Status: From current systems such as the EZ-Thump v3 and Surgeflex 32 to the older Megger fault locators still working in the field, we repair and calibrate the whole range.
Every thump sends the energy stored in a capacitor bank down a buried cable, and the set that does it spends the rest of its life bouncing between job sites in a truck. That is why the surge stage, the HV switching and the TDR front end are where these systems usually fail. We repair those sections on Megger surge generators, power fault locators and their accessories, then recalibrate the set before it goes back to your crew.
Common Megger Cable Fault Locator Problems We Fix
- Weak or no surge output, usually a surge capacitor bank worn down by repeated high-energy discharges
- Won’t fire or no thump, often a failed high-voltage switching thyristor
- Noisy or insensitive TDR traces from a degraded receiver
- Flashovers or leakage where the HV cable, connectors or internal insulation have broken down
- Locks up at startup or won’t boot because of corrupted control firmware
- Display or touchscreen dead after years of truck vibration
- Portable unit won’t run on its battery or internal supply
- Arc reflection mode not working because of a fault in the filter circuit
Seeing a symptom that isn’t on this list? Email us what the set does when you try to fire it, and we will tell you where we would start.
Megger Cable Fault Locator Models We Repair
What Calibration Covers on a Megger Fault Locator
A thumper that reports the wrong voltage or a TDR that marks the wrong distance sends a crew digging in the wrong place. After any repair, we recalibrate the functions that decide where you dig:
- Output voltage and the kV meter, so the surge and proof-test voltage you select is what reaches the cable
- Surge output, checked so the set delivers its rated energy on each voltage range
- TDR distance, so the pre-location mark and the arc-reflection trace line up with the real fault
- Current and leakage metering on sets that display it during burn or proof testing
Results are traceable to NIST and documented on a certificate that ships with the unit.
Sending Us a Megger Fault Locator
- Describe the fault. Email us or fill in a service request with the model and what happens when you power it up or fire it.
- Ship the set. It can come from anywhere in the US, and we will send a prepaid shipping label if you ask for one.
- Approve the price. After evaluation you get a firm, no-obligation quote, and nothing gets repaired until you say yes.
Email: info@junecompany.com | Each fault locator we repair leaves with NIST-traceable calibration and a 90-day warranty on parts and labor.
Frequently Asked Questions
What does Megger thumper repair cost?
That depends on which stage failed. There is a flat evaluation fee up front, it counts toward the repair, and you see the full firm price before any work starts on the set.
How long will my fault locator be out of service?
Most of these sets ship back 1 to 5 business days after they reach us, and expedited service is an option when a crew is waiting. Rebuilding a surge stage or capacitor bank can take longer, and if it will, the quote says so.
My thumper’s surge output is weak or gone. Can you fix it?
Yes. Surge capacitor bank degradation and HV switching thyristor failure are the most common faults on these systems, and both can be fixed. Afterward we test the surge stage against our standards to confirm the set is back to its rated energy.
My TDR traces are noisy or I can’t see the fault. Is that repairable?
Yes. TDR receiver sensitivity degradation is repairable and recalibrated, restored so pre-location and arc-reflection traces read cleanly.
My unit flashes over or trips on HV. Can you fix that?
Yes. HV cable, connector, and internal insulation breakdown is a routine repair, restored for safe operation at full rated voltage.
The set works, but its kV reading or TDR distance looks off. Can you only recalibrate it?
Yes. Calibration without a repair is available on these systems, and it covers the voltage, surge and TDR functions listed above, with a NIST-traceable certificate when it is done.
Do you repair the portable EZ-Thump units and the older Surgeflex/SFX systems?
Yes. From the compact EZ-Thump portables to the higher-energy Surgeflex, SFX, and PFL systems, current and legacy alike, they’re all fully supported for repair and recalibration.
My model isn’t in the table. Can you still work on it?
Very likely. Beyond the models above we see Megger impulse generators, burn systems, HV bridges and the power supplies that feed them; choose the nearest match or send us an email with the model number. Because most cable faults begin as insulation that finally gave way, we also offer Megger insulation tester repair.
Who uses Megger cable fault locators?
Electric utilities, cable-testing contractors, underground distribution maintenance crews, telecom cable teams, and industrial plant cable-maintenance groups rely on the EZ-Thump, Surgeflex, SFX, PFL, and Smart Thump systems to pre-locate and pinpoint faults in underground power cable, and on independent Megger cable fault locator repair to keep them in service. For full manufacturer details, see Megger’s cable fault locating systems page.
Megger cable and insulation test gear
Fault crews who thump cable usually test it with other Megger gear before and after, and we repair that equipment too:
