🔬 Our Component-Level Repair & Testing Workflow
How every faulty PCB is diagnosed, restored, and calibrated inside our laboratory:
Checking switching DC voltages (3.3V, 5V, 12V, 15V) to protect main MCU processor.
Desoldering burnt power transistors; installing OEM modules with high-temp heat paste.
Oscilloscope testing of serial communication wave, replacing degraded optocouplers.
Run under real compressor & fan motor load on our test rig before return courier.
⚡ Common Faults & Symptoms Restored by Our Engineers:
We repair the following component failures with a 90-day warranty:
High-Power Intelligent Power Module (IPM) & BLDC Fan Motor Driver Rebuild
The Intelligent Power Module is the electronic heart of every inverter air conditioner, synthesizing 3-phase variable frequency alternating current to drive the DC compressor. When lightning strikes or refrigerant leaks cause high compressor load, the IPM breaks down. Our lab stocks original OEM semiconductor modules for zero-defect restoration.
🏢 Supported Inverter AC & Appliance Brands:
We stock original OEM power modules, IGBTs, bridge rectifiers, and microcontrollers for all brands:
❓ Frequently Asked Questions
Common questions regarding diagnostic bench testing, pricing, and courier handling:
How do you test if an IPM module is faulty?
We measure forward diode drops across U-V-W to P/N DC bus rails and inspect gate drive optocoupler pulses under dynamic oscilloscope capture.
Do you replace thermal compound when reinstalling heatsinks?
Yes, we apply high thermal conductivity aerospace-grade silicone grease with precision torque calibration.
Can DC fan motor drive circuits be repaired without replacing the full board?
Yes, we replace individual BLDC driver ICs and hall sensor feedback optocouplers.
Do you provide a warranty on repaired inverter boards?
Yes! Every repaired board includes our 90-day replacement and repair warranty for complete peace of mind.
📍 All-India City Pages for AC Compressor Inverter Drive (IPM) & DC Fan Motor Board Repair
Click on your city to inspect local courier pickup schedules and turnaround time: