Mailing List flyrotary@lancaironline.net Message #67978
From: DOUGLAS LOMHEIM dlomheim@aol.com <flyrotary@lancaironline.net>
Subject: Renesis EC2 “A” Computer INOP
Date: Fri, 9 Jan 2026 16:59:46 -0600
To: Rotary Motors in Aircraft <flyrotary@lancaironline.net>
My Renesis “A” processor went INOP a few weeks ago, and I’ve done the following:  a). Verified 12 V to BOTH EC2 power pins.  b).  Verified continuity from OAT two wire thermistor to EC2.  c).  Replaced thermister with the one on my 9A project.  d).  Opened the EC2 to ensure the micro processor was still seated in its’ socket.  The “A” side is still not functioning, and must be started on the “B” side, and when switched to “A”, it immediately dies.   Are there any other trouble-shooting steps I should try?

Thx.  Doug P.S.  I believe Tracy did some special EC2 processing on  Renesis EC 2s, vs RX-7 13B?  I think I have two extra EC2s, so could swap them out IF they are compatible with each other…

Thx for your inputs, Doug
Sent from my iPhone

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