Trying To Fix A Suspiciously Cheap Enterprise-Grade Network Switch

A YouTuber bought a used Juniper EX4100-F-12P enterprise PoE switch, originally priced around $3,000, for a fraction of the cost as an untested unit. After disassembly, the switch revealed shorted 48VDC voltage rails, water ingress, rust, corrosion, and exploded components with torn PCB traces. With no schematics available from Juniper and no viable repair path, the unit was deemed a total loss, serving as a cautionary tale about buying cheap 'untested' enterprise networking gear.

Source: https://hackaday.com/2026/09/11/trying-to-fix-a-suspiciously-cheap-enterprise-grade-network-switch. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.