[Elecraft] P3 Failure, and question

[Howard Saxion]

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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