From: "Finn Lassen finn.lassen@verizon.net" Received: from pmg.Logan.com ([207.170.160.161] verified) by logan.com (CommuniGate Pro SMTP 6.5.3) with ESMTPS id 4505124 for flyrotary@lancaironline.net; Sat, 10 Jan 2026 15:23:05 -0500 Received: from pmg.Logan.com (localhost [127.0.0.1]) by pmg.Logan.com (Proxmox) with ESMTP id CB06E14FDE for ; Sat, 10 Jan 2026 15:23:05 -0500 (EST) Received-SPF: pass (verizon.net: Sender is authorized to use 'finn.lassen@verizon.net' in 'mfrom' identity (mechanism 'include:_ipspf.yahoo.com' matched)) receiver=pmg.Logan.com; identity=mailfrom; envelope-from="finn.lassen@verizon.net"; helo=sonic313-9.consmr.mail.ne1.yahoo.com; client-ip=66.163.185.32 Received: from sonic313-9.consmr.mail.ne1.yahoo.com (sonic313-9.consmr.mail.ne1.yahoo.com [66.163.185.32]) by pmg.Logan.com (Proxmox) with ESMTPS for ; Sat, 10 Jan 2026 15:23:04 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=verizon.net; s=a2048; t=1768076578; bh=aLu9J0OOqMD9na3TpEeFey0Pi4zGCTw+H4L1stYWsAc=; h=Date:Subject:To:References:From:In-Reply-To:From:Subject:Reply-To; b=WlwHdX8yqWsfT6sQQHK5dLxy9YsjGRs+ia1S2ZdX54ESsIP1oqpZQPV0q9apYVLfHiq7fMlqZsKNyNgzQ4h6Czx5PmLd4V67PwzAetEBwXB1BZJe7s3vk4b7+eJwTow1iS5hUwZwpkD/ktdjyfBqPDkQWE3NAm8nl+lai+7/C+52rdRGc+Y+Z8iIbkWyVrJYRhOdwBkBSNtq13dP3uMtKBvBCsbax+yIHKXLFNw+2TvWouUwxD3SjHeVbey9mbtufEe874vnNFbQyoN572DpkUNsng4ksiLmJyxgbRtXCeDinEJxhJlNbhk9U0fBfk3WsvnnRnabDdWfDqXhYWRfFQ== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1768076578; bh=3gXcW7FAW19gjAfr0XIUvk9/8rS61VB6M/5Jm3xEWFQ=; h=X-Sonic-MF:Date:Subject:To:From:From:Subject; b=jnRfvR67AMqKeajqRTCuQ2tqe/wSbVb6nfNABCz5wIKWKHdaEYgCNkX2umWQp52wie7RbLPEuwZTqLKg5GeLPBshu3RyekLCdRi1o2yOnOnJCGtd3zdq/SfXefsc8ElGF59ciurO4Eh73mAX7GYayCNlEskKfraQZ+2i979ZqfRrhVrGvY2bvc5AJlK6GwL3T8MV+AbCSUu8/v27STK/HY7imksYttWMynW7SwgOgPAs2L+Sak07L5mJRhFp7hLukYHuj2AIV2gAb0lKz8zqqM4RGToyQqDzHoP3v4Bg173CFoL34uoWv/cm3xnYR+i66b1lVgLUEQyyfdwHXIpA/g== X-YMail-OSG: QjmGZZAVM1lH.l1g7pZGwhNe5bjyIZDoFZ3pkv1BXi_pHTj.Vb3688Tl07SGIqw E0cUQISTEHuILQErpl6h0t2y111pPVA0G1sMX5DH_gSZAJteAKTBahZHzEK3pVdDnEjafR_txURk k0Imej39j.mWDSzl3zryqZZb1kMmSy369t_kGUKx7NMZqC0a9j3TNhQuT8tUvSkg28CkttMjcC1a XUqgpKdZYPtna_hZ60lq.REDXxSSIzqqvzfHxf2Pw4u16774YtdT2d2T.Gtl9enHKv14rRkOeEGI SW23EQTDkzpMzqXWgAFKO.W2XzQ9ICPMC7rkjbGtAq3iiuJ.Mf5fXXuh.zD0Yot36qg2VrM6d5PJ Di51211yUVyNSD9lerK5TpcTyDm3eGc4WbuDHLgaoqzzBKkfxEV51RDpz8jxNSHkZjtV8vjJlX.B Q36xESWYP_0B_dvLeAg5BUPswIBxf7SJ0FyPg1RkRWvC3kr54wHA78oQ1qEModyxusWJ0ZXx4FpB GAWFWbg4UmT1KUz2e2orAO1kzdnVP7C8Ya1WiudxsujZ0yZO2No6bBfk5icrZK0rtboXbThPX3bi AQqmy4G4jZJaEjICyFlGVGgS7DEUpKhD6NDSdGaXfH2OX8uA4hi5rt2lJ39Ux3YFqe1CyqmUSee3 lbrK0LfsVKhEMhKcA3Fqf8Jv7dzumiHBsX_cneOpuoYXakQZ2zSxu34SfeDixNtoEx9heJsb38XT ySXHaXo9LinbaqQz9sdcC2Y1rRjvwl89ityi8usGxXSxPB1o3ryM3u4GxTYBpf1x_TqVKSaxicmq q5UfpGzWgL_6.8kEs_hP5vNt9CIEeCZElE66Et8I9rKYelr5iyhRPnN.hd3O9MelIJFyRtrdR2a9 