[Premium-Rx] WJ8618A problem

[Tom B]

Hello All,

I am working on an 8618A that stops receiving at exactly 900 MHz.  I 
have bypassed the preselector and the antenna switch so those are not 
the problem.
And, of course, my manual does not have very much information on the 
frequency extender.  A block diagram is all it has.
Does anyone out there have the schematic for the FE module that they 
could send me?
Anyone have some advice on what else to check?

Tom Bryan
N3AJA