[Premium-Rx] WJ 8709 / 8718 informatiom

[Eric Gauja]

Dear List members,
                                 A few weeks ago, I outlined a pll locking 
problem I was having with my WJ8709. I am appreciative for the helpful 
comments made by people who replied to my posting.  I finally tracked the 
problem to the 2nd LO losing lock briefly when tuning down from a multiple 
of 10 in frequency. It is clearly heat related, as the time spent out of 
lock is greater as the set heats up. I do have the schematics for this part 
of the circuit, and replaced some likely IC's such as the MC4044 phase 
detector, LS190 and LS 191's, but this has not fixed the problem, and I 
would like to read the circuit description part of the relevant WJ manual 
to troubleshoot further.  If anyone has a copy of the circuit description 
part of the 8709 or 8718 manual, I would very much be prepared to pay the 
costs incurred to send me a photocopy of this part of the manual.
                                                                                                                                                       Best 
Regards,
                                                                                                                                                                               Eric.