[Elecraft] [P3] P3 woes - internal display inop

[Alan Bloom]

Hi Dave,

Another possibility is that perhaps one of the display connectors has 
come loose or is making a bad connection.

I normally wouldn't recommend this since these tiny connectors are kind 
of tricky, but since the P3 isn't working anyway, there's nothing to lose.

There are two surface-mount connectors located underneath the display on 
the front-panel board: a 4-pin connector for the display backlight and a 
40-pin connector for the rest of the display electronics.

To access them, remove the front-panel board from the P3 and then remove 
the LCD display by gently prying it free from the rubber holder.  Be 
careful so as not to put stress on the flex circuits going to the two 
connectors.

Examine each of the connectors to see if it looks like the flex circuits 
are properly seated in them.  To re-seat one, open the connector by 
using a fingernail to pop open the top.  After re-positioning the flex 
circuit, press the connector top down again until it clicks.

As I say, this is a rather delicate operation (which is why the front 
panel came pre-assembled in P3 kits).  So you might want to consider 
sending the P3 in for service and let the experienced Elecraft techs 
handle it.

Alan N1AL



On 2/24/23 10:51, Dave New, N8SBE wrote:
> Mike,
>
> Thanks for the idea!  I hadn't considered that mitigation.
>
> Anyone else have ideas for a permanent corrective action?
>
> 73,
> -- Dave, N8SBE
>
> On 2023-02-24 09:13, Mike Flowers wrote:
>> Hi Dave,
>>
>> If you have a way of sending P3 control commands to the P3, there may 
>> be a
>> chance that you could the resolution of the external display set to a
>> useable value.
>>
>> I've attached my copy of the P3 Programmer's Reference.
>>
>> - 73 and good DX de Mike, K6MKF, NCDXC Life Member
>>
>>
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