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ZL3AI > APRDIG 18.08.03 09:24l 118 Lines 3987 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Aug 15, 1/1
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Friday, August 15, 2003.
1. Welcome midwest.aprs2.net
2. Kamplus - TNC configuration
3. dead D700A
4. Re: dead D700A
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Subject: Welcome midwest.aprs2.net
From: "Phil Pacier, AD6NH" <ad6nh@arrl.net>
Date: Fri, 15 Aug 2003 10:8:29
X-Message-Number: 1
Welcome the latest addition to the Tier 2 network, APRSMDWST at
midwest.aprs2.net. Like all Tier 2 servers, this one offers the 14580
user-defined filter port as well as other standard ports. Check
http://midwest.aprs2.net:14501 for more details. There are now six servers
in the Tier 2 network and growing! Thanks for your support. Enjoy!
73
Phillip Pacier - AD6NH
socal.aprs2.net
http://www.aprsca.net
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Subject: Kamplus - TNC configuration
From: EKoberstei@aol.com
Date: Fri, 15 Aug 2003 12:53:43 EDT
X-Message-Number: 2
Can anyone tell me the ,TNC CONFIGURATION, that should be used for the
APRS-SA set-up section
thanks,
ed k
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Subject: dead D700A
From: "Charles H. Rahe, II" <crahe@infionline.net>
Date: Fri, 15 Aug 2003 22:35:45 -0400
X-Message-Number: 3
Please pardon the post to multiple lists.
I have a D700A that is dead due to the fuse on the circuit board
blowing. I am inclined to send the unit to Kenwood for repairs since I
don't have the eyesight & manual dexterity I used to have and don't want
to risk screwing up anything else.
Has anyone had any experience with Kenwood repairs for this problem?
What was the approximate cost and turn around time?
Was there any other problems that caused the fuse to blow?
Any other comments?
Thanks for the help. Charlie, AI3L
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Subject: Re: dead D700A
From: "James Jefferson" <jj@aprsworld.net>
Date: Fri, 15 Aug 2003 22:36:17 -0500 (CDT)
X-Message-Number: 4
It's funny you should bring this up. I just finished repairing KB0VYO's
D700 that has more or less the same problem. The cable between the control
head and the radio got cut and shorted and blew out a fuse. Adam ordered a
replacement fuse from Kenwood and I was able to remove the old one and
install the new one. It was pretty easy surface mount work. The chip was
approximately the size of a 1206 surface mount resistor. I just used a
cheap radio shack 15 watt soldering iron and was just fine (note: I use
this $7 iron for all surface mount work down to 0603).
But the story doesn't end there. By replacing the fuse I was once again
seeing voltage to the control head, but I still couldn't get it to turn
on. I hooked up to the radios serial port and determined that it worked
properly. Measuring the voltage to the control head showed that it put out
the proper voltage (basically it is a filtered version of the DC input to
the radio). I was most mystified by this, so I took apart the control head
and fed 12 volts from my bench power supply to the input of the 7805 in
the control head and it worked just fine. Subsequent measurements showed
that the voltage to the control head was stable without load, but with
load it dropped to about 4.65 volts ... not the 7+ volts required to run
the 7805.
Since I didn't have a service manual I decided not to dive into the D700
further and repair the power supply, but instead I added a small 1 amp
mini ATX fuse and feed the control head directly with the DC input.
good luck,
-Jim KB0THN
And answers to your specific questions
>Has anyone had any experience with Kenwood repairs for this problem?
I talked with them and they were most helpful. They scanned a section of
the schematic and sent it to me while I was waiting for the service manual
to arrive.
>What was the approximate cost and turn around time?
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