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Re: K3_no_xmit,_no_receive? FIXED! (for now)

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Dave New, N8SBE

Re: K3_no_xmit,_no_receive? FIXED! (for now)

OK, I took the top cover off on the bench, and wiggled some of the TMP
connectors on the new synth boards, and viola! Rx and Tx are back.

Unfortunately, I haven't been able to find which, if any, connector was
flakey, as additional wiggling now doesn't make the issue re-appear.

So, off to the NA QSO party I go, better late than never...

73,

-- Dave, N8SBE

-------- Original Message --------
Subject: Re: [Elecraft] K3_no_xmit,_no_receive?
From: "Dave New, N8SBE" <[hidden email]>
Date: Sat, August 01, 2015 4:38 pm
To: [hidden email], [hidden email]
Cc: [hidden email]

Did you ever solve this?

My K3 just died, after being left on overnight. It was working fine
last evening, and this afternoon, I came down to the shack to start the
NA QSO party CW contest, and no receive, no transmit.

I've tried a number of things, including re-loading all the firmware,
with the requisite reboots, and restoring the configuration file I had
saved just before I took the rig out to W8UM field day. During Field
Day, we started getting ERR 12V errors, and the rig started
spontaneously shutting down, coming up in low power (less than 10W). We
had to finish operating the weekend at the 10 W level. Later, I
discovered that the rig was suffering from the dreaded tin-plated
connector issue, so I ordered the connector upgrade kit, and installed
it a couple of weeks ago. All seemed fine at that point, and we did use
the rig to make about 50 contacts (at full power) at the Detroit Maker
Faire N8M station last weekend.

So, here's what I know, so far:

1) When I change the filter/DSP controls, I can hear the receiver noise
change accordingly, so it seems that the receive chain is intact at
least from the crystal filters to the audio out.

2) I have the subreceiver installed, and I hear (don't hear?) the
identical things on it, so it seems likely that it is something that is
upstream to both the main and subreceiver, or something they both share
(like a mixer/oscillator).

3) I've tried all bands, and none of them are working, BUT

4) I can see signals on the P3 on all bands, so the signals are getting
at least to the IF takeout for the P3. I can see signals on ANT 1, ANT2
(I have the ATU), Rx ANT and on the XVTR IN with the KXV3 set to test
mode.

5) In all of these cases transmit shows 0 W out. The transmit audio
works on USB/LSB, showing ALC and compression readings on the meter.
With VOX on, the CW paddle switches the K3 into transmit mode, the TX
LED lights, and the CW decode shows the transmitted characters.

6) I tried to do an RF calibration with the K3 utility, and it seems to
complete, but the K3 displays "E 0400E2 ERR DSE", and I have to power
down/up the radio to get rid of the error message. This might just be a
red herring, as I've read messages that indicate this could be an
overrun error or some other communications error when using the KUSB
adapter (which I'm using on a Windows 7 PC).

In summary, the K3 serial 3105 seems to behave completely normally,
including all controls and displays, except that I cannot hear signals
from the antenna, although they are displayed clearly on the P3, and
transmit power is nil.

Any suggestions would be most welcome.

73,

-- Dave, N8SBE

-------- Original Message --------
Subject: [Elecraft] K3 no xmit, no receive?
From: [hidden email]
Date: Sat, May 30, 2015 11:08 am
To: [hidden email]
Cc: [hidden email]

Hola,

I was scheduled to operate my K3 as a remote for the WPX contest.
Problems with VPN at remote site delayed that setup. As contest time
approached, I decided to deploy my Buddipole out the apartment window
and was gonna play around with 100w and dipole config.on 15m.

However, I could not hear any signals, at all. Nothing but white noise
on all bands. The Buddipole ends in a BNC which I had connected to
adaptor for PL259. Tried Ant 1 and Ant 2 with no luck. Thinking adaptor
may be bad, I hook BNC to RX in but no sigs there.

This morning, more troubleshooting, I discovered that there is no power
out (although I was tricked as ATU was finding perfect SWR , HI).

