Description
Megger MJ159 Insulation Tester Repair Services
June Company’s certified technicians repair and calibrate the Megger MJ159 for motor repair shops, cable testing contractors, transformer maintenance crews, and industrial electricians. As insulation tester specialists, we understand this equipment inside and out — and we know exactly how to restore performance when problems arise.
About the Megger MJ159
In the field, insulation testers (megohmmeters) apply DC voltage and measure insulation resistance to assess the health of motor windings, cable insulation, transformer windings, and switchgear. Professionals depend on the Megger MJ159 for precise, repeatable results. Any degradation in performance impacts measurement confidence and downstream decisions.
Common Insulation Tester Issues We Repair
June Company’s repair services for this instrument include:
- Battery pack failure: repaired by technicians experienced with Megger instrumentation
- Display issues: resolved through targeted diagnostics and precision repair techniques
- Hv generator degradation: diagnosed through systematic testing and resolved with component-level repair
- Measurement amplifier drift: identified during our multi-point inspection and corrected to restore specification performance
- Guard terminal faults: addressed with OEM-grade components and verified against traceable standards
Calibration and Performance Verification
After repair, we perform comprehensive calibration across all operational modes. For the Megger MJ159, this includes verification of megohm and insulation resistance performance, with results documented on a NIST-traceable calibration certificate.
Why Choose June Company for Megger Repair?
What sets June Company apart:
- Traceable Calibration: NIST-traceable calibration certificates included with every repair
- 90-Day Warranty: All repairs backed by our parts and labor warranty
- Component-Level Repair: We diagnose and repair at the board and component level, not just swap modules
- OEM-Grade Parts: Genuine or equivalent components for lasting reliability
- Fast Turnaround: Most repairs completed in 5–10 business days
- Category Specialists: Dedicated experience with insulation tester equipment from Megger and related manufacturers
Our Service Workflow
- Free Evaluation: Ship your Megger MJ159 to our facility. We provide a detailed assessment and firm quote at no cost.
- Expert Repair: Certified technicians perform HV generator restoration, measurement amplifier recalibration, guard circuit repair, and multi-voltage range verification.
- Calibration: Full NIST-traceable calibration with documented results across all critical parameters.
- Quality Verification: Final functional testing confirms your instrument meets or exceeds original specifications.
- Return Shipment: Securely packaged and shipped with calibration certificate and repair documentation.
Industries We Serve
The Megger MJ159 is used by motor repair shops, cable testing contractors, transformer maintenance crews, and industrial electricians. June Company understands the operational demands of these fields and the importance of keeping critical test equipment in service.
Request a Repair Quote
Contact June Company for professional Megger MJ159 repair and calibration. Our team is ready to evaluate your instrument and provide a no-obligation quote.
Email: info@juneusa.com






