[Yaesu] FT-1000MP Mk V drift problem

[Keith Dutson]

Maybe some dust has invaded over the year.  Is it possible to clean the
shuttle?

73, Keith NM5G

-----Original Message-----
From: Yaesu [mailto:yaesu-bounces at contesting.com] On Behalf Of Peter
Sundberg
Sent: Friday, July 14, 2017 12:51 PM
To: yaesu at contesting.com
Subject: [Yaesu] FT-1000MP Mk V drift problem

Recently my FT1000MP Mk V (200W version) developed a strange fault. 
All of a sudden the main VFO starts drifting down in frequency, just as if
the radio was scanning. The Sub VFO is not affected by this drift.

If I transmit the frequency drift stops for the full transmit cycle and by
listening to my transmission on another radio I can hear that the frequency
is rock stable. But when I go back to receive the VFO continues to  drift
down in frequency. Eventually the little green "Main Busy" icon will drop
out and I loose receive the receiver completely,. This icon dropout behavior
is somewhat intermittent during the drift sessions.

Moving the VFO shuttle jog ever so slightly clockwise will stop the drift,
and if I move it further clockwise the VFO will start going up in frequency.
But as soon as I let the shuttle jog back to normal
(idle) position the drift down in frequency continues.

Toggling the power switch on/off has brought the rig back to normal in most
cases, but the problem re appears after a while. Pressing the "Lock" button
for the main VFO will not stop the drift.

I read on the (excellent) VA3CR FT1000MP site that a possible problem might
be a cable connected to the shuttle jog being to close to ground. But as I
also intermittently loose the receiver as the "Main busy" icon drops out I
think that the problem is not just the shuttle jog. When the drift is not
there the shuttle jog works as the manual says.

Anyone out there who has experienced this with an MP and can point me in the
right direction to find the fault?

The rig has been in my possession since it was brand new, so I know for a
fact that this problem has never occurred before and no one but me has
tampered with the radio :-)

73
Peter SM2CEW





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