K3 has not been used for over a year and when I brought it to HP, it was
inside my rollaboard so I had a watchful eye on it during the trip. The
only thing I can think of, is perhaps one or more of the circuit boards
was dislodged due to vibrations of rolling around the airport or within
the airplane(s) themselves. 9 hours on B767 then 3 on a
B737.

Before I open up the K3 and start messing around inside. any suggestions
or tips on where I should start? I am thinking of pulling circuit boards
then resetting them, just in case one or more was 'jiggled' loose during
transport.

73 Tom HP1/K6CT aka CX7TT

--

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Guy Olinger K2AV

Re: K3_no_xmit,_no_receive? FIXED! (for now)

With problems of this sort, it is very important to make sure that the
TMP connectors are FULLY seated. Otherwise it is possible to have the
center pin just BARELY making contact. This will cause an intermittent
problem to reappear at the most inconvenient times possible (been
there, done that).

If all you did was to wiggle to fix it, then at least one of those
TMPs is NOT fully seated. You need to check them all again. Note that
most of the barrel beneath the fins is in the socket when they are
fully seated.

Rotating the TMP just a little as you push in is sometimes useful.

Good luck and may you not flounder around nearly so bad as I did :>)

73, Guy K2AV

On Sat, Aug 1, 2015 at 6:14 PM, Dave New, N8SBE <[hidden email]> wrote:

> OK, I took the top cover off on the bench, and wiggled some of the TMP
> connectors on the new synth boards, and viola! Rx and Tx are back.
>
> Unfortunately, I haven't been able to find which, if any, connector was
> flakey, as additional wiggling now doesn't make the issue re-appear.
>
> So, off to the NA QSO party I go, better late than never...
>
> 73,
>
> -- Dave, N8SBE
>
> -------- Original Message --------
> Subject: Re: [Elecraft] K3_no_xmit,_no_receive?
> From: "Dave New, N8SBE" <[hidden email]>
> Date: Sat, August 01, 2015 4:38 pm
> To: [hidden email], [hidden email]
> Cc: [hidden email]
>
> Did you ever solve this?
>
> My K3 just died, after being left on overnight. It was working fine
> last evening, and this afternoon, I came down to the shack to start the
> NA QSO party CW contest, and no receive, no transmit.
>
> I've tried a number of things, including re-loading all the firmware,
> with the requisite reboots, and restoring the configuration file I had
> saved just before I took the rig out to W8UM field day. During Field
> Day, we started getting ERR 12V errors, and the rig started
> spontaneously shutting down, coming up in low power (less than 10W). We
> had to finish operating the weekend at the 10 W level. Later, I
> discovered that the rig was suffering from the dreaded tin-plated
> connector issue, so I ordered the connector upgrade kit, and installed
> it a couple of weeks ago. All seemed fine at that point, and we did use
> the rig to make about 50 contacts (at full power) at the Detroit Maker
> Faire N8M station last weekend.
>
> So, here's what I know, so far:
>
> 1) When I change the filter/DSP controls, I can hear the receiver noise
> change accordingly, so it seems that the receive chain is intact at
> least from the crystal filters to the audio out.
>
> 2) I have the subreceiver installed, and I hear (don't hear?) the
> identical things on it, so it seems likely that it is something that is
> upstream to both the main and subreceiver, or something they both share
> (like a mixer/oscillator).
>
> 3) I've tried all bands, and none of them are working, BUT
>
> 4) I can see signals on the P3 on all bands, so the signals are getting
> at least to the IF takeout for the P3. I can see signals on ANT 1, ANT2
> (I have the ATU), Rx ANT and on the XVTR IN with the KXV3 set to test
> mode.
>
> 5) In all of these cases transmit shows 0 W out. The transmit audio
> works on USB/LSB, showing ALC and compression readings on the meter.
> With VOX on, the CW paddle switches the K3 into transmit mode, the TX
> LED lights, and the CW decode shows the transmitted characters.
>
> 6) I tried to do an RF calibration with the K3 utility, and it seems to
> complete, but the K3 displays "E 0400E2 ERR DSE", and I have to power
> down/up the radio to get rid of the error message. This might just be a
> red herring, as I've read messages that indicate this could be an
> overrun error or some other communications error when using the KUSB
> adapter (which I'm using on a Windows 7 PC).
>
> In summary, the K3 serial 3105 seems to behave completely normally,
> including all controls and displays, except that I cannot hear signals
> from the antenna, although they are displayed clearly on the P3, and
> transmit power is nil.
>
> Any suggestions would be most welcome.
>
> 73,
>
> -- Dave, N8SBE
>
> -------- Original Message --------
> Subject: [Elecraft] K3 no xmit, no receive?
> From: [hidden email]
> Date: Sat, May 30, 2015 11:08 am
> To: [hidden email]
> Cc: [hidden email]
>
> Hola,
>
> I was scheduled to operate my K3 as a remote for the WPX contest.
> Problems with VPN at remote site delayed that setup. As contest time
> approached, I decided to deploy my Buddipole out the apartment window
> and was gonna play around with 100w and dipole config.on 15m.
>
> However, I could not hear any signals, at all. Nothing but white noise
> on all bands. The Buddipole ends in a BNC which I had connected to
> adaptor for PL259. Tried Ant 1 and Ant 2 with no luck. Thinking adaptor
> may be bad, I hook BNC to RX in but no sigs there.
>
> This morning, more troubleshooting, I discovered that there is no power
> out (although I was tricked as ATU was finding perfect SWR , HI).
>
> K3 has not been used for over a year and when I brought it to HP, it was
> inside my rollaboard so I had a watchful eye on it during the trip. The
> only thing I can think of, is perhaps one or more of the circuit boards
> was dislodged due to vibrations of rolling around the airport or within
> the airplane(s) themselves. 9 hours on B767 then 3 on a
> B737.
>
> Before I open up the K3 and start messing around inside. any suggestions
> or tips on where I should start? I am thinking of pulling circuit boards
> then resetting them, just in case one or more was 'jiggled' loose during
> transport.
>
> 73 Tom HP1/K6CT aka CX7TT
>
> --
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

