I don't know why he needs the serial port hooked up on the tuner, if I 
read that right.  Sounds like a stuck relay contact, in tune mode, there 
should be no contact between those phono jacks.  It is a nice tuner, 
just not big enough for my alpha 9500.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Tue, 19 Jan 2016, Steve Forst 
wrote:

> He is having multiple problems:  Amp won't auto band switch, and the
> tuner won't open the relay to break the keying line during a tune.
>
> 73, Steve KW3A
>
> On 1/19/2016 11:34 AM, Butch Bussen wrote:
>> 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
>>>
>>>
>>
>
>