Description
Fluke 434-II Power Quality Analyzer Repair
Power quality analyzers spend their lives connected to live three-phase systems, and the inputs take whatever those systems hand them. FlukeMeterRepair.com works on Fluke instruments and nothing else, which means the Fluke 434-II Power Quality Analyzer is not an unfamiliar model to us.
Symptoms we see on the Fluke 434-II Power Quality Analyzer
- Harmonics look implausible.
- Stored measurements are missing or will not export.
- It will not hold charge for a full session.
- One phase reads high, low, or not at all – input damage from a transient, which is the occupational hazard here.
- Phase readings look rotated or reversed.
- Events are not being captured.
What the repair involves
Voltage and current paths are tested separately on every phase, and the phase relationship between them is verified – both can be individually correct while the computed power is wrong. Clamps are tested with the instrument rather than assumed good. Everything is repaired at component level rather than by swapping assemblies, and the measured results come back with the instrument.
Before you ship it
Tell us what it was connected to when the fault appeared. Transient damage has a signature, and knowing the circuit shortens the diagnosis considerably.
Evaluation is free and you get a firm quote before any work starts. Every repair carries a 90-day parts-and-labor warranty. Email us or use the repair request form.




Sean Read –
Our Fluke 434- II power quality analyzer needed repair from the display because the meter seemed to function but no display. Sent in for evaluation and a great job was performed. Did not expect the level of repair and calibration documentation for our Fluke power logger.