<div dir="ltr">Hey guys, it&#39;s been a while, but 7 years ago they were, the same, and the ribbon cable/location of the module denoted which one was the master... <br><br>If I remember correctly, the one closest to the mainboard is supposed to be the &quot;master&quot;. <br><br>If you swap out the outside one, and it&#39;s still not powering up, then swap them, you can also test it with just one module to eliminate any other issues. <div><br></div><div>If you still don&#39;t get power-up, there is either a control card issue (I see you&#39;ve done the power supply and control card as well) or a cable isn&#39;t seated correctly. </div><div><br></div><div><br><div><br></div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div style="float:left;padding:1px 10px 0 0"><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"><img src="https://imgur.com/hENEoQQ.png" alt="" style="padding:3px 0px 0px 10px;float:left;margin-right:10px;width:98px;height:115px"></a><div style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:14px;line-height:20px;font-family:Arial,Helvetica,sans-serif;margin:0px"><font color="#bb1a1d">Steve Higgins \u22c5 
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                Hi Drake,<br><br>
Yes on all accounts. <br><br>
It can run on 1 as well. <br><br>
Jay<br>
Peltz power. <br><br><br><br>
&gt; On Jan 4, 2020, at 8:17 AM, <a href="mailto:drake.chamberlin@redwoodalliance.org" target="_blank">drake.chamberlin@redwoodalliance.org</a> wrote:<br>
&gt; <br>
&gt; \ufeff<br>
&gt; Hello Wrenches,<br>
&gt; <br>
&gt; Are the power modules in a Radian the same?  Are the left and right ones interchangeable?  What designates the master as such? Is it the ribbon cable connection to the control stack?<br>
&gt; <br>
&gt; <br>
&gt; Thank you,<br>
&gt; <br>
&gt; Drake<br>
&gt; <br>
&gt; <br>
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