[1000mp] Low Power Output on FT1000MP

[Dan Kovatch]

I recently sent my MP back to Yaesu because of low power out. I had 25 watts
out on 10 and it rose to 75 on 160. Yaesu received the radio on a Monday and
called me Wednesday stating it was done. Total round trip less than three
weeks. they replaced some driver transistors and other switching parts. The
rig has been FB since return. My rig is circa 1995 so one trip in almost 8
years seems acceptable. Unless you have good Surface Mount skills I'd leave
it to the pros.
FWIW
Dan
W8CAR
----- Original Message -----
From: "Wendell Wyly" <wendell@wyly.org>
To: <1000mp@mailman.qth.net>
Sent: Wednesday, March 26, 2003 12:28 AM
Subject: [1000mp] Low Power Output on FT1000MP


>
>
> Puts out about 25W CW and 50 W PP (on 1000MP meter) into a dummy load.
Menu
> 4-0 is correct and RF Power is full on. Full system reset had no effect
> Yaesu said first it was both power transisitors, then on the second call
> said it was probably just one.  They quoted $121 for the pair and up to 2
> hours bench time to put them in ($140) as well as 20 to 30 working days in
> their shop for out of warranty repairs.  They gave me the name of Austin
> Amateur, Houston Amateur, and Texas Towers as also working on them.
>
> Has anyone had any experience with any of these?  I am not comfortable
with
> why they went out, either, although they seemed to think it happens.  I
have
> a shop manual, but the last time I pulled out several layers of the
1000MP,
> I decided to send it back to Yaesu.  Has anyone done this successfully
> (replace the power transistors) or have any idea what causes them to fail
> when nothing changes and the average length of transmission on cw or phone
> is a few seconds.  Sure wish they had 6146's.
>
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