Message

X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 02 Feb 2008 14:04:25 -0500 Message-ID: X-Original-Return-Path: Received: from mta1.glocalnet.net ([213.163.128.203] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2711988 for lml@lancaironline.net; Sat, 02 Feb 2008 05:35:17 -0500 Received-SPF: none receiver=logan.com; client-ip=213.163.128.203; envelope-from=stockmos@algonet.se Received: from granliden (81.230.41.238) by mta1.glocalnet.net (7.3.130) (authenticated as stockmos@algonet.se) id 479F2F8200083550 for lml@lancaironline.net; Sat, 2 Feb 2008 11:34:35 +0100 From: "Wretlind Family" X-Original-To: "LancairMailingList" Subject: VM1000 problems on low volt now solved X-Original-Date: Sat, 2 Feb 2008 11:38:48 +0100 X-Original-Message-ID: <000001c86587$cfac1210$0100a8c0@granliden> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C86590.31707A10" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 Importance: Normal Thread-Index: Achlh8sbMsYCEdkjQo+FBpWjbaDfgA== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C86590.31707A10 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thank you all for your advices and specially Brent Regan whose advice definetely solved my problem. No help at all from the VM1000 company now overtaken by JP Instruments showing no interest at all to help old customers. What should we do without the LML forum? I have a Lancair IV with a 14 volt system and my problem was that VM1000 went dark when = voltage dropped below 13 volt which happens all the time when you activate the hydraulic pump. VM1000 should work down to 9 volt. From the beginning = my VM1000 worked fine but 20 hours from first flight the problem started. =20 The reason for this reset was a resistor R26 in the DPU (Digital = Processing Unit) that had changed from 10 ohm to 35 ohm. This is a serial resistor feeding a 5 volt regulator. The input voltage to the regulator became = too low and the regulator could not deliver the right voltage to the = connected IC (Integrated Circuit). When changing the resistor to the right value the VM1000 function down = to 9 volt. The faulty resistor was not burned but had for some reason change = its value. =20 Thank you all! =20 Christer Wretlind, Stockholm, Sweden =20 ------=_NextPart_000_0001_01C86590.31707A10 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Thank you all for your advices=20 and specially Brent Regan whose advice definetely solved = my=20 problem. No help at all from the VM1000 company now overtaken by JP = Instruments showing no interest at all to help old customers. What = should we do=20 without the LML forum? I have a Lancair IV with a 14 volt system = and my=20 problem was that VM1000 went dark when voltage dropped below 13 volt = which=20 happens all the time when you activate the hydraulic pump. VM1000 = should=20 work down to 9 volt. From the beginning my VM1000 worked fine but 20 = hours from=20 first flight the problem started.

The reason for this reset was a=20 resistor R26 in the DPU (Digital Processing Unit) that had changed = from 10=20 ohm to 35 ohm. This is a serial resistor feeding a 5 volt regulator. The = input=20 voltage to the regulator became too low and the regulator could not = deliver the=20 right voltage to the connected IC (Integrated Circuit).

When changing the resistor to the right value the VM1000 = function down=20 to 9 volt. The faulty resistor was not burned but had for some reason = change its=20 value.

Thank you all!

Christer Wretlind, Stockholm,=20 Sweden

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