On Sun, 27 Nov 2011, Dave wrote:
Date: Sun, 27 Nov 2011 13:59:35 -0500 From: Dave <e...@dc9.tzo.com> Reply-To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Subject: Re: [Emc-users] PID & BLDCOn 11/27/2011 9:25 AM, Viesturs L??cis wrote: 2011. gada 27. novembris 12:17 Viesturs L??cis <viesturs.la...@gmail.com> rakst??ja:I checked all 25 leads in D525-to-7i43 cable, they all are good. The only remaining thing, where the problem can be, is the 7i43 card itself (or its drivers).I have an update: Card is receiving 4,83 V, but no LEDs turn on, when I turn on the power switch for the card. Any ideas, where should I look? Viesturs ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
If I pull the 5v connector, and leave the 7i43 connected only via the EPP cable, I have only a dim yellow PWR light on the 7i43. With 5v on the plug I have a bright yellow PWR light and two RED LEDS to the right of the PWR light.
This is with EMC2 not running.4.83 is low. I usually see just above 5 volts on most power supplies that I check with a DVM.
You may want to try another power supply and pray that your 7i43 switches on with a higher voltage.Peter, is chip U1, the power supply regulator chip? It is an 8 lead chip.If you can find another one, it might be user repairable if that chip is blown.But you better sharpen your soldering iron tip! Two magnifying glasses and I still can't make out the part number due to the red dot.Dave
The 7I43 is not picky about its 5V supply, it will run at 4.5V
The 3.3V regulator is a 6 pin MSOP so not good for non-expert repair
Peter Wallace
Mesa Electronics
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------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d
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