Description
Chroma 63105A DC Load Repair and Calibration
The Chroma 63105A is a programmable DC electronic load module — a plug-in load module that installs into a Chroma load mainframe and sinks programmable current and power to test power supplies and batteries in CC, CV, CR, and CP modes. Its character is current sinking, so faults concentrate in the load (sink) stage, mode control, and measurement — not the hipot faults its category label implies.
June Company repairs and calibrates the Chroma 63105A for power-supply and battery test teams.
Common Chroma 63105A problems we fix
- Won’t sink rated current/power — load-stage (power MOSFET) failure, the defining DC-load fault, repaired so it sinks full rated load.
- A mode (CC/CV/CR/CP) not working — mode-control faults, repaired.
- Module not recognized by the mainframe — the module’s interface to the chassis, restored.
- Readback inaccurate — measurement drift, recalibrated.
- Dynamic-response or protection faults.
FAQs
My 63105A module won’t pull current or isn’t recognized — fixable? Yes. Load-stage and module-interface faults are repairable, then verified in a mainframe so it sinks full rated load in every mode, with a NIST-traceable certificate.
Do you test it in a mainframe? Yes — the module is verified as part of a working system.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.




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