Description
Fluke 123B/S ScopeMeter Repair
The Fluke 123B/S is a rugged handheld industrial ScopeMeter (120B series) — a 20 MHz two-channel portable scope-plus-meter (the /S kit configuration) with isolated inputs and Connect-and-View triggering for fast industrial troubleshooting. As a field-carried instrument, its faults concentrate in the isolated input front-ends, the display, and the battery/power section.
FlukeMeterRepair.com repairs and calibrates the Fluke 123B/S for industrial electricians, automation technicians, and field-service engineers.
Common Fluke 123B/S problems we fix
- Isolated-input breakdown — damage to the floating input isolation, repaired and recalibrated.
- Input-channel damage from overvoltage — a dead, noisy, or inaccurate channel after an over-range event, repaired.
- Trigger / Connect-and-View faults — auto-triggering not working, corrected.
- Display failure — blank, dim, or cracked display, repaired.
- Won’t power on or hold a charge — battery and power faults, serviced.
FAQs
A channel on my 123B/S is off — fixable? Yes. Isolated-input and trigger faults are repairable, then the channels are recalibrated so measurements are accurate, with a NIST-traceable certificate.
Are the inputs recalibrated? Yes — both channels are checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.




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