Fluke 8558A Reference Multimeter Repair

Description

Fluke 8558A Reference Multimeter Repair

The Fluke 8558A is a reference (8.5-digit) bench multimeter — a high-accuracy lab DMM for DC/AC voltage, current, and resistance, used to calibrate workload meters and instruments. Its precision lives in the ultra-precision input/measurement circuitry and the internal reference, which is where service and calibration focus.

FlukeMeterRepair.com repairs and calibrates the Fluke 8558A for calibration labs, electronics-manufacturing lines, and R&D engineers.

Common Fluke 8558A problems we fix

• Measurement accuracy out of spec — a range drifting beyond its tight reference-meter spec, recalibrated against standards.
• Reference drift — the internal reference out of spec, recalibrated.
• A function or range dead — input or range-circuit faults, often after an overload, repaired.
• Won’t communicate — the remote (GPIB/LAN/USB) interface, repaired.
• Power-supply or display faults.

FAQs

My 8558A is out of spec — fixable? Yes. Input and reference faults are repairable, then the meter is recalibrated against our standards so every range is accurate to reference-grade spec, with a NIST-traceable certificate.

Do you calibrate all functions? Yes — every range is checked against our standards.

Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.