External Display Freezes after Delay

[brenntl]

I have a nuisance issue with the P3 and an external display. When I apply
13.8VDC to the K3 and P3 simultaneously (P3 POWER button must be pushed to
turn on the P3), the external display displays the image first followed by
the image on the P3. This all appears to be normal operation.
Thirty seconds after the image appears on the external display, the display
image freezes and remains frozen and the image on the P3 remains normal. If
I then turn the P3 POWER BUTTON off for a few seconds and then turn it back
on, the image reappears and remains working on the P3 and the external
monitor until I power the whole system down. This sequence of events is very
repeatable, including the time it takes the external display to freeze, and
has done this since I first built the P3.
I have had the same result with 2 different displays. Reloading and
installing the latest P3 and SVGA firmware has no effect and nothing changes
from that described above. It does not make any difference whether I have
the display power on before turning on the P3 or after. I have searched
posts and found nothing on this specific problem.

CONDITIONS:
K3 FW: MCU Ver 5.64
P3 FW: MCU Ver 1.60
P3 Options: SVGA installed running Ver 1.34
P3 Ext. display resolution: 1280 X 1024

Terry Brenn, N1ACI



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[John Simmons]

Do you suppose it is RF related? Have you tried very low output power
and/or a dummy load? Possibly a bad coax connector?

73,
-John NI0K

brenntl wrote on 12/9/2018 8:54 AM:

> I have a nuisance issue with the P3 and an external display. When I apply
> 13.8VDC to the K3 and P3 simultaneously (P3 POWER button must be pushed to
> turn on the P3), the external display displays the image first followed by
> the image on the P3. This all appears to be normal operation.
> Thirty seconds after the image appears on the external display, the display
> image freezes and remains frozen and the image on the P3 remains normal. If
> I then turn the P3 POWER BUTTON off for a few seconds and then turn it back
> on, the image reappears and remains working on the P3 and the external
> monitor until I power the whole system down. This sequence of events is very
> repeatable, including the time it takes the external display to freeze, and
> has done this since I first built the P3.
> I have had the same result with 2 different displays. Reloading and
> installing the latest P3 and SVGA firmware has no effect and nothing changes
> from that described above. It does not make any difference whether I have
> the display power on before turning on the P3 or after. I have searched
> posts and found nothing on this specific problem.
>
> CONDITIONS:
> K3 FW: MCU Ver 5.64
> P3 FW: MCU Ver 1.60
> P3 Options: SVGA installed running Ver 1.34
> P3 Ext. display resolution: 1280 X 1024
>
> Terry Brenn, N1ACI
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> ______________________________________________________________
> 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]

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[Don Wilhelm]

Terry,

Since you built the P3 you should have no fear of going inside it.
Check all the connections for the SVGA option and make certain the
cables are dressed as indicated in the manual and the connectors fully
seated.

73,
Don W3FPR

On 12/9/2018 9:54 AM, brenntl wrote:

> I have a nuisance issue with the P3 and an external display. When I apply
> 13.8VDC to the K3 and P3 simultaneously (P3 POWER button must be pushed to
> turn on the P3), the external display displays the image first followed by
> the image on the P3. This all appears to be normal operation.
> Thirty seconds after the image appears on the external display, the display
> image freezes and remains frozen and the image on the P3 remains normal. If
> I then turn the P3 POWER BUTTON off for a few seconds and then turn it back
> on, the image reappears and remains working on the P3 and the external
> monitor until I power the whole system down. This sequence of events is very
> repeatable, including the time it takes the external display to freeze, and
> has done this since I first built the P3.

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