02Xc6wpzCWgJ1KPBT1knThUMg0b.QZXYVTBRFUn21tpBru94Y7F9FGfvOqQa53Y4vNcHHz3XyrZf n7UpmMU0xF2ut41GNA8u38IdywjWgIl8wWqPvrTla1..wPGY8po0kCRZ540G28KOYiY4X7YBJHzm 1jxyIkOSum3XA69BerM5kBxhGNcOuaP.QkDdUQR1B57IPiUECnVsYa.mQCh0a9_DaKSu6w_CERtl JEoxuVOwXYFsifFpF1MxUBIpuweDA25HWaBbIbTXdGS_2JusBbW8SY6vmfwN93o4Kil7ASRA2PhW J_Q_8DqSBmcZf42yozlWd4Ns1f8YihKi2ByccBXB0rc0zMXfZZIfNpVYcGiY2Hy_u8eZ3zgXOMuL HyX_QAnbfKtWvM2KeYNfxeZj6R0b.Qmcy5auVwxQiXqxseKtHlEEVWDybx868eoqlW1D7HJ86clE P0KD26yGsQQiT3w63Sa23DcbxoLiA1hCOjH6btsiuyINKONxJWlvLJjuouHHbFe6uHfS9ZuVcgvn F_NOnU46ANk61ehJgTRJV5f4KHlg3S6RkfRZy_ty23b6xBDiVebc_JhtQW53KAD1ZK0NelT66bht XYbNFM.JOeGVdaYMBnKaaXQ718PsELp_k7_1PbQVFPEA8JU0WBZg1ZCmeyyH8jsx0gVRS1NowHRg ludqIoSoXK50XB19gpOJT5.6ssGITkKlPEtQ25mvyKSc7SQb.9fvrqw7I4CGuKfSProZzONKWSBv xSCgtzz2_GaF_jdHB4jU66xUPrhITUshqi7QSa5xp5Ublh5JwvMN09EpuwO0.RSjJ7AGydSKqtfR Mih__qMa5qMBIbZRdkNRk76c9Cb5MF8SJ0bPd0F8oStomW5J2C7_AbPRJKbb5PM_nb0kOvtGnT.2 .O4S458wnSCQE_VbyByGy1GrkALH0f_fv5d3p4virC3FiAGXdsY_SItXBRIkNNHec8nlzgiXkKhU W6mz2WjSBoXYzeaDmqkWPrSgn7v8r5XZ5v6a955OKZGEuAYQMYbVj0foC5ssFGugMFKE4MbtAaAG 7qcBM9ohBajBKj91czC7TAuZizwwXzbnXvzFJrQmCOCobywSuOwESTdCbplabeUFCW1PSlTa393_ XM2OxXy4HEYcYrjJCVB_qMhisXNypUNOYYNgqMmB5atfQt1OI3AnDJ92P.UOpjinbNtGlaRNZqq. s16ZeAgKLuAcDgreBuyqmAcQyEQWdd6boduz7zgIOnPTeyJ9vMB897Uu3j6ipgVKn8NDGYUiPuGp kARF2EGHkwnrnmIWGB3oqVtQijGuEbTR_O_ADzl_h.PC.SG8rJijt7Z67BGSBLptxx.pkbSuUSTq rSW1mxX.mHbI2tf2VMwbm8k7U3Pgq4BWZrkhk9pxe6aBaUXFmvyIsH5egYllAKAny9EhjT6WN5A- - X-Sonic-MF: X-Sonic-ID: 06aa2b77-8fb7-472a-a63b-467503c6479a Received: from sonic.gate.mail.ne1.yahoo.com by sonic313.consmr.mail.ne1.yahoo.com with HTTP; Sat, 10 Jan 2026 20:22:58 +0000 Received: by hermes--production-bf1-67cd47dbf4-xf8dc (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID f6647e3ece01ac2fb1eee0ee49e29293; Sat, 10 Jan 2026 20:22:53 +0000 (UTC) Content-Type: multipart/alternative; boundary="------------q0r0u2iGvQSlH0XrpbcWtkpH" Message-ID: Date: Sat, 10 Jan 2026 15:22:37 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: =?UTF-8?B?UmU6IFtGbHlSb3RhcnldIFJlOiBSZW5lc2lzIEVDMiDigJxB4oCdIENv?= =?UTF-8?Q?mputer_INOP?= To: Rotary motors in aircraft References: Content-Language: en-US In-Reply-To: X-Mailer: WebService/1.1.24866 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.aol X-SPAM-LEVEL: Spam detection results: 0 AWL -0.225 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_PASS -0.1 DMARC pass policy HTML_FONT_SIZE_HUGE 0.001 HTML font size is huge HTML_MESSAGE 0.001 HTML included in message KAM_MXURI 1.5 URI begins with a mail exchange prefix, i.e. mx.