Emax

All-

I have installed 1 Emax rack and 3 keyboards with OLED.
I have just started sending these out and haven't got any complaints yet.

But in fairness / transparency and knowing that people expect a good
solution, I am sending this email.

I believe everyone knows that I have worked with people in good faith and
continue to do so.
So I wanted to relay what I found in my experience doing the 4
installations..

I have found that on the Emax Rack that you may have to reseat the
connector to the logic board once or twice if you have a bad connection.

The behavior I saw was an UNDERLINE  on the top row of characters.
But where you have had some glitchy / odd display behavior it is most
likely due to a poor connection.
So reseat that connector a couple times if needed.
This solved the issue I saw on Emax Rack.


On the Emax keyboards I have seen some intermittent pixels on the display
not part of the letters, and a little flickering sometimes.
Again- this is a connection issue either at the logic board or at the pass
through.
Where you have had some glitchy / odd display behavior before, a new
display doesn't fix that.

With that said, it does seem to be a connection issue and not due to a
problem with the display itself.

The Emax rack DID NOT and still does not (several days later) show any
signs of this flickering / random pixel lighting behavior.
Therefore, it is my belief this is mainly due to the pass through connector
which mounts the display to the control panel board in a keyboard.

I saw this on Emax 1 and 2.

Possible remedies:
1) Clean the pass through prior to installing the new display with some
contact cleaner
- when inserting the display after cleaning, you may want to insert it 2 or
3 times to help make the connection better.

2) Replace the connector ( I am researching viable options for this
presently).

3) Solder the display on (this would permanently fix it)- spacing might be
a consideration.

Now- the new displays have gold pins and therefore aren't supposed to
oxidize (which is what causes the bad connections).
The old connectors in Emax are TIN plated.
Therefore, they can and probably have oxidized to some point.

I will try and determine both a TIN and GOLD plated option for replacement
of the connector which you can then get from source (once I have some part
numbers).

These parts shouldn't be expensive, if you want to go that route.

Again- just trying to let everyone know about the POTENTIAL for a concern.
The flickering isn't that bad, but if you are looking for perfect
operation, that is why I am sending this mail out.

When I have the part #s I will send out another email (though it might be
tonight US time before I can do that).

Regards,
Ted


[Non-text portions of this message have been removed]