Status: Discontinued — replaced by the 1770 Series. We still repair and calibrate all 430 Series models.
Fluke has moved on to the 1770 Series, but 434, 435, 437 and 438 analyzers are still widely deployed on three-phase surveys, the -II versions especially. Age shows up in predictable places on these units: the display and backlight, the battery pack, the rotary switch, the SD card slot and the input jacks that take a hit from transients. We repair all of them and recalibrate the analyzer before it ships.
Common Fluke 430 Series Problems We Fix
- Dead at the power button, or stuck during startup
- Faded screen, failed backlight or lost pixels
- Battery pack that only lasts a fraction of a logging session
- Voltage input reading nothing, or damaged by a transient
- Corroded or intermittent clamp and current probe connectors
- Worn rotary mode switch that skips or cuts out
- SD card slot not saving data
- USB download failing, or PowerLog not connecting
Something else wrong with your 430? Send us a note with the model and the symptom, and we will say what it likely needs.
Fluke 430 Series Models We Repair
| Model | Description | Service |
|---|---|---|
| Fluke 438-II | PQ analyzer with motor analysis — torque, speed, efficiency | Request Repair |
| Fluke 438 | PQ analyzer with motor analysis (original) | Request Repair |
| Fluke 437-II | PQ analyzer with 400 Hz support for aviation/military | Request Repair |
| Fluke 437 | PQ analyzer with 400 Hz support (original) | Request Repair |
| Fluke 435-II | Advanced PQ analyzer with energy loss calculator | Request Repair |
| Fluke 435 | Advanced PQ analyzer (original) | Request Repair |
| Fluke 434-II | Three-phase energy analyzer with PQ logging | Request Repair |
| Fluke 434 | Three-phase energy analyzer (original) | Request Repair |
| Fluke 43B | Single-phase power quality analyzer (legacy) | Request Repair |
What Calibration Covers on a 430 Series Analyzer
Power quality reports often go to a utility or an engineer who will act on them, so the analyzer has to agree with its specifications. Calibration on a 430 Series unit covers:
- Voltage and current on every phase and neutral input
- Frequency, harmonics and power readings, the measurements IEC 61000-4-30 Class A work depends on
- 400 Hz measurements on the 437 and 437-II
- Motor analysis results (torque, speed, efficiency) on the 438-II
The certificate is NIST-traceable and documented against Fluke’s published specifications.
Shipping a 430 Series Analyzer to Us
- Start with a message. Email us or file a service request with the model and what went wrong.
- Send the analyzer. We accept units from across the US and can supply a prepaid shipping label when requested.
- Decide on the quote. Diagnosis ends in a firm, no-obligation price, and the analyzer is not repaired until you give the go-ahead.
Email: info@junecompany.com | A 430 Series analyzer repaired here returns with NIST-traceable calibration and carries a 90-day parts-and-labor warranty.
Frequently Asked Questions
Do you still repair the discontinued Fluke 430 Series?
Yes. The 430 Series has been replaced by the 1770 Series, but we repair and recalibrate all 430 models, including the 434, 435, 437, 438 and their -II versions, plus the legacy 43B, which remain heavily deployed.
How much does Fluke 430 Series repair cost?
The evaluation is a flat fee, and that fee is credited when you go ahead with the repair. You will know the firm cost for your analyzer before we start on it.
How long does the repair take?
Expect most 434, 435, 437 and 438 units to leave our bench 1 to 5 business days after they arrive. When a survey cannot wait, expedited service is available.
Will my 435-II still meet Class A after you repair it?
That is the goal of the post-repair calibration: we check the functions IEC 61000-4-30 Class A relies on and document the results on a NIST-traceable certificate against Fluke’s specifications.
Do you repair the 437-II 400 Hz and 438-II motor-analysis functions?
Yes. We service the 400 Hz aviation/military capability on the 437-II and the motor-analysis functions (torque, speed, efficiency) on the 438-II, restoring and verifying those measurements specifically.
My analyzer won’t store data or download. Can you fix it?
Yes. SD card slot failures and USB download faults are common 430 Series repairs, traced and restored so you can save and offload your measurements again.
Should I repair my 435-II or move to a 1770?
If the analyzer still does what your surveys need, our firm repair quote gives you a real number to set against the price of a 1773 or 1775 before you decide.
What if my 430 Series configuration isn’t in the table?
Every 430 Series variant is supported, so choose the closest model when you request service, or email us and we will match it for you.
Who uses the Fluke 430 Series?
Facility electricians, power quality consultants, utilities, aviation maintenance teams (437-II), and motor-driven equipment operators (438-II) rely on the 430 Series for three-phase power quality and energy analysis.
See also our Fluke 1770 Series repair, Fluke 1740 Series repair, and Fluke 1730 Series repair pages, or see every power quality analyzer we repair in one list.
More Fluke power quality instruments
Customers who keep a 435-II in service often add a logger for long surveys; repair for those is here:
