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Electrical Test Equipment Repair
DMMs, power supplies, electronic loads, source-meters · 90-day warranty · ISO/IEC 17025 accredited post-repair calibration · ANAB AC-1736
Electrical Test Equipment Repair
Techmaster Electronics provides factory-trained, component-level repair of electrical test instruments — digital multimeters, programmable power supplies, electronic loads, source-measure units, and precision resistance standards. Every repair includes an ISO/IEC 17025 accredited post-repair calibration certificate and a 90-day parts-and-labor warranty.
Equipment We Repair
Our electrical repair capabilities cover the most widely used precision instruments in modern test, manufacturing, and energy labs. Every repaired unit is verified against NIST-traceable standards.
Digital Multimeters
Bench and handheld DMMs (Fluke, Keysight, Keithley) — input-protection rework, range-switching repair, 6.5/7.5/8.5-digit reference DMM service with post-repair traceable calibration.
Power Supplies
Programmable DC and AC power supplies, electronic loads, and modular mainframes — capacitor replacement, regulator-board rework, output-stage refurbishment, GPIB / LAN interface repair.
Electronic Loads
Programmable electronic loads (DC, AC, regenerative) — MOSFET-bank repair, thermal-management refurbishment, control-board rework, post-repair load verification.
Source-Meter Units
Keithley / Keysight SMUs, electrometers, picoammeters, and precision sources — low-current measurement chain rework, guard / triax restoration, and full post-repair Z540 or ISO 17025 calibration.
Also repaired: Oscilloscopes · Frequency Counters · LCR Meters · Decade Resistance Boxes · Electrical Safety Analyzers · AC / DC Calibrators · Reference Standards · Ground-Bond Testers · Hipot Testers · Insulation Resistance Meters
Industries We Serve
Mission-critical electrical test equipment repair across the sectors where instrument downtime is unacceptable.
Aerospace & Defense
Avionics test sets, MIL-STD test gear, and ATE racks — repair documentation that withstands audit scrutiny.
Data Centers & Hyperscale
Power-supply ATE, server-rack burn-in racks, and load-bank repair for hyperscale build-out and ongoing operations.
Power Generation & Utilities
Substation calibrators, protection-relay testers, and energy-meter ATE returned to spec without OEM-trip downtime.
Automotive & EV
EV battery cyclers, traction-inverter load banks, and on-board charger ATE — repaired for high-voltage / high-current safety.
Semiconductor & Electronics Mfg
Wafer-probe SMUs, parametric test sets, and reliability burn-in PSUs for fabless and IDM customers.
Medical Devices
Electrical safety analyzers, leakage testers, and bench DMMs in hospital biomed and medical OEM QA labs.
Renewable Energy & Battery
PV inverter test, battery cyclers, and grid-tie compliance instruments — repair for utility-scale and behind-the-meter labs.
EMC / EMI Test Labs
Reference DMMs, calibrator stacks, and verification standards used by EMC labs for FCC, CISPR, IEC 61000 certification.
Three Levels of Electrical Repair
Every Techmaster repair includes a post-repair calibration sticker on the instrument. Choose the depth of repair and the documentation level that matches your audit and operational needs.
1
Board-Level Repair
Fast turn restore
- Module / board swap diagnosis
- Failed module replacement
- Functional verification
- Traceable post-repair calibration
2
Component-Level Repair
Plus parts & rework
- Schematic-level diagnosis
- SMD / through-hole component-level rework
- As-found / as-left data report
- Z540-compliant post-repair calibration
Most Rigorous
3
OEM-Spec Restoration
Audit-ready accreditation
- Full restore to OEM specifications
- Replacement of out-of-tolerance components
- ISO/IEC 17025 accredited calibration certificate
- Measurement uncertainties report
- ANAB Cert AC-1736 reference
Click here to learn more about post-repair calibration levels →
Our Repair Advantages
Why aerospace, defense, manufacturing, and healthcare customers trust Techmaster for electrical test equipment repair since 1989.
90-Day Repair Warranty
Every repair is covered by a 90-day parts-and-labor warranty — if the same failure reoccurs, we repair it again at no charge.
ISO/IEC 17025 Cal Included
Every repaired instrument ships back with a post-repair calibration certificate against ANAB Cert AC-1736 — no separate calibration order needed.
Faster Than OEM
Standard 7–10 business-day repair turnaround vs. 4–8 weeks at the OEM service center. Expedite service available. Free local pickup in Silicon Valley, So-Cal, and Orlando.
Got a no-output power supply or out-of-tolerance DMM? Talk with our repair experts.
Our technicians handle legacy Fluke, HP / Agilent / Keysight, Keithley, Sorensen, and TDI instruments — including units the OEM has declared end-of-service. Send us your model number and failure symptoms for a same-day repairability check.
Frequently Asked Questions
Common questions about electrical test equipment repair at Techmaster Electronics.
What is the typical turnaround for electrical test equipment repair?
Standard repair turnaround is 7–10 business days from receipt, including post-repair ISO/IEC 17025 calibration verification. Many board-level DMM and power-supply repairs ship in 5 business days. Expedited service is available — contact sales@techmaster.us to schedule.
Do you repair high-voltage / high-current power supplies and electronic loads?
Yes. Our technicians are trained on programmable AC/DC supplies, electronic loads (single-quadrant and regenerative), and high-current source units. We routinely repair Keysight N-series, Chroma, Magna-Power, TDI, and Sorensen models with full post-repair load verification.
Will the repaired DMM still meet its published accuracy specifications?
Yes. Every repaired instrument is verified against NIST-traceable standards before it ships back. Repairs include ISO/IEC 17025 accredited calibration against ANAB Cert AC-1736 by default, with full measurement uncertainties. Z540 and traceable certificate options are available on request.
Do you repair legacy Fluke, HP / Agilent / Keysight, and Keithley instruments?
Yes — legacy support is one of Techmaster’s specialties. We repair HP / Agilent / Keysight, Fluke, Keithley, Tektronix, Wavetek, and Rohde & Schwarz instruments going back to the 1980s, with reverse-engineered parts where OEM stock is unavailable.
What if the instrument fails the post-repair calibration?
If a repaired instrument cannot be brought back into specification, we provide a written diagnosis and credit the repair labor toward a refurbished or replacement unit from our Sales & Rentals inventory. You only pay the evaluation fee on unrepairable units.
Which Techmaster locations perform electrical test equipment repair?
Electrical repair is performed at our Vista CA (corporate HQ), Santa Clara CA, Orlando FL, and San Antonio TX laboratories. Free local pickup is available in Silicon Valley, Southern California, and Orlando.
Ready to schedule your electrical instrument repair?
Send your model number, serial, and failure symptoms — we’ll respond within one business day with diagnosis pricing, repair turnaround, and a shipping label or pickup window.
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