[1000mp] mp intermittent DSP and fix

[bill thomas]

Some of us MP owners have experienced intermittent operation of the DSP. 
Sometimes the DSP works after a long warmup.  Other times it goes out after 
warming up.  It can often be reset my switching the power off then on again. 
  I traced the problem to a bad IC on the DSP-A board. I was able to induce 
it with "freeze" or heat from a simple hair dryer.  I also checked voltages 
to and from the IC.  The voltages are listed in the schematics in the shop 
manual. (A Yaesu tech told me there were no voltages listed to check.) Yaesu 
wanted $55 for the IC or $98 for the entire board.  I opted to replace the 
entire board as I didn't want the job of changing out a $55 25 pin IC.  That 
and the fact that something else could have been going bad on the board as 
well.  The rig is working FB now.  It was much cheaper than sending it to 
and from Yaesu plus the parts and labor.  The best part is that I did not 
have to part with my rig for 8 to 10 weeks which is standard for 
non-warranty work.

Bill k1xt

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