[Yaesu] FT-1000D Locks up 3.0 to 4.5 Mhz

[Mike Gusky]

Need some direction on where to start looking.  The rig locks up when  
it's anywhere between 3.0 to 4.5 Mhz.
When it does this, the only way out appears to be a hard reset, which  
puts the receiver on 7.0 Mhz and everything
works fine until I tune down to 4.5 Mhz. or start below 3.0 Mhz and  
tune up to that frequency.  When this occurs, I can see
the frequency in the display and hear a relay continuously cycling.   
Everything works as it should on any of the other
bands.

Any ideas would be much appreciated.

73,
Mike
K5UX