🔬 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:
Domestic Frost-Free & Side-by-Side Refrigerator Inverter Board Repair
Modern frost-free refrigerators run continuously with electronic variable-capacity compressors. When power surges damage the primary SMPS or IPM drive, cooling stops immediately. We repair switching power supplies and compressor pulse drives to restore deep freeze performance.
🏢 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:
My refrigerator LED flashes 3 or 5 times on the back PCB. What does it mean?
Flashing diagnostic LEDs indicate compressor start failure, IPM over-current, or DC voltage underflow. Our lab repairs these circuits daily.
Do you repair side-by-side multi-door inverter refrigerator motherboards?
Yes, we service motherboards and dispenser control panels for all side-by-side and French door refrigerators.
Are SMPS power supply ICs kept in stock?
We maintain ready stock of TNY266/278, LNK304/306, and VIPer series PWM controllers for instant turnaround.
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 Refrigerator Linear Inverter Compressor Motherboard Repair
Click on your city to inspect local courier pickup schedules and turnaround time: