I had one of those that had problems with Kenwood radios.  They tried 
firmware upgrades and even sent me a chip, finally had to change or 
remove a rresister, would have to find my notes on that.  Had to do with 
a wrong logic level.  Once the resister was changed, worked fine.  I 
haven't been paying a lot of attention, wht problem is he having.  I 
still have mine but don't use it.  Been kicking around selling it, but I 
never seem to get rid of ham stuff, just accumulate...
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Sun, 17 Jan 
2016, Steve Forst wrote:

> Richard,
>
> Another thought on your issue.   There have been firmware updates to the
> tuner over the years.  Since it is a used tuner, perhaps it needs a
> firmware update?    I think the firmware version shows up on the power
> up message on the tuner's display..   The latest version is on the MFJ
> site.   I've never done it, but firmware is  installed via the 9 pin
> serial connection on the rear of the tuner.
>
> What brought this to mind is a faint memory  of some Kenwood users
> having some sort of problem with this tuner years ago.    I really don't
> remember what the problem was, but some were resolved with firmware, and
> some had to go in to the shop for  some chip replacement.
>
> Just another thought.
>
> 73, Steve KW3A
>
>