Description
Megger MTDR300 Time Domain Reflectometer Repair
The Megger MTDR300 Time Domain Reflectometer is a cable fault locator – it finds where a cable has failed, usually by combining a surge generator that makes the fault arc with a receiver that pinpoints it. Two very different subsystems, and they fail independently.
The Megger MTDR300 Time Domain Reflectometer is repaired at June Company by technicians who work on this class of instrument daily, for utility cable crews, electrical contractors, and underground distribution teams. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.
Common Megger MTDR300 Time Domain Reflectometer problems we fix
- Internal power supply faults.
- Surge generator not producing full output – the high-energy side, which is what makes a fault audible and locatable at all.
- TDR pulse or trace faults.
- Receiver sensitivity degraded.
- Distance measurement inaccurate.
- High-voltage output stage failure.
- Capacitor bank or discharge faults.
- Display, keypad or front-panel faults.
FAQs
What if it is not economical to repair? We tell you in the quote. The evaluation is free and there is no obligation to proceed.
Is the high-voltage side serviceable? Yes. Output stages and capacitor banks are repairable at component level.
Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.
Related Megger repairs
We service 186 Megger instruments. See all Electrical TDR Tester Repair.






