[1000mp] Update- FT1000MP repaired.
Ralph S. Turk
w7hsg at kvoa.com
Sun Dec 30 13:23:28 EST 2007
Good morning Ken.
I wonder if you could email me what the whole job cost and time frame
involved. You could mail me direct if you so desire.
Ralph, W7HSG
W7hsg at comcast.net
-----Original Message-----
From: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net]
On Behalf Of Ken W0MZ
Sent: Sunday, December 30, 2007 10:43 AM
To: 1000mp at mailman.qth.net
Subject: [1000mp] Update- FT1000MP repaired.
My FT1000MP is working again thanks to B&B Technical services.
According to Bill, K0ZL,"On the Local unit there is a SMD transistor used as
a DC fuse; it is an ingenious circuit that a)magnifies the effect of a
filter cap on a DC buss line and b) blows instantly whenever there is an
overload, so that no damage occurs to the PC board traces. This device
supplied 9v to the PLL oscillators; when it blew, it supplied only 3.6 volts
to the oscillators, amps, buffers and mixers, which left things running at
like 10 percent efficiency! PLL dividers don't like that much. " Q4031 on
the local unit has been replaced, the alignment performed and all is back to
normal.
While the rig was apart, Bill also installed the Inrad CW waveform/
click modification as well as additional RF input DC overload protection for
these dry , snowy days here in Arvada, Colorado. The CW signal TX bandwidth
as witnessed/ heard on a receive monitor is much better than before. Now I
won't have to worry about getting yelled at by some of the 160m big guns
during 160m contests! HI! I would HIGHLY recommend B&B Tech Services here in
Colorado for your Ft1000MP repair and modification needs as well as any
other rig types.
All of tha above work was completed at a very reasonable rate. (I was
surprised)
73 and thanks to everyone who responded with ideas, tips, recommendations,
etc.
Ken W0MZ (ex-N4UK)
Parker, Co
.
original problem
A new problem started today with my FT1000MP. I have a service manual
and have worked on the rig before but at 47 my vision isn't what it used to
be (time to get reading glasses) and I am having a very difficult time
reading the small type in the service manual drawings.
Here are the symptoms and what I have proven out this morning:
-No discernible SSB/AM signals on 15, 20 and 40m. I heard an SSB signal
for a short few seconds but it sounded like SSB audio with heavy Aurora
flutter. I am hearing "squiggly/ squeakies all over the band where there
should be voice audio. I am hearing a high noise floor.
- Everything is fine on 160,80,10 and the WARC bands.
-There is no TX monitor audio on the "bad" bands with no SSB/ CW monitor/
sidetone audio when I transmit with the monitor function on. The other bands
have TX monitor audio for both CW and SSB.
- The sub receiver hears fine on all bands.
- When I transmit on the "bad" bands I have an RF signal transmitted that
follows the waveform of my voice and the wattmeter shows RF out and the SWR
is normal. It's anyone's guess as to what the TX audio sounds like. I also
see RF out when TXing on CW
- I called a couple of stations while listening on the sub RX with the
main Receiver on the same frequency to no avail so I suppose the audio on
TX is not normal.
The last time I used the rig was during the ARRL SSB SS last month
co-incidentally only on 15,20 and 40m. Anyone have any ideas on what may be
the problem?
What is common to 15,20 and 40 that is not common to the other bands???
Thanks for any help.
Ken, N4UK/0
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