From: "Finn Lassen finn.lassen@verizon.net" <flyrotary@lancaironline.net>
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Date: Wed, 31 Jul 2024 11:54:52 -0400
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Subject: Re: [FlyRotary] EM2 solder joints
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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That is one fancy display.
I think you could replace it with an 20x4 LCD display. Suspect it would 
be a direct drop-in with the 15 pin connector. Yes, you'd have to figure 
out the backlight (A and K pins) and maybe contrast.

But first check for +5V (you could do that with the display unplugged 
and plugged in).
If the 5V regulator is bad or +5V is shorted to ground then anything 
else is pointless.

Next thing I would try is re-seat the CPU chip.

Finn

On 7/31/2024 10:55 AM, DOUGLAS LOMHEIM dlomheim@aol.com wrote:
> Group:
> Could corrosion like this be indicative of a poor solder joint?  I’ll try and clean it up and see if it shows anything more definite…
>
>
> Sent from my iPhone
>
> --
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