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It worked fine optically until the problem started.</div>
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Problem started with it would power up briefly and then quickly go dark. Grad student bought a replacement power supply in hopes that this would solve the issue. This did not provide improvement. Now the behavior is worse in that laser is completely unresponsive.
Totally dark. </div>
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Could be as simple as loose wire inside head where DC power comes in. Could be a bad board. Could be a failed capacitor somewhere in it. Going on 12 years old.</div>
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I will likely open it up in the next week to investigate. </div>
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The cord between power supply and laser head has two larger conductors for DC power and 5 smaller conductors. I would like to know if there is a logic connection between head and power supply via these smaller wires or if the power supply is "dumb".</div>
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Do these smaller wires perform any function or is this 7 pin (or 2 +5 pin) connector some interesting standard that I have not before encountered?</div>
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This problem just fell in my lap yesterday.</div>
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-Michael.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Prashant Srinivasan <prashant@ucsb.edu><br>
<b>Sent:</b> Wednesday, December 3, 2025 9:25 AM<br>
<b>To:</b> labnetwork@mtl.mit.edu <labnetwork@mtl.mit.edu>; Johnson, Michael W <mjohnso6@tulane.edu><br>
<b>Subject:</b> Re: [labnetwork] Fianium WhiteLase SC-400-4 supercontinuum fiber laser…4 W</font>
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<p>What is wrong with it? What are the symptoms? Issue with the driver (electronics), burnt fiber, dead pump diode?</p>
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<div class="x_moz-cite-prefix">On 12/2/2025 3:41 PM, Johnson, Michael W wrote:<br>
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Does anyone have a repair option for a 2014 vintage NKT Photonics Fianium WhiteLase SC-400-4 supercontinuum fiber laser…4 W?</div>
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The manufacturer has done an end of life on it and will no longer support it. Obsolete.</div>
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Sometimes these companies have ex employees that open a shop to service older gear.</div>
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Can't get schematics from the company.</div>
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Any leads would be appreciated.</div>
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-Michael.</div>
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Tulane University </div>
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TINI</div>
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<pre class="x_moz-quote-pre">_______________________________________________
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<pre class="x_moz-signature" cols="72">--
Prashant Srinivasan,
Teaching Cleanroom Manager
Department of Electrical and Computer Engineering
University of California Santa Barbara
Santa Barbara, CA 93106
<a class="x_moz-txt-link-freetext" href="https://www.ece.ucsb.edu/department-resources/electronics-shop/tcr" originalsrc="https://www.ece.ucsb.edu/department-resources/electronics-shop/tcr">https://www.ece.ucsb.edu/department-resources/electronics-shop/tcr</a></pre>
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