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[K3] S/N3050 RS232 port has no response

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JE1TRV

[K3] S/N3050 RS232 port has no response

Dear Elecrafters!
Since few days ago, my K3 (S/N3050) has no response from its RS232 port.
First no frequency data became obtained by Logger32.
Then, I tried to connect by K3 Utility, I tried port refresh, port
test,etc. But no reply from the K3.
I confirmed K3 Utility program is sending polling signal to K3 RS232 port
but seems no reply from K3.

I use USB/RS232 converter between P/C and the rig.
I changed the connection with other rig such as FT-2000, and it works
without problem using same com port, so that I'm sure the RS232 of K3 is
something wrong.

I'm afraid if K3 got a kind of surge damage because we had a bad wx with
lightening just before the reported malfunction occur.

I posted same question to tech support but if anyone had same problem
please advise how to fix this problem.

vy 73
Atsu, JE1TRV from Tokyo Japan

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Pete Smith N4ZR

Re: [K3] S/N3050 RS232 port has no response

The advice I received from tech support was to check the KIO3 "daughter
board" for any open circuits, and then to check U1 on the KIO3A I/O
board. It is a small surface mount chip, very common, and if you can
try to replace it I would, because a replacement board is $115 plus
shipping. I just went through that!

I have now added a Tripplite DB-9 surge protector to the RS-232 port of
my K3, and made very sure that the computer and radio are connected to a
common ground. I think that the surge protector would be a useful
adjunct for any K3 - for $20 plus shipping it's a lot cheaper than
rteplacing the IO board.

73, Pete N4ZR

The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000

On 7/29/2010 3:20 AM, [hidden email] wrote:

> Dear Elecrafters!
> Since few days ago, my K3 (S/N3050) has no response from its RS232 port.
> First no frequency data became obtained by Logger32.
> Then, I tried to connect by K3 Utility, I tried port refresh, port
> test,etc. But no reply from the K3.
> I confirmed K3 Utility program is sending polling signal to K3 RS232 port
> but seems no reply from K3.
>
> I use USB/RS232 converter between P/C and the rig.
> I changed the connection with other rig such as FT-2000, and it works
> without problem using same com port, so that I'm sure the RS232 of K3 is
> something wrong.
>
> I'm afraid if K3 got a kind of surge damage because we had a bad wx with
> lightening just before the reported malfunction occur.
>
> I posted same question to tech support but if anyone had same problem
> please advise how to fix this problem.
>
> vy 73
> Atsu, JE1TRV from Tokyo Japan
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
>

WU9B

Re: [K3] S/N3050 RS232 port has no response

In reply to this post by JE1TRV

Hmmm... What are the BAUD rates for the RS232 and the K3? Do they still match? You didn't mention that in your post.

Steve WU9B
On Jul 29, 2010, at 12:20 AM, [hidden email] wrote:

Dick Dievendorff

Re: [K3] S/N3050 RS232 port has no response

The K3 Utility tries all four RS-232 speeds, so that shouldn't matter for
the K3 Utility. Are you giving the programs the correct COM port?

Try another cable, another computer, etc..

There is a K3 Utility Help page on Troubleshooting USB to Serial adapter
issues.

Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Steve Robinson
Sent: Thursday, July 29, 2010 9:17 AM
To: [hidden email]
Cc: [hidden email]
Subject: Re: [Elecraft] [K3] S/N3050 RS232 port has no response

Hmmm... What are the BAUD rates for the RS232 and the K3? Do they still
match? You didn't mention that in your post.

Steve WU9B
On Jul 29, 2010, at 12:20 AM, [hidden email] wrote:

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______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html