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headphones in phone jack makes meter go up ...

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ny9h@arrl.net

headphones in phone jack makes meter go up ...

when i plug in the phones ...front panel.... the s meter goes up to 40 over....

previous owner had plug and jack behind mic jack misaligned
causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,

but why the s meter action ???/

otherwise seems ok..

bill
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Dunc Carter - W5DC

Re: headphones in phone jack makes meter go up ...

I'm in process of slowly troubleshooting the same problem. One thing
I've found is that there are intermittent ground resistance issues
between the front panel grounds and rear panel grounds. I also had the
problem of intermittent HI RFI indications and perhaps, because of the
same problem, I have noise from other sources coupled to the line out
and other rear panel audio jacks.

Dunc, W5DC

[hidden email] wrote:

> when i plug in the phones ...front panel.... the s meter goes up to 40 over....
>
> previous owner had plug and jack behind mic jack misaligned
> causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,
>
> but why the s meter action ???/
>
>
> otherwise seems ok..
>
> bill
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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> Please help support this email list: http://www.qsl.net/donate.html
>
>

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Guy, K2AV

Re: headphones in phone jack makes meter go up ...

Is this a K3 or a K2?

On Sun, Aug 1, 2010 at 12:22 PM, Duncan Carter <[hidden email]> wrote:

> I'm in process of slowly troubleshooting the same problem. One thing
> I've found is that there are intermittent ground resistance issues
> between the front panel grounds and rear panel grounds. I also had the
> problem of intermittent HI RFI indications and perhaps, because of the
> same problem, I have noise from other sources coupled to the line out
> and other rear panel audio jacks.
>
> Dunc, W5DC
>
> [hidden email] wrote:
>> when i plug in the phones ...front panel.... the s meter goes up to 40 over....
>>
>> previous owner had plug and jack behind mic jack misaligned
>> causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,
>>
>> but why the s meter action ???/
>>
>>
>> otherwise seems ok..
>>
>> bill
>> ______________________________________________________________
>> 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
>>
>>
>
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Dunc Carter - W5DC

Re: headphones in phone jack makes meter go up ...

K3, S/N 3543 with a recently exchanged dsp board.

Dunc, W5DC

Guy Olinger K2AV wrote:

> Is this a K3 or a K2?
>
> On Sun, Aug 1, 2010 at 12:22 PM, Duncan Carter <[hidden email]> wrote:
>
>> I'm in process of slowly troubleshooting the same problem. One thing
>> I've found is that there are intermittent ground resistance issues
>> between the front panel grounds and rear panel grounds. I also had the
>> problem of intermittent HI RFI indications and perhaps, because of the
>> same problem, I have noise from other sources coupled to the line out
>> and other rear panel audio jacks.
>>
>> Dunc, W5DC
>>
>> [hidden email] wrote:
>>
>>> when i plug in the phones ...front panel.... the s meter goes up to 40 over....
>>>
>>> previous owner had plug and jack behind mic jack misaligned
>>> causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,
>>>
>>> but why the s meter action ???/
>>>
>>>
>>> otherwise seems ok..
>>>
>>> bill
>>> ______________________________________________________________
>>> 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
>>>
>>>
>>>
>> ______________________________________________________________
>> 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
>>
>>
>
>

Greg - AB7R

Re: headphones in phone jack makes meter go up ...

Is there a chance a pin got bent or misaligned when putting the boards
back together?

73
Greg
AB7R

On 8/1/2010 10:28 AM, Duncan Carter wrote:

