[Elecraft] K3 power down problem
Ian Maude
ian at gb7mbc.net
Tue Nov 10 10:18:00 EST 2009
Yep as per my thread, I did it but still the same issue. I cannot imagine
that was the issue though on #455 after all this time.
73 Ian
2009/11/10 Greg - AB7R <ab7r at cablespeed.com>
> This is the mod description from the website:
>
> This modification adds a diode to the KPA3 12V sense circuit to hold the
> voltage to no
> more than 0.6V when the K3 is turned off. Without it, some K3s refuse to
> turn off when
> the POWER button is tapped because the 12V sense circuit does not drop to a
> low enough
> level to shut down the K3’s MCU.
>
> The diode is a common leaded part. No work with SMDs is required. A minimum
> of
> disassembly is required and no boards need be removed to perform this
> modification.
>
>
> -------------------------
> 73,
> Greg - AB7R
> Whidbey Island WA
> NA-065
>
>
> On Tue Nov 10 2:49 , Ian Maude <ian at gb7mbc.net> sent:
>
> >Hi all,
> >For some reason my K3 will not switch off this morning. I hit the power
> off
> >button and it powers down and starts again immediately. Obviously it goes
> >off when I power the PSU down but it is somewhat annoying. I have
> >reinstalled the firmware in case of corruption but have not as yet done a
> >full reset. Any ideas?
> >
> >73 Ian
> >
> >--
> >Ian J Maude, G0VGS
> >SysOp GB7MBC & HB9DRV-9 DX Clusters
> >Member RSGB, GQRP 9838, FISTS 14077 | K3 #455
> >http://www.amateurradiotraining.org
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