Wes (N7WS)

Re: K3_no_xmit,_no_receive? FIXED! (for now)

If you want to see intermittent connections...

https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2040317344

Note: The connection is purposefully disconnected to show the corrosion inside
the socket.

And no, I don't live on a tropical island. The average RH here the desert of
Tucson is less than 20%.

On 8/1/2015 8:08 PM, Guy Olinger K2AV wrote:

> With problems of this sort, it is very important to make sure that the
> TMP connectors are FULLY seated. Otherwise it is possible to have the
> center pin just BARELY making contact. This will cause an intermittent
> problem to reappear at the most inconvenient times possible (been
> there, done that).
>
> If all you did was to wiggle to fix it, then at least one of those
> TMPs is NOT fully seated. You need to check them all again. Note that
> most of the barrel beneath the fins is in the socket when they are
> fully seated.
>
> Rotating the TMP just a little as you push in is sometimes useful.
>
> Good luck and may you not flounder around nearly so bad as I did :>)
>
> 73, Guy K2AV
>
>

W1KSZ

Re: K3_no_xmit,_no_receive? FIXED! (for now)

What do they make those things out of ??
Is that your new K3S ??

73, Dick, W1KSZ

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Wes
(N7WS)
Sent: Saturday, August 01, 2015 10:06 PM
To: [hidden email]
Subject: Re: [Elecraft] K3_no_xmit,_no_receive? FIXED! (for now)

If you want to see intermittent connections...

https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/
692485818#zax/2040317344

Note: The connection is purposefully disconnected to show the corrosion
inside the socket.

And no, I don't live on a tropical island. The average RH here the desert
of Tucson is less than 20%.

