:           Jerry           N0JRN