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Prying Eyes: Reviving a trusty switch

24 Sep 2014  | Brian Dipert

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Turning over the PCB produces no building blocks of any note ... that is, unless you're into passives and solder joints:

So what caused the DGS-1005D to expire? One possibility that automatically comes to mind, especially with a device this old and one manufactured in that particular timeframe, is one-to-several faulty aluminium electrolytic capacitors. This possible explanation is certainly a feasible one, although visual inspection doesn't reveal candidates that are obviously bulging, leaky, or otherwise flawed. The other likely possibility to me is the demise of the companion wall wart AC-to-DC converter, shown in this shot that I snagged off Ebay:

The wall wart is non-standard, a 7.5V and 1A model, and I don't have a spare (especially one with the required plug dimensions and polarity) on hand. But I'll hold onto the DGS-1005D for a while in the hopes that I come across one, and that pressing it into service will resurrect the switch. The DGS-1005D has been a faithful LAN companion for a decade, and I'm not yet ready to say goodbye.

About the author
Brian Dipert is Editor-in-Chief of the Embedded Vision Alliance. He is also a Senior Analyst at BDTI and Editor-in-Chief of InsideDSP, the company's online newsletter. And he's an off-hours freelancer as the Principal at Sierra Media, where he contributes to (among other things) the Brian's Brain blog at EDN Magazine. Brian has a BSEE from Purdue University in West Lafayette, IN. His professional career began at Magnavox Electronics Systems in Fort Wayne, IN, where he worked for an aggregate 2.5 years as a co-op engineer. Brian subsequently spent eight years at Intel Corporation in Folsom, CA, holding a variety of roles in the company's nonvolatile memory group.

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