> K3, S/N 3543 with a recently exchanged dsp board.
>
> Dunc, W5DC
>
> Guy Olinger K2AV wrote:
>
>> Is this a K3 or a K2?
>>
>> On Sun, Aug 1, 2010 at 12:22 PM, Duncan Carter<[hidden email]> wrote:
>>
>>
>>> I'm in process of slowly troubleshooting the same problem. One thing
>>> I've found is that there are intermittent ground resistance issues
>>> between the front panel grounds and rear panel grounds. I also had the
>>> problem of intermittent HI RFI indications and perhaps, because of the
>>> same problem, I have noise from other sources coupled to the line out
>>> and other rear panel audio jacks.
>>>
>>> Dunc, W5DC
>>>
>>> [hidden email] wrote:
>>>
>>>
>>>> when i plug in the phones ...front panel.... the s meter goes up to 40 over....
>>>>
>>>> previous owner had plug and jack behind mic jack misaligned
>>>> causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,
>>>>
>>>> but why the s meter action ???/
>>>>
>>>>
>>>> otherwise seems ok..
>>>>
>>>> bill
>>>> ______________________________________________________________
>>>> 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
>>>>
>>>>
>>>>
>>>>
>>> ______________________________________________________________
>>> 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
>>>
>>>
>>>
>>
>>
> ______________________________________________________________
> Elecraft mailing list
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>
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>

Don Wilhelm-4

Re: headphones in phone jack makes meter go up ...

In reply to this post by Dunc Carter - W5DC

Was the nut on the headphone jack tightened sufficiently to make the
washer behind the panel tight? If not, there is a possibility that the
board is moving a bit when the headphones are plugged in (or removed)
and may cause "strange happenings".
Squeeze the board and front panel metal together and snug up the
headphone jack nut to strong finger tightness.

73,
Don W3FPR

Duncan Carter wrote:

> K3, S/N 3543 with a recently exchanged dsp board.
>
> Dunc, W5DC
>
> Guy Olinger K2AV wrote:
>
>> Is this a K3 or a K2?
>>
>> On Sun, Aug 1, 2010 at 12:22 PM, Duncan Carter <[hidden email]> wrote:
>>
>>
>>> I'm in process of slowly troubleshooting the same problem. One thing
>>> I've found is that there are intermittent ground resistance issues
>>> between the front panel grounds and rear panel grounds. I also had the
>>> problem of intermittent HI RFI indications and perhaps, because of the
>>> same problem, I have noise from other sources coupled to the line out
>>> and other rear panel audio jacks.
>>>
>>> Dunc, W5DC
>>>
>>> [hidden email] wrote:
>>>
>>>
>>>> when i plug in the phones ...front panel.... the s meter goes up to 40 over....
>>>>
>>>> previous owner had plug and jack behind mic jack misaligned
>>>> causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,
>>>>
>>>> but why the s meter action ???/
>>>>
>>>>
>>>> otherwise seems ok..
>>>>
>>>> bill
>>>> ______________________________________________________________
>>>> 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
>>>>
>>>>
>>>>
>>>>
>>> ______________________________________________________________
>>> 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
>>>
>>>
>>>
>>
>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> 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
>
>

Dunc Carter - W5DC

Re: headphones in phone jack makes meter go up ...

In reply to this post by Greg - AB7R

It could but I don't think it's too likely. As far as misalignment is
concerned, I think if you don't bend a pin and you carefully line up the
pins and sockets and if the pins slide into the sockets freely as mine
did, if there's any mis-alignment, there's a socket issue that's beyond
my control.

Elecraft has circuit diagrams available on-line and I've spent quite a
few hours lately studying them. What I haven't seen are drawing of the
circuit board traces which are common service information; having trace
board drawings would really help in troubleshooting the problems.

I could, of course, just send it to Elecraft but that's not very
appealing to me. I've been a ham for fifty-five years and build,
modified, ad repaired my own gear and other peoples. I've done repairs
and managed service depots for industrial vibration equipment. One of
the things that I've learned that if you send something with
intermittent problems in for repair without knowing what is really
wrong, there a good chance that you'll get it back without the problem
really being cured. I also have a good collection of test equipment.