On 8/1/2015 8:08 PM, Guy Olinger K2AV wrote:

______________________________________________________________
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Bob McGraw - K4TAX

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Wes (N7WS)

To me it looks like the normal oxidation process that occurs due to
reaction between silver plating on the connector and oxygen in the air.
The dark color is silver oxide. {Some of you chemists can better
explain this effect.}

73 Bob, K4TAX

On 8/2/2015 12:06 AM, Wes (N7WS) wrote:

> If you want to see intermittent connections...
>
> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2040317344
>
>
> Note: The connection is purposefully disconnected to show the
> corrosion inside the socket.
>
> And no, I don't live on a tropical island. The average RH here the
> desert of Tucson is less than 20%.
>
> On 8/1/2015 8:08 PM, Guy Olinger K2AV wrote:
>> With problems of this sort, it is very important to make sure that the
>> TMP connectors are FULLY seated. Otherwise it is possible to have the
>> center pin just BARELY making contact. This will cause an intermittent
>> problem to reappear at the most inconvenient times possible (been
>> there, done that).
>>
>> If all you did was to wiggle to fix it, then at least one of those
>> TMPs is NOT fully seated. You need to check them all again. Note that
>> most of the barrel beneath the fins is in the socket when they are
>> fully seated.
>>
>> Rotating the TMP just a little as you push in is sometimes useful.
>>
>> Good luck and may you not flounder around nearly so bad as I did :>)
>>
>> 73, Guy K2AV
>>
>>
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>
>
>

Don Wilhelm-4

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Wes (N7WS)

That looks like silver oxide to me. It is conductive, so should not
pose a problem.

On 8/2/2015 1:06 AM, Wes (N7WS) wrote:
> If you want to see intermittent connections...
>
> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2040317344
>
>
> Note: The connection is purposefully disconnected to show the
> corrosion inside the socket.
>

______________________________________________________________
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drewko

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Wes (N7WS)

It's possible you may have environmental issues going on (google
'chinese drywall'). Check wiring of light switches & outlets, and copper
tubing in plumbing and a/c units for corrosion.

73,
Drew
AF2Z

On 08/02/15 01:06, Wes (N7WS) wrote:

Wes (N7WS)

Re: K3_no_xmit,_no_receive? FIXED! (for now)

I know you guys who responded are trying to be helpful but please....

Look at another photo in the series:

https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2119748590

If all of these dire environmental things are going on in my shack, how come the
connectors at the other end of the cable are free of corrosion?

This was defective hardware, pure and simple, which Elecraft replaced.

On 8/2/2015 5:59 AM, drewko wrote:

> It's possible you may have environmental issues going on (google 'chinese
> drywall'). Check wiring of light switches & outlets, and copper tubing in
> plumbing and a/c units for corrosion.
>
> 73,
> Drew
> AF2Z
>
>
>
> On 08/02/15 01:06, Wes (N7WS) wrote:
>> If you want to see intermittent connections...
>>
>> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2040317344
>>
>>
>>
>> Note: The connection is purposefully disconnected to show the corrosion
>> inside the socket.
>>
>> And no, I don't live on a tropical island. The average RH here the
>> desert of Tucson is less than 20%.
>>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>

Wes (N7WS)

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Don Wilhelm-4

Yeah well... the reason I found it was because I was looking for an intermittent
problem.

I found it.

On 8/2/2015 4:36 AM, Don Wilhelm wrote:

> That looks like silver oxide to me. It is conductive, so should not pose a
> problem.
>
> On 8/2/2015 1:06 AM, Wes (N7WS) wrote:
>> If you want to see intermittent connections...
>>
>> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2040317344
>>
>>
>> Note: The connection is purposefully disconnected to show the corrosion
>> inside the socket.
>>
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>

Wes (N7WS)

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by W1KSZ

No, that's the old K3. The factory-built K3S is a different story. It seems as
if Elecraft drop ships all of my stuff to Joe Btfsplk and then he delivers it to
me:-(

Tell you about it at the next SADXA meeting.

