Mailing List flyrotary@lancaironline.net Message #67671
From: Doug Lomheim rv9flyer13b@gmail.com <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] EM2 solder joints
Date: Wed, 31 Jul 2024 20:34:47 -0500
To: Rotary Motors in Aircraft <flyrotary@lancaironline.net>
Thanks for the ideas Finn! 


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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