Dunc, W5DC

Greg wrote:

> Is there a chance a pin got bent or misaligned when putting the boards
> back together?
>
> 73
> Greg
> AB7R
>
>
> On 8/1/2010 10:28 AM, Duncan Carter wrote:
>
>> K3, S/N 3543 with a recently exchanged dsp board.
>>
>> Dunc, W5DC
>>
>> Guy Olinger K2AV wrote:
>>
>>
>>> Is this a K3 or a K2?
>>>
>>> On Sun, Aug 1, 2010 at 12:22 PM, Duncan Carter<[hidden email]> wrote:
>>>
>>>
>>>
>>>> I'm in process of slowly troubleshooting the same problem. One thing
>>>> I've found is that there are intermittent ground resistance issues
>>>> between the front panel grounds and rear panel grounds. I also had the
>>>> problem of intermittent HI RFI indications and perhaps, because of the
>>>> same problem, I have noise from other sources coupled to the line out
>>>> and other rear panel audio jacks.
>>>>
>>>> Dunc, W5DC
>>>>
>>>> [hidden email] wrote:
>>>>
>>>>
>>>>
>>>>> when i plug in the phones ...front panel.... the s meter goes up to 40 over....
>>>>>
>>>>> previous owner had plug and jack behind mic jack misaligned
>>>>> causing other issues with the phone jack being plugged in....no audio out of spkr in "no: config,,,
>>>>>
>>>>> but why the s meter action ???/
>>>>>
>>>>>
>>>>> otherwise seems ok..
>>>>>
>>>>> bill
>>>>> ______________________________________________________________
>>>>> 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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>> ______________________________________________________________
>>>> 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
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>> ______________________________________________________________
>> 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
>>
>>
>>
> ______________________________________________________________
> 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
>
>

Dunc Carter - W5DC

Re: headphones in phone jack makes meter go up ...

In reply to this post by Don Wilhelm-4

I did that but it didn't help.

Dunc, W5DC

Don Wilhelm wrote:
> Was the nut on the headphone jack tightened sufficiently to make the
> washer behind the panel tight? If not, there is a possibility that
> the board is moving a bit when the headphones are plugged in (or
> removed) and may cause "strange happenings".
> Squeeze the board and front panel metal together and snug up the
> headphone jack nut to strong finger tightness.
>
> 73,
> Don W3FPR
.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Guy, K2AV

Re: headphones in phone jack makes meter go up ...

It may be that the problem is around/related to the RF gain pot.
Check the traces/pins/sockets related to that. "RF gain" is a
voltage across a pot, whose wipe, with a percentage of the high side
voltage, is sent to an ADC to generate numerical advice to the MCU for
RF gain. Anything that shorts or places an existing voltage on the
wipe line other than that from the pot wipe could move the voltage
indicating erroneously that you had set the RF gain back, and would
raise the S meter reading. Even though this is a digital process, the
analog behavior was retained of setting the S meter to where the
signal would have to be to have signal engage AGC again.

When the defect is in force, does the radio behave as if you had
cranked back the RF gain to the point of showing that same S meter
reading or does it still receive as if the RF gain were at maximum?

73, Guy.

On Sun, Aug 1, 2010 at 2:21 PM, Duncan Carter <[hidden email]> wrote:

> I did that but it didn't help.
>
> Dunc, W5DC
>
> Don Wilhelm wrote:
>> Was the nut on the headphone jack tightened sufficiently to make the
>> washer behind the panel tight? If not, there is a possibility that
>> the board is moving a bit when the headphones are plugged in (or
>> removed) and may cause "strange happenings".
>> Squeeze the board and front panel metal together and snug up the
>> headphone jack nut to strong finger tightness.
>>
>> 73,
>> Don W3FPR
> .
> ______________________________________________________________
> 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
>

ussv dharma

Re: headphones in phone jack makes meter go up ...

In reply to this post by Dunc Carter - W5DC

i HAVE had the same problem from day one....I am hesitant about digging into the k3 to hold the board while I try to tighten the phone jack.

Is the boat easy to get to?

Seems like a lot of people are reporting this problem.

