<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">David,<div><br></div><div>Kyocera KC-120-1’s from 1999 to Dec 2002 will fail from a defective solder joint. Although out of warranty, they are still be warranted by Kyocera and replaced with a remanufactured KC-120-1R. Contact them (<a href="mailto:Rae.Parafiniuk@kyocera.com" style="color: blue; background-color: rgb(255, 255, 255);">Rae.Parafiniuk@kyocera.com</a>) with the serial numbers and mfg dates to get an RMA started. </div><div><br></div><div>We keep the remanufactured units in stock at our store because we see so many of these. Kyocera will also pay labor to replace them. <br><div apple-content-edited="true">
<br>Thank you,<br><br>Larry Crutcher<br>Starlight Solar Power Systems<br><br><br><br><br>
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<br><div><div>On Jun 11, 2014, at 4:47 PM, Dave <<a href="mailto:dave@independentpowerllc.com">dave@independentpowerllc.com</a>> wrote:</div><br class="Apple-interchange-newline"><div><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal">Wrenches,<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I troubleshot an underperforming off grid array today and found low Voc's in 4 out of 10 KC-120's (nominal 12v modules rated at 21.5 Voc and 7.45 Isc). Modules are vintage 2000.<o:p></o:p></p><p class="MsoNormal">Under modest sunlight (500 to 600W per M sqd) 6 modules measured from 18 to 19 Voc and 4 Isc. Four modules measured from 9.6 to 13.7 Voc and 4 Isc.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I was chased off the roof by a coming thunderstorm and did not check for bad diodes. These modules have nice old school J-boxes with 6 diodes per each module.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Am I looking at a diode issue, or failing modules?<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Thanking you in advance for your time,<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">David Palumbo <o:p></o:p></p><p class="MsoNormal">Independent Power LLC<o:p></o:p></p><p class="MsoNormal">462 Solar Way Drive<o:p></o:p></p><p class="MsoNormal">Hyde Park, VT 05655<o:p></o:p></p><p class="MsoNormal">802-888-7194<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p></div></div>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html<br><br>List rules & etiquette:<br>www.re-wrenches.org/etiquette.htm<br><br>Check out or update participant bios:<br>www.members.re-wrenches.org<br><br></div></div><br></div></body></html>