[1000mp] My sick MP

[Jerry Spring]

This is the famous PLL board and it just happened to
me about 9 months ago.  It is caused by cold solder
joints, that can sometimes be repaired by going over
them with a soldering iron.  I tried the repair but
couldn't get it going, so had to get a new board from
Yaesu (they still make them).  It cost $250 for the
board!  If you have the service manual, and don't mind
getting into the rig, turn to page 3-4 and remove the
local unit.  The bad connections are somewhere behind
the Main Loop VCO units TC4001-4004.  Carefully
inspect the solder connections and see if you can find
one that is suspect.  I ended up taking this board out
and putting it back in numerous times, with varying
degrees of success.  One time I fixed 20m but another
band developed problems.  I finally gave up and bought
a new board.  Then I had to go through the alignment
procedure as it was not factory aligned.  The new
board has been working well ever since.  

Good luck and feel free to write at
springjl at yahoo.com.

Jerry Spring
VE6CNU


--- Kathy and Jürgen <nittner at comcast.net> wrote:

> I have an FT1000MP which will not work from 7.500
> Mhz to 14.500 (14 & 10
> mhz bands) no transmit ( of course TX would only
> work inside of the bands)and no receive. All other
> bands are OK appears to
> be a switching diode or transistor. Did anyone  run
> into this problem before
> and know how big of a job it is to repair?
> The rig worked fine before this happened, I just
> went to work some 160 and when I came back to 20m 2
> days later it would not work. 
> 
> Any help will be much appreciated.
>                               Jurgen N9RD
> 
> 
>
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