Susan

If you don't change direction you WILL arrive exactly where you're headed!! Susan Meckley, Skipper W7KFI-mm AFA9SM USSV DHARMA

--- On Sun, 8/1/10, Duncan Carter <[hidden email]> wrote:

> From: Duncan Carter <[hidden email]>
> Subject: Re: [Elecraft] headphones in phone jack makes meter go up ...
> To: "Guy Olinger K2AV" <[hidden email]>
> Cc: "Dale Farmer" <[hidden email]>, [hidden email]
> Date: Sunday, August 1, 2010, 7:28 AM
> K3, S/N 3543 with a recently
> exchanged dsp board.
>
> Dunc, W5DC
>
> Guy Olinger K2AV wrote:
> > Is this a K3 or a K2?
> >
> > On Sun, Aug 1, 2010 at 12:22 PM, Duncan Carter <[hidden email]>
> wrote:
> >
> >> I'm in process of slowly troubleshooting the same
> problem. One thing
> >> I've found is that there are intermittent ground
> resistance issues
> >> between the front panel grounds and rear panel
> grounds. I also had the
> >> problem of intermittent HI RFI indications and
> perhaps, because of the
> >> same problem, I have noise from other sources
> coupled to the line out
> >> and other rear panel audio jacks.
> >>
> >> Dunc, W5DC
> >>
> >> [hidden email]
> wrote:
> >>
> >>> when i plug in the phones ...front panel....
> the s meter goes up to 40 over....
> >>>
> >>> previous owner had plug and jack behind mic
> jack misaligned
> >>> causing other issues with the phone jack being
> plugged in....no audio out of spkr in "no: config,,,
> >>>
> >>> but why the s meter action ???/
> >>>
> >>>
> >>> otherwise seems ok..
> >>>
> >>> bill
> >>>
> ______________________________________________________________
> >>> 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
> >>>
> >>>
> >>>
> >>
> ______________________________________________________________
> >> 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
> >>
> >>
> >
> >
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> 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
>

Dunc Carter - W5DC

Re: headphones in phone jack makes meter go up ...

In reply to this post by Guy, K2AV

That's a good suggestion and it's one that I've considered. I should
get back to this on Tuesday when three of my ten grandchildren who have
been here for alternating weeks this summer are back at home so that
peace and tranquility have returned here. With the variations that I
seen in ground path resistances, a variation in ADC input voltages
and/or offsets seem quite plausible.

Dunc, W5DC

Guy Olinger K2AV wrote:

> It may be that the problem is around/related to the RF gain pot.
> Check the traces/pins/sockets related to that. "RF gain" is a
> voltage across a pot, whose wipe, with a percentage of the high side
> voltage, is sent to an ADC to generate numerical advice to the MCU for
> RF gain. Anything that shorts or places an existing voltage on the
> wipe line other than that from the pot wipe could move the voltage
> indicating erroneously that you had set the RF gain back, and would
> raise the S meter reading. Even though this is a digital process, the
> analog behavior was retained of setting the S meter to where the
> signal would have to be to have signal engage AGC again.
>
> When the defect is in force, does the radio behave as if you had
> cranked back the RF gain to the point of showing that same S meter
> reading or does it still receive as if the RF gain were at maximum?
>
> 73, Guy.
>
> On Sun, Aug 1, 2010 at 2:21 PM, Duncan Carter <[hidden email]> wrote:
>
>> I did that but it didn't help.
>>
>> Dunc, W5DC
>>
>> Don Wilhelm wrote:
>>
>>> Was the nut on the headphone jack tightened sufficiently to make the
>>> washer behind the panel tight? If not, there is a possibility that
>>> the board is moving a bit when the headphones are plugged in (or
>>> removed) and may cause "strange happenings".
>>> Squeeze the board and front panel metal together and snug up the
>>> headphone jack nut to strong finger tightness.
>>>
>>> 73,
>>> Don W3FPR
>>>
>> .
>> ______________________________________________________________
>> 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
>>
>>
>
>

Dunc Carter - W5DC

Re: headphones in phone jack makes meter go up ...

In reply to this post by ussv dharma

This problem popped up on my K3 after installing the dsp filter upgrade
a few months ago. I went over the dsp board connections to no avail.
Today, I installed the KDVR and plugging the headphones in the jack no
longer makes the S-meter go up so I assume it was a connection somewhere
on the front panel.

Dunc, W5DC
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