[...] RCVD_IN_MSPIKE_H2 0.001 Average reputation (+2) SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record WEIRD_PORT 0.001 Uses non-standard port number for HTTP This is a multi-part message in MIME format. --------------q0r0u2iGvQSlH0XrpbcWtkpH Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Take the spark plugs out, ground them all with a wire and put the EC2 into ignition test mode (mode 8 and Store button in my manual -- check Troubleshooting section in your manual). If plugs are firing and now that we know that the MCU in controller A works, you could try to put controller B's MCU in A's place in case controller A's MCU's programming somehow got messed up. It's hard to believe that the CAS circuitry for controller A is damaged, but not B's because much of it is shared -- unless yours is a unicorn with backup CAS input. Carefully remove the MCUs from their sockets using a paperclip with a 2mm tip bend at one end. Carefully lift up one corner a bit, then the other one and so on until the chip is out. Of course make sure you prevent damage by static electricity. Oh, yeah, and read the manual. A lot of what I've written is covered there. Finn On 1/10/2026 12:07 PM, Doug Lomheim rv9flyer13b@gmail.com wrote: > Finn:  Thanks so much for these additional steps to try! > > Looks like we can rule out “0, 3, 4” (?) since the injectors click > away and the leading and trailing plugs fire up nicely? > > Can’t we also rule out “1” (Injector drivers) since the injectors > operated nicely in Mode 0 when “priming”? > > Also, does this rule out a possible CAS issue…maybe the CAS circuit >  is somehow used in firing the plugs at “3,000 rpm” in mode 8? > > Doug > > > > Message Header.gif > > > Undecoded Message.gif > > > Would be interesting to know which part of the A controller failed. > 0) 5V power regulator > 1) Injector drivers > 2) Ignition coil drivers > 3) Crank angle sensor input. > 4)  MCU itself. > > Do the injectors click when you press the Store button or when you put > it into injector test mode? > Do the spark plugs fire when you put it into test mode? > If either of those work we can rule out 0, 3 and 4. > > As for compatibility, the main difference between 13B and Renesis is > the crank angle sensor output. The 13B has magnetic pickups and the > Renesis has a timing wheel, so you can't switch them without > reprogramming. > Then there is dwell time -- depends on iginition coils you use. > I suspect that other differences can be handled by tuning. > > Finn > > > > >> On Jan 9, 2026, at 4:59 PM, DOUGLAS LOMHEIM wrote: >> >> 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 > --------------q0r0u2iGvQSlH0XrpbcWtkpH Content-Type: multipart/related; boundary="------------PsL0knIgEWcRygkQT266Ee1E" --------------PsL0knIgEWcRygkQT266Ee1E Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit
Take the spark plugs out, ground them all with a wire and put the EC2 into ignition test mode (mode 8 and Store button in my manual -- check Troubleshooting section in your manual).

