[Elecraft] K3 TX calibration fails after KXV3B and SYN3A upgrade

[Dave G3WGN M6O]

Mike (and all who have sent replies on and off reflector) - thank you.
I should have been more precise in my note.  The firmware I'm using:

MCU 05.33
FPF 01.23
DSP 02.86

Utility 1.15.6.29

Since the original posting I have reloaded the utility and all firmware.  No change - still no RF out and calibration fails with 0Watts message. Synths check out OK and KXV3B is enabled.
MCU 05.33 was released Friday so is a potential source of the issue.  I could not find a way to roll back to an earlier MCU release to check that out.
73, David G3WGN


From: Mike Harris-9 [via Elecraft] [mailto:ml-node+s365791n7606351h52 at n2.nabble.com]
Sent: 16 August 2015 17:24
To: David Aslin G3WGN <david at aslinvc.com>
Subject: Re: K3 TX calibration fails after KXV3B and SYN3A upgrade

Make sure you have the latest version of the K3 Utility installed.

It is version 1.15.6.29

I had an RX gain cal issue when I installed the new synths and the KXV3B
which was resolved with the latest Utility. Apparently there have been
some timing changes.

Regards,

Mike VP8NO

On 16/08/2015 12:25, Doug Turnbull wrote:

>
> David,
>      I had a similar problem here with a friend's K3 (I have two K3(s) with
> second receivers installed and had no problem prior to doing this
> synthesizer board swap.)    We solved the failure to TX calibrate by
> reloading the K3 Utility - the same one which worked fine previously.
> Reloading the utility is an easy thing to try.
>
>                      73 Doug EI2CN
> -----Original Message-----
> From: Elecraft [mailto:[hidden email]</user/SendEmail.jtp?type=node&node=7606351&i=0>] On Behalf Of Dave
> G3WGN M6O
> Sent: 16 August 2015 10:39
> To: [hidden email]</user/SendEmail.jtp?type=node&node=7606351&i=1>
> Subject: [Elecraft] K3 TX calibration fails after KXV3B and SYN3A upgrade
>
> I'm hoping there is a quick fix for this (some fat-fingering or brain fade
> on
> my part is entirely possible) as the K3 in question is one of four heading
> to E6GG next month.
> Yesterday I upgraded S/N 4474 with KXV3B and 2 x SYN3As and while the panels
> were off, also did the 12V DC Out mod and gold connector replacement mod.  I
> have a full ESD bench and wore a wrist strap at all times.
> After careful reassembly and TMP cable checks, I was able to update to
> latest firmware and enable synths and KXV3B.  But TX Calibration failed with
> Calibration power settled at "   0W; " message.
> I have tried the following remedies:
> Panels off and examined all boards for correct seating.
> Examined all TMP cables for correct seating.
> Replaced panels.
> Re-attempted Calibration - same error.
> Re-flashed the firmware load.  Load successful.
> Re-attempted Calibration - same error.
> Performed EE INIT
> Loaded a known-good prior configuration (from March 2015 well before the
> upgrade)
> Re-attempted Calibration - same error.
>
> Any suggestions for next steps gratefully received!
> 73
> David G3WGN WJ6O
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