X-Junk-Score: 10 [X] X-KAS-Score: 10 [X] From: "Doug Lomheim rv9flyer13b@gmail.com" Received: from mail-oi1-f182.google.com ([209.85.167.182] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 3376155 for flyrotary@lancaironline.net; Wed, 31 Jul 2024 21:35:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.167.182; envelope-from=rv9flyer13b@gmail.com Received: by mail-oi1-f182.google.com with SMTP id 5614622812f47-3db51b8ec15so87638b6e.1 for ; Wed, 31 Jul 2024 18:35:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1722476092; x=1723080892; darn=lancaironline.net; h=to:date:message-id:subject:mime-version:from:from:to:cc:subject :date:message-id:reply-to; bh=Ff4bCx3wRTIbnV2Y77jgk4oo/R3V/KhtgP9pih0HCBc=; b=M/zoXyt8P+z6cyivAySECMGejv8XUGwoAaEzW3d7tfWCkUmq5pQzn1pPyHbfB/3Ti6 rUILB76RPrMjfqw7WGUVXGEEUvooie2goKjAnIgEdL/gb0fEDB++GRt2m/9mRIA49cFF tfKkvCgHIeKLNg8w58SXlLjrOlCRd9UhIXiAHL5aj1/W8CbYk4LNdb0OS7VapW5dP7C6 +7XrL8M/9GIObBJhphe09+lmDC6puzc0EWonGORXlq71870o9FMMujAUPWSs7PuAP3TC /4i4pqhCbVdQvYZ3xaPKFjx/BTlo+WvCP6FtiGny3m+++8yxgVBPknvlm2zOBwbDcY7Z 9Xrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722476092; x=1723080892; h=to:date:message-id:subject:mime-version:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Ff4bCx3wRTIbnV2Y77jgk4oo/R3V/KhtgP9pih0HCBc=; b=LKEPg/LiMy/Nux+rXNNDgtoXpY4MWTOlGaXdRpC3+L1M+utpnc8sRfLc8CaIOSH9sc S7GjzYFI++EfucfwkUNa+FxMGGx9Vh8qB0Gnqw+jS4oeIlc8s4dThb0EJHMK/pcXrmQL G3ZKcn+CkYBfOnBX3its2ibMO29b0Dn4MwXwF1Gfj3sDLukE2Nd0uOJKJmdB+ljewfQS MpNcMvwT/IXaIPWI++CXnuRQYPy/FIArQWf9xRlzVy7p3E6jcQWjCy/5NkK4I2RQgleT ZRTbtEozYkKtGyNkCpPMCRdBr3Nib3e0vU6xhP9JFC7GXUfs9Z3SFywfmURFOItFsiUA HHBw== X-Gm-Message-State: AOJu0Yw40Ey5FZsmaYZCiaxKiTqC9f8gSuLNS51c2AV89cTbnc/DNc7k PVfJMj/pKXKORC/WkQJ/9yhBF+bY8cVvhcvElaQo1nv2KpzZB8sPWDmOGw== X-Google-Smtp-Source: AGHT+IFxjUu1cvjQ59RtmFEO04uiulwAxG8H0ALZIx+1rCnhghJZbVs01LD0QouoB/oyMLSEvjLJ/g== X-Received: by 2002:a05:6808:138b:b0:3d5:6277:77b with SMTP id 5614622812f47-3db50d33fffmr522085b6e.12.1722476092191; Wed, 31 Jul 2024 18:34:52 -0700 (PDT) Return-Path: Received: from smtpclient.apple ([176.227.243.131]) by smtp.gmail.com with ESMTPSA id 5614622812f47-3db417ee4e2sm939222b6e.12.2024.07.31.18.34.51 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 31 Jul 2024 18:34:51 -0700 (PDT) X-Google-Original-From: Doug Lomheim Content-Type: multipart/alternative; boundary="Apple-Mail=_57275836-CD6B-4B14-BAAC-DCDD42BD9EA7" Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.15\)) Subject: Re: [FlyRotary] EM2 solder joints Message-Id: Date: Wed, 31 Jul 2024 20:34:47 -0500 To: Rotary Motors in Aircraft X-Mailer: Apple Mail (2.3654.120.0.1.15) --Apple-Mail=_57275836-CD6B-4B14-BAAC-DCDD42BD9EA7 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Thanks for the ideas Finn!=20 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=E2=80=99= ll try and clean it up and see if it shows anything more definite=E2=80=A6= Sent from my iPhone -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html = = --Apple-Mail=_57275836-CD6B-4B14-BAAC-DCDD42BD9EA7 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
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=E2=80=99ll try and clean it up and see = if it shows anything more definite=E2=80=A6


Sent from my iPhone

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html<= /i>
= --Apple-Mail=_57275836-CD6B-4B14-BAAC-DCDD42BD9EA7--