If plugs are firing and now that we know that the MCU in controller A works, you could try to put controller B's MCU in A's place in case controller A's MCU's programming somehow got messed up.

It's hard to believe that the CAS circuitry for controller A is damaged, but not B's because much of it is shared -- unless yours is a unicorn with backup CAS input.

Carefully remove the MCUs from their sockets using a paperclip with a 2mm tip bend at one end. Carefully lift up one corner a bit, then the other one and so on until the chip is out. Of course make sure you prevent damage by static electricity.

Oh, yeah, and read the manual. A lot of what I've written is covered there.

Finn

On 1/10/2026 12:07 PM, Doug Lomheim rv9flyer13b@gmail.com wrote:
Finn:  Thanks so much for these additional steps to try!  

Looks like we can rule out “0, 3, 4” (?) since the injectors click away and the leading and trailing plugs fire up nicely?

Can’t we also rule out “1” (Injector drivers) since the injectors operated nicely in Mode 0 when “priming”?  

Also, does this rule out a possible CAS issue…maybe the CAS circuit  is somehow used in firing the plugs at “3,000 rpm” in mode 8?

Doug 



 Message Header.gif

Undecoded Message.gif
Would be interesting to know which part of the A controller failed.
0) 5V power regulator
1) Injector drivers
2) Ignition coil drivers
3) Crank angle sensor input.
4)  MCU itself.

Do the injectors click when you press the Store button or when you put it into injector test mode?
Do the spark plugs fire when you put it into test mode?
If either of those work we can rule out 0, 3 and 4.

As for compatibility, the main difference between 13B and Renesis is the crank angle sensor output. The 13B has magnetic pickups and the Renesis has a timing wheel, so you can't switch them without reprogramming.
Then there is dwell time -- depends on iginition coils you use.
I suspect that other differences can be handled by tuning.

Finn



On Jan 9, 2026, at 4:59 PM, DOUGLAS LOMHEIM <dlomheim@aol.com> wrote:

