Elecraft

K1 Band Display Problem

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EricJ-2

K1 Band Display Problem

K1, SN 1976 with 1.09E firmware, 4 band module and ATU. It's been
working flawlessly since I built it around 2005 or so.

It works fine on receive and transmit on all bands except that when
changing bands it displays 7, 10, 10, 21. Though indicating 10 mhz, it
works fine on 14 mhz, but the display is obviously wrong. Probably a
solder joint that decided not to work, but the LCD and added backlight
obscure pins on the firmware socket. I've resoldered pins on the LCD and
the firmware socket that I can reach. I've also removed the firmware
chip and reseated it. Problem surfaced suddenly on a camping trip a
couple weeks ago.

Am I at least in the right area? If so, the next thing I'd do is try to
desolder the LCD and touch up solder joints on the firmware socket.

Eric
KE6US
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Mike WA8BXN

Re: K1 Band Display Problem

It sounds to me like a menu setting for band 3 and not a hardware problem.

73 - Mike WA8BXN

-------Original Message-------

From: EricJ

Date: 11/7/2013 1:16:28 PM

To: [hidden email]

Subject: [Elecraft] K1 Band Display Problem

K1, SN 1976 with 1.09E firmware, 4 band module and ATU. It's been

working flawlessly since I built it around 2005 or so.

It works fine on receive and transmit on all bands except that when

changing bands it displays 7, 10, 10, 21. Though indicating 10 mhz, it

works fine on 14 mhz, but the display is obviously wrong. Probably a

solder joint that decided not to work, but the LCD and added backlight

obscure pins on the firmware socket. I've resoldered pins on the LCD and

the firmware socket that I can reach. I've also removed the firmware

chip and reseated it. Problem surfaced suddenly on a camping trip a

couple weeks ago.

Am I at least in the right area? If so, the next thing I'd do is try to

desolder the LCD and touch up solder joints on the firmware socket.

Eric

KE6US
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daleputnam

Re: K1 Band Display Problem

In reply to this post by EricJ-2

Hi Eric, You can reset that display, by going to the manual for the 4 band filter.. and resetting theb3 setting. Basically, go into the menu, select b3, use the band button to select 14.. back out of the menu.. and it will be all happy. Good Fun, this.
Have a great day,

--... ...--
Dale - WC7S in Wy

> Date: Thu, 7 Nov 2013 10:16:08 -0800
> From: [hidden email]
> To: [hidden email]
> Subject: [Elecraft] K1 Band Display Problem
>
> K1, SN 1976 with 1.09E firmware, 4 band module and ATU. It's been
> working flawlessly since I built it around 2005 or so.
>
> It works fine on receive and transmit on all bands except that when
> changing bands it displays 7, 10, 10, 21. Though indicating 10 mhz, it
> works fine on 14 mhz, but the display is obviously wrong. Probably a
> solder joint that decided not to work, but the LCD and added backlight
> obscure pins on the firmware socket. I've resoldered pins on the LCD and
> the firmware socket that I can reach. I've also removed the firmware
> chip and reseated it. Problem surfaced suddenly on a camping trip a
> couple weeks ago.
>
> Am I at least in the right area? If so, the next thing I'd do is try to
> desolder the LCD and touch up solder joints on the firmware socket.
>
> Eric
> KE6US
> ______________________________________________________________
> 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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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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EricJ-2

Re: K1 Band Display Problem

Thanks Mike and Dale. That was the problem. Maybe I screwed it up in the
dark at the campsite. I use this radio a lot at home and in the field,
but nothing ever goes wrong with it so I have little opportunity to
learn much about how it works inside. No doubt I set that up in 2005
when I built it, but haven't revisited it since.

I have a KX1, and two K2s, but the K1 is still my favorite for pure CW
fun. All of them have been very reliable rigs.

73 to both of you and thanks again.

Eric
KE6US

On 11/7/2013 10:46 AM, Dale Putnam wrote:

> Hi Eric,
> You can reset that display, by going to the manual for the 4 band
> filter.. and resetting the
> b3 setting. Basically, go into the menu, select b3, use the band
> button to select 14.. back out of the menu..
> and it will be all happy.
> Good Fun, this.
>
> Have a great day,
>
>
> --... ...-- Dale - WC7S in Wy
>
>
>
>
> > Date: Thu, 7 Nov 2013 10:16:08 -0800
> > From: [hidden email]
> > To: [hidden email]
> > Subject: [Elecraft] K1 Band Display Problem
> >
> > K1, SN 1976 with 1.09E firmware, 4 band module and ATU. It's been
> > working flawlessly since I built it around 2005 or so.
> >
> > It works fine on receive and transmit on all bands except that when
> > changing bands it displays 7, 10, 10, 21. Though indicating 10 mhz, it
> > works fine on 14 mhz, but the display is obviously wrong. Probably a
> > solder joint that decided not to work, but the LCD and added backlight
> > obscure pins on the firmware socket. I've resoldered pins on the LCD
> and
> > the firmware socket that I can reach. I've also removed the firmware
> > chip and reseated it. Problem surfaced suddenly on a camping trip a
> > couple weeks ago.
> >
> > Am I at least in the right area? If so, the next thing I'd do is try to
> > desolder the LCD and touch up solder joints on the firmware socket.
> >
> > Eric
> > KE6US
> > ______________________________________________________________
> > 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

Don Wilhelm-4

Re: K1 Band Display Problem

In reply to this post by EricJ-2

Eric,

You inadvertently changed a menu setting.

The band that is displayed is a menu setting. Enter the menu and scroll
to the "b3" setting - if it shows "b1" (or some different number), tap
BAND until to changes to b3 - then EDIT the parameter - tap BAND to
change it to 14 mHz.

73,
Don W3FPR

On 11/7/2013 1:16 PM, EricJ wrote:

> K1, SN 1976 with 1.09E firmware, 4 band module and ATU. It's been
> working flawlessly since I built it around 2005 or so.
>
> It works fine on receive and transmit on all bands except that when
> changing bands it displays 7, 10, 10, 21. Though indicating 10 mhz, it
> works fine on 14 mhz, but the display is obviously wrong. Probably a
> solder joint that decided not to work, but the LCD and added backlight
> obscure pins on the firmware socket. I've resoldered pins on the LCD
> and the firmware socket that I can reach. I've also removed the
> firmware chip and reseated it. Problem surfaced suddenly on a camping
> trip a couple weeks ago.
>
> Am I at least in the right area? If so, the next thing I'd do is try
> to desolder the LCD and touch up solder joints on the firmware socket.