[1000mp] Tuner malfunction

Sat Oct 11 17:58:12 EDT 2008

Hello Jerry,

Thank you for your sugestion..

After some days work on the radio, I have found the problem!

The 25MHz resonator that generate the clock in the radio CPU became out of 
frequency.

The radio CPU "talk" to the tunner CPU via serial, and the baud-rate are 
wrong because this resonator is out of frequency.

Using a frequency counter I found 24.21MHz.

After change the resonator for a new one, the counter shows 24.98MHz and the 
tuner start to work very fine again.

I have returned the old resonator to the radio and check again. The problem 
came again, the tuner stop to work, confirming that the resonatos are the 
cause.

Thank you and to all friends that have send me sugestions to fix this 
problem.

Regards,
Marcus - PP5MS

----- Original Message ----- 
From: "Jerry Spring" <springjl at yahoo.com>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Monday, October 06, 2008 5:59 PM
Subject: Re: [1000mp] Tuner malfunction

> Marcus,
>
> I have owned an MP for 3 years now and it has only had
> two problems while in my possession.  The first one
> had to do with cold solder joints on the VXO board (a
> very common problem), and the second one was a sticky
> relay that wouldn't allow transmitting on 40m.  From
> the other comments here, as well as my own experience,
> it sounds like another sticky relay or cold solder
> joint problem.  You are probably on the right track to
> take out the tuner and reseat it - or at least inspect
> the connections and relays for poor continuity.  I
> wish I could be more help.
>
> Jerry
>
>
> --- pp5ms at pp5ms.com wrote:
>
>> Hello Alex,
>>
>> Thank you for counting your experience with the
>> FT-1000MP.
>>
>> Reading the text, seems to me that the cause can be
>> some bad-contact or
>> locked relay. I go to try to remove tuner outside
>> and to reflow the PCB.
>>
>> Can be some broken solder. Later I come back to tell
>> if I have success.
>>
>> Thank you again!
>>
>> 73,
>> Marcus - PP5MS
>>
>>
>> ----- Original Message ----- 
>> From: "Alex Malyava" <alex.k2bb at gmail.com>
>> To: "All about Yaesu 1000mp"
>> <1000mp at mailman.qth.net>
>> Sent: Monday, October 06, 2008 4:58 PM
>> Subject: Re: [1000mp] Tuner malfunction
>>
>>
>> I had similar behaviour with my 1000MP (regular, not
>> mark) for almost
>> a year about two years ago.
>> I also did everything I could - resetting it,
>> replacing battries etc -
>> it did not help.
>> I was about to send it for service along with a few
>> other things like
>> broken push button I never use etc...
>>
>> I never did that and then I moved to my new house
>> and tuner started to
>> work again once in a while :)
>> I happened to have a vertical... It was around the
>> time of VP6DX
>> expedition when I tried and finally worked them on
>> 80m into barely
>> tuned antenna. There was some very familiar to some
>> of us slight smell
>> of burning electric and dust and you know what? That
>> tuner works great
>> since then...
>>
>> I dont know what happened - sticky relay shaken
>> durinng the move, or
>> excessive dust burned out. Who knows :)
>>
>> On Mon, Oct 6, 2008 at 3:35 PM,  <pp5ms at pp5ms.com>
>> wrote:
>> > Hi Jerry, I´m trying to explain, apologize my bad
>> english.
>> >
>> > My rig work TX 100%, no problem if I not use the
>> tuner.
>> >
>> > When the "Wait" comes on, the rig still receiving,
>> like the PTT command is
>> > missing, the transmit don´t comes on to make the
>> tune work.
>> >
>> > About SWR, I have test using a 50 ohms dumy-load
>> an one antena at 1.5:1,
>> > but
>> > since the rig never turn on the transmitter (via
>> tuner command) the tuner
>> > don´t know the SWR on the output. The "High SWR"
>> never cames on.
>> >
>> > You ask me "is the tuner doing anything?". If I
>> leave the tuner ON and
>> > change the bands, I can listen the motors inside
>> change the capacitors
>> > positions, nothing more.
>> >
>> > Summarizing, everything seems to be well, but the
>> tuner don´t put the rig
>> > in
>> > transmission to make the tunning.
>> >
>> > If I use the rig without the tuner, all work
>> normal.
>> >
>> > I wait that my explanation has made to understand
>> me, and hope you have
>> > some
>> > sugestion to me to try.
>> >
>> > 73,
>> > Marcus - PP5MS
>> >
>> >
>> >
>> > ----- Original Message ----- From: "Jerry Spring"
>> <springjl at yahoo.com>
>> > To: "All about Yaesu 1000mp"
>> <1000mp at mailman.qth.net>
>> > Sent: Monday, October 06, 2008 2:51 PM
>> > Subject: Re: [1000mp] Tuner malfunction
>> >
>> >
>> >> Hi Marcus,
>> >>
>> >> I'm trying to understand the problem better.  I
>> have
>> >> an MP and the "Tuner" light stays on all the
>> time, as
>> >> long as I have the tuner selected.  Are you
>> saying
>> >> that your rig won't transmit at all (with or
>> without
>> >> the tuner)?  What do you see when the "Wait"
>> light
>> >> comes on?  Does the SWR stay the same or
>> decrease?  In
>> >> other words, is the tuner doing anything?  Does
>> the
>> >> High SWR light come on?  Have you changed your
>> antenna
>> >> to something new?
>> >>
>> >> Thanks,
>> >>
>> >> Jerry
>> >> VE6CNU
>> >> --- pp5ms at pp5ms.com wrote:
>> >>
>> >>> Hi, my name is Marcus - PP5MS from Brazil.
>> >>>
>> >>> I have one FT-1000MP with a malfunction on the
>> >>> tuner. If I press the "TUNER" the feedback on
>> >>> display lit and the tuner comes on-line.
>> >>>
>> >>> If I try to press "TUNE", I can see the "WAIT"
>> on
>> >>> display for one to two seconds. After this the
>> reley
>> >>> inside disconected the tuner from anntena
>> circuit,
>> >>> and the "TUNER" still lit.
>> >>>
>> >>> The problem is that the rig still all the times
>> in
>> >>> RX mode, the tuner don't activate the TX.
>> >>>
>> >>> I know the memory full problem, and make a
>> reset,
>> >>> but the problem continues.
>> >>>
>> >>> I know electronics and have good instruments on
>> my
>> >>> lab, from a multimeter to spectrum analyzer, and
>> >>> tools for SMD work.
>> >>>
>> >>> Thank´s for any sugestion,
>> >>>
>> >>> 73,
>> >>> Marcus - PP5MS
>> >>>
>> >>>
>> >>> >
>> >>
>> >>
>>
> ______________________________________________________________
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>> >>>
>> >>
>> >>
>> >>
>> >>
>> >>
>>
> ______________________________________________________________
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>> >>
>> >
>> >
>> >
>>
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