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


--------------PsL0knIgEWcRygkQT266Ee1E Content-Type: image/gif; name="Message Header.gif" Content-Disposition: inline; filename="Message Header.gif" Content-Id: Content-Transfer-Encoding: base64 R0lGODdhCgANAPcAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwMDcwKbK8AAAAAAAKgAAVQAA fwAAqgAA1AAqAAAqKgAqVQAqfwAqqgAq1ABVAABVKgBVVQBVfwBVqgBV1AB/AAB/KgB/VQB/ fwB/qgB/1ACqAACqKgCqVQCqfwCqqgCq1ADUAADUKgDUVQDUfwDUqgDU1CoAACoAKioAVSoA fyoAqioA1CoqACoqKioqVSoqfyoqqioq1CpVACpVKipVVSpVfypVqipV1Cp/ACp/Kip/VSp/ fyp/qip/1CqqACqqKiqqVSqqfyqqqiqq1CrUACrUKirUVSrUfyrUqirU1FUAAFUAKlUAVVUA f1UAqlUA1FUqAFUqKlUqVVUqf1UqqlUq1FVVAFVVKlVVVVVVf1VVqlVV1FV/AFV/KlV/VVV/ f1V/qlV/1FWqAFWqKlWqVVWqf1WqqlWq1FXUAFXUKlXUVVXUf1XUqlXU1H8AAH8AKn8AVX8A f38Aqn8A1H8qAH8qKn8qVX8qf38qqn8q1H9VAH9VKn9VVX9Vf39Vqn9V1H9/AH9/Kn9/VX9/ f39/qn9/1H+qAH+qKn+qVX+qf3+qqn+q1H/UAH/UKn/UVX/Uf3/Uqn/U1KoAAKoAKqoAVaoA f6oAqqoA1KoqAKoqKqoqVaoqf6oqqqoq1KpVAKpVKqpVVapVf6pVqqpV1Kp/AKp/Kqp/Vap/ f6p/qqp/1KqqAKqqKqqqVaqqf6qqqqqq1KrUAKrUKqrUVarUf6rUqqrU1NQAANQAKtQAVdQA f9QAqtQA1NQqANQqKtQqVdQqf9QqqtQq1NRVANRVKtRVVdRVf9RVqtRV1NR/ANR/KtR/VdR/ f9R/qtR/1NSqANSqKtSqVdSqf9SqqtSq1NTUANTUKtTUVdTUf9TUqtTU1AAAAAwMDBkZGSYm JjMzMz8/P0xMTFlZWWZmZnJycn9/f4yMjJmZmaWlpbKysr+/v8zMzNjY2OXl5fLy8v/78KCg pICAgP8AAAD/AP//AAAA//8A/wD//////ywAAAAACgANAAAINgDxCRw4EAC+fwgTIjT4DwCA AwIXHlSYkKHDhxEZUpTYEONEjRstOoR4ECRFkSQ5bux4saXDgAA7 --------------PsL0knIgEWcRygkQT266Ee1E Content-Type: image/gif; name="Undecoded Message.gif" Content-Disposition: inline; filename="Undecoded Message.gif" Content-Id: Content-Transfer-Encoding: base64 R0lGODdhCgANAPcAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwMDcwKbK8AAAAAAAKgAAVQAA fwAAqgAA1AAqAAAqKgAqVQAqfwAqqgAq1ABVAABVKgBVVQBVfwBVqgBV1AB/AAB/KgB/VQB/ fwB/qgB/1ACqAACqKgCqVQCqfwCqqgCq1ADUAADUKgDUVQDUfwDUqgDU1CoAACoAKioAVSoA fyoAqioA1CoqACoqKioqVSoqfyoqqioq1CpVACpVKipVVSpVfypVqipV1Cp/ACp/Kip/VSp/ fyp/qip/1CqqACqqKiqqVSqqfyqqqiqq1CrUACrUKirUVSrUfyrUqirU1FUAAFUAKlUAVVUA f1UAqlUA1FUqAFUqKlUqVVUqf1UqqlUq1FVVAFVVKlVVVVVVf1VVqlVV1FV/AFV/KlV/VVV/ f1V/qlV/1FWqAFWqKlWqVVWqf1WqqlWq1FXUAFXUKlXUVVXUf1XUqlXU1H8AAH8AKn8AVX8A f38Aqn8A1H8qAH8qKn8qVX8qf38qqn8q1H9VAH9VKn9VVX9Vf39Vqn9V1H9/AH9/Kn9/VX9/ f39/qn9/1H+qAH+qKn+qVX+qf3+qqn+q1H/UAH/UKn/UVX/Uf3/Uqn/U1KoAAKoAKqoAVaoA f6oAqqoA1KoqAKoqKqoqVaoqf6oqqqoq1KpVAKpVKqpVVapVf6pVqqpV1Kp/AKp/Kqp/Vap/ f6p/qqp/1KqqAKqqKqqqVaqqf6qqqqqq1KrUAKrUKqrUVarUf6rUqqrU1NQAANQAKtQAVdQA f9QAqtQA1NQqANQqKtQqVdQqf9QqqtQq1NRVANRVKtRVVdRVf9RVqtRV1NR/ANR/KtR/VdR/ f9R/qtR/1NSqANSqKtSqVdSqf9SqqtSq1NTUANTUKtTUVdTUf9TUqtTU1AAAAAwMDBkZGSYm JjMzMz8/P0xMTFlZWWZmZnJycn9/f4yMjJmZmaWlpbKysr+/v8zMzNjY2OXl5fLy8v/78KCg pICAgP8AAAD/AP//AAAA//8A/wD//////ywAAAAACgANAAAIPgDxCRw4EAC+fwcQKjxgMCHD hAD+GUQYEcDDhhIzVjwIkSJDfA8zQjxYUWRDixVHmnSI0aHCiS5ZAphJs2ZAADs= --------------PsL0knIgEWcRygkQT266Ee1E-- --------------q0r0u2iGvQSlH0XrpbcWtkpH--