Debugging a “buggy” networked CableCARD receiver

This engineer has dealt with plenty of buggy hardware before, but this is getting ridiculous… The post Debugging a “buggy” networked CableCARD receiver appeared first on EDN.

  Electronics   Sep 23, 2025   0   15  Add to Reading List
Debugging a “buggy” networked CableCARD receiver

Welcome to the last in a planned series of teardowns resulting from the mid-2024 edition of “the close-proximity lightning strike that zapped Brian’s electronics devices”, following in the footsteps of a hot tub circuit board, a three-drive NAS, two eight-port GbE switches and one five-port one, and a MoCA networking adapter…not to mention all the gear that had expired in the preceding 2014 and 2015 lightning-exposure iterations…

This is—I’m sad to say, in no small part because they’re not sold any longer (even in factory-refurbished condition) and my accumulated “spares” inventory will eventually be depleted—the third straight time that a SiliconDust HDHomeRun Prime has bit the dust:

Legacy vulnerability

The functional failure symptoms—a subsequent access inability from elsewhere over the LAN, coupled with an offline-status front panel LED—were identical in both the first and second cases, although the first time around, I couldn’t find any associated physical damage evidence. The second time around, on the other hand…

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