Elecraft

K3 Uh-oh... won't turn off

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Drew AF2Z

K3 Uh-oh... won't turn off

My K3 turns on whenever power is connected, without pushing the power
button. When I push the power button to shut down the display clears but
remains lit-- just a blank amber display. Can only turn on again by
recycling the power supply; the K3 Power button has no effect. Otherwise
the rig seems to operate normally.

I reloaded the firmware and config settings but that didn't help.

This occurred after I replaced the FP plugs with the gold plated ones.
I replaced the PA plugs about a week ago. All plugs are mated/seated
correctly; good solder job.

Any ideas?

73,
Drew
AF2Z

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Don Wilhelm

Re: K3 Uh-oh... won't turn off

Drew,

Do you have anything plugged into the AUX IO connector? If so, remove
it and try to power it down.
If that works, examine all the cabling to the AUX IO, that behavior is
typical if AUX IO pin 8 is held low.

If you are using a VGA cable in the AUX IO connector, change it to a
cable that has all 15 pins straight through.

73,
Don W3FPR

On 10/28/2017 3:55 AM, Drew AF2Z wrote:
> My K3 turns on whenever power is connected, without pushing the power
> button. When I push the power button to shut down the display clears but
> remains lit-- just a blank amber display. Can only turn on again by
> recycling the power supply; the K3 Power button has no effect. Otherwise
> the rig seems to operate normally.
>
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Drew AF2Z

Re: K3 Uh-oh... won't turn off

Don,

Thanks. No, there is nothing on the ACC connector but I'll check it out;
maybe one of the plug pins I snipped ended up back there and is shorting
the line? Seems unlikely but will check it out.

73,
Drew
AF2Z

On 10/28/17 07:51, Don Wilhelm wrote:

> Drew,
>
> Do you have anything plugged into the AUX IO connector? If so, remove
> it and try to power it down.
> If that works, examine all the cabling to the AUX IO, that behavior is
> typical if AUX IO pin 8 is held low.
>
> If you are using a VGA cable in the AUX IO connector, change it to a
> cable that has all 15 pins straight through.
>
> 73,
> Don W3FPR
>
> On 10/28/2017 3:55 AM, Drew AF2Z wrote:
>> My K3 turns on whenever power is connected, without pushing the power
>> button. When I push the power button to shut down the display clears
>> but remains lit-- just a blank amber display. Can only turn on again
>> by recycling the power supply; the K3 Power button has no effect.
>> Otherwise the rig seems to operate normally.
>>
>

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Nr4c

Re: K3 Uh-oh... won't turn off

In reply to this post by Drew AF2Z

Read your last paragraph and double check your work.

Sent from my iPhone
...nr4c. bill

> On Oct 28, 2017, at 3:55 AM, Drew AF2Z <[hidden email]> wrote:
>
> My K3 turns on whenever power is connected, without pushing the power button. When I push the power button to shut down the display clears but remains lit-- just a blank amber display. Can only turn on again by recycling the power supply; the K3 Power button has no effect. Otherwise the rig seems to operate normally.
>
> I reloaded the firmware and config settings but that didn't help.
>
> This occurred after I replaced the FP plugs with the gold plated ones. I replaced the PA plugs about a week ago. All plugs are mated/seated correctly; good solder job.
>
> Any ideas?
>
> 73,
> Drew
> AF2Z
>
>
> ______________________________________________________________
> 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]