[Elecraft] P3 gone BLACK

[Dave (NK7Z)]

Hi,

I had this exact problem, the problem gets worse with time...  At least 
mine did.  I sent in my P3 to Elecraft repair, and got it back a month 
or so later working...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 8/22/22 10:25, Dave New wrote:
>   Allen,
> 
> I have this issue with my P3, and it seems to be related to internal (to 
> the P3) power rail problems.
> 
> I have the SVGA adapter, and the external display always works, even if 
> the P3 display isn't.
> 
> After leaving the power on for a minute or less, I can quickly toggle 
> the power button on the P3, and then the internal dispaly comes up.
> 
> The theory is that during initial power on, the power rail comes up too 
> slowly to get a clean power-on reset to the internal display 
> controller.  Note that the P3 has been working fine for me since I 
> purchased the kit about ten years ago.  This is a recent issue, showing 
> up about a year ago, as far as I can tell.
> 
> Some suggestions have been to replace one or more power supply 
> capacitors assuming they've become flakey, or to plug the P3 power into 
> the station supply, instead of the 12VDC output on the back of the K3s 
> (assuming that the 12VDC output is weak or slow to rise during K3s power 
> on).  I've not tried either of those solutions, preferring to just 
> mitigate the issue by toggling the power, which doesn't happen very 
> often, because I tend to leave the rig on most of the time.
> 
> Hope that helps, and 73,
> 
> -- Dave, N8SBE
> 
> Quoting n5xz at earthlink.net:
> 
>> My P3 screen has gone black. When I plug in the power, I still hear some
>> very quiet relay click.  Any quick ideas?
>>
>> Full disclosure: I suffered a voltage spike some time ago which took 
>> out my
>> K3 some time ago (it is at Elecraft now); P3 still operated but the POWER
>> switch no longer worked, i.e. it was on all the time whenever power was
>> applied. (I am borrowing a K3 from a very, very good friend).
>>
>> Does anyone work on P3's besides Elecraft?
>>
>> Allen R. Brier N5XZ
>>
>> 1515 Windloch Lane
>>
>> Richmond, TX 77406
>>
>> 713-705-4801
>>
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