Juniper EX3400 repair and refurbishment.
Power circuitry repair and Virtual Chassis diagnostics for Juniper EX3400 enterprise switches. No fix no fee.
EX3400 repair and refurbishment
The Juniper EX3400 is a managed Layer 2/Layer 3 stackable enterprise switch supporting Virtual Chassis stacking. Available in 24-port and 48-port configurations with PoE+ and SFP+ uplinks, the EX3400 serves campus distribution and access layers. We carry out component-level repair on EX3400 units.
Common EX3400 faults we fix
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Power circuitry faults causing complete failure to power on or intermittent operation
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Virtual Chassis stacking port faults causing stack member isolation
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PoE budget degradation from PoE controller issues
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Boot faults caused by flash memory failure or power corruption on the boot circuit
How it works
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1
Send details
Share the switch model, fault symptoms, and any error LEDs or log output.
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2
Diagnostics
Bench diagnostics isolate the fault to board, component, or subsystem.
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3
Repair, Refurbish & Test
Component-level repair with port validation and management system testing before return.
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4
Return to service
Confirmed test results and return logistics for your switch.
Why Electron Lab
- Engineer-led bench diagnostics
- Component-level repair and rework
- Tested Before Return
- Clear, fast quoting
EX3400 repair FAQs
Can you repair a Virtual Chassis fault on a Juniper EX3400?
We diagnose Virtual Chassis faults at the hardware level. Where the fault is a physical stacking port or interconnect issue, repair is viable.
My EX3400 will not power on — can you repair it?
Yes. Power circuitry faults are the most common failure. We carry out component-level repair on the power circuitry.