Wes N7WS

On 8/1/2015 10:45 PM, Richard W. Solomon wrote:
> What do they make those things out of ??
> Is that your new K3S ??
>
> 73, Dick, W1KSZ
>
>

______________________________________________________________
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Wes (N7WS)

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Don Wilhelm-4

See: http://k6mhe.com/n7ws/Plating.pdf

On 8/2/2015 4:36 AM, Don Wilhelm wrote:
> That looks like silver oxide to me. It is conductive, so should not pose a
> problem.
>

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drewko

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Wes (N7WS)

Well, you might have mentioned those little details to begin with, right?

From the original photo, which perhaps was over-sharpened, all of the
metal parts look like they are in some state of corrosion.

73,
Drew
AF2Z

On 08/02/15 09:56, Wes (N7WS) wrote:

> I know you guys who responded are trying to be helpful but please....
>
> Look at another photo in the series:
>
> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2119748590
>
>
> If all of these dire environmental things are going on in my shack, how
> come the connectors at the other end of the cable are free of corrosion?
>
> This was defective hardware, pure and simple, which Elecraft replaced.
>
>
>
> On 8/2/2015 5:59 AM, drewko wrote:
>> It's possible you may have environmental issues going on (google
>> 'chinese drywall'). Check wiring of light switches & outlets, and
>> copper tubing in plumbing and a/c units for corrosion.
>>
>> 73,
>> Drew
>> AF2Z
>>
>>
>>
>> On 08/02/15 01:06, Wes (N7WS) wrote:
>>> If you want to see intermittent connections...
>>>
>>> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lightbox/692485818#zax/2040317344
>>>
>>>
>>>
>>> Note: The connection is purposefully disconnected to show the corrosion
>>> inside the socket.
>>>
>>> And no, I don't live on a tropical island. The average RH here the
>>> desert of Tucson is less than 20%.
>>>
>> ______________________________________________________________
>> 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
>> Message delivered to [hidden email]
>>
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>

Fred Townsend-2

Re: K3_no_xmit,_no_receive? FIXED! (for now)

In reply to this post by Bob McGraw - K4TAX

Bob, I wouldn't be too quick to call it silver oxide. Silver chloride and
silver sulfide are more common than silver oxide and all are black and
conductive. One way to tell is silver oxide is removed with heat so a blast
with the heat gun (300C) will make it disappear. (See
https://en.wikipedia.org/wiki/Silver_oxide)

73;
Fred, AE6QL

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Bob
McGraw - K4TAX
Sent: Sunday, August 2, 2015 4:10 AM
To: [hidden email]
Subject: Re: [Elecraft] K3_no_xmit,_no_receive? FIXED! (for now)

To me it looks like the normal oxidation process that occurs due to reaction
between silver plating on the connector and oxygen in the air.
The dark color is silver oxide. {Some of you chemists can better explain
this effect.}

73 Bob, K4TAX

On 8/2/2015 12:06 AM, Wes (N7WS) wrote:

> If you want to see intermittent connections...
>
> https://groups.yahoo.com/neo/groups/Elecraft_K3/photos/photostream/lig
> htbox/692485818#zax/2040317344
>
>
> Note: The connection is purposefully disconnected to show the
> corrosion inside the socket.
>
> And no, I don't live on a tropical island. The average RH here the
> desert of Tucson is less than 20%.
>
> On 8/1/2015 8:08 PM, Guy Olinger K2AV wrote:
>> With problems of this sort, it is very important to make sure that
>> the TMP connectors are FULLY seated. Otherwise it is possible to have
>> the center pin just BARELY making contact. This will cause an
>> intermittent problem to reappear at the most inconvenient times
>> possible (been there, done that).
>>
>> If all you did was to wiggle to fix it, then at least one of those
>> TMPs is NOT fully seated. You need to check them all again. Note that
>> most of the barrel beneath the fins is in the socket when they are
>> fully seated.
>>
>> Rotating the TMP just a little as you push in is sometimes useful.
>>
>> Good luck and may you not flounder around nearly so bad as I did :>)
>>
>> 73, Guy K2AV
>>
>>
>
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