[Elecraft] P3 Failure, and question

[Howard Saxion]

I do not.  The repair invoice from Elecraft only indicated a faulty I/O board which was replaced. 
73
Howard/WX7HS

> On Apr 12, 2021, at 09:35, Dave New <n8sbe at arrl.net> wrote:
> 
>  Do you know just what failed on the I/O board?  Was it possibly due to static discharge?
> 
> I tend to leave an antenna connected, except during active weather, but curious if there is something sensitive in the P3 I/O area that can fail easily from a surge, like the old RS-232 circuitry in the original K3.
> 
> Thanks,
> 
> -- Dave, N8SBE
> 
> Quoting Howard Saxion via Elecraft <elecraft at mailman.qth.net>:
> 
>> I had a similar problem with my P3 with SVGA. I had to cycle through the on-off switch a few times before it would fully power up. Once powered up, everything was working and stable.  I tried reseating the ribbon cables but that had no effect.
>> 
>> I contacted Elecraft technical support and they had me try a few things but that did not solve the problem. I sent it to Elecraft and it turned out that the I/O board was faulty. The repair cost was approximately $200 for a new board and labor.
>> 
>> 73
>> Howard/WX7HS
>> 
>>>> On Apr 12, 2021, at 06:05, Dave Cole <dave at nk7z.net> wrote:
>>> 
>>> Rick,
>>> 
>>> Thank you!  I appreciate the datapoint in this.  I was just looking over the schematic and came to the same conclusion...  It looks like a backlight problem to me as well...  I tried to find a datasheet on teh 4538 IC that appears to control it, but alas, nope.  I got mine to come back on by power cycling it as well...
>>> 
>>> Hopefully someone has actually fixed this, and knows which cap...
>>> 
>>> 73, and thanks,
>>> Dave (NK7Z)
>>> https://www.nk7z.net
>>> ARRL Volunteer Examiner
>>> ARRL Technical Specialist, RFI
>>> ARRL Asst. Director, NW Division, Technical Resources
>>> 
>>>> On 4/12/21 5:27 AM, Rick Stanback wrote:
>>>> My P3 does the same thing.  If i keep cycling power it eventually comes
>>>> on and works.  I suspect there is a bad capacitor in the LCD backlight
>>>> power.  I have not actually looking into it yet.
>>> 
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