LG AC Not Turning On Repair in Chennai
The AC is completely dead — no response from the remote or the indoor unit.
When an LG Dual Inverter or split AC goes completely unresponsive, it usually points to a breakdown in the power delivery system or a triggered protection circuit. In Chennai’s humid climate, high voltage spikes from grid power fluctuations frequently damage LG’s Main PCB power supply section or blow the primary ceramic fuse, preventing power from reaching the indoor display panel.
Common Symptoms- No display lights, beep sounds, or response from the LG remote or manual power button.
- The outdoor inverter unit remains completely silent while the indoor unit shows no signs of life.
- The circuit breaker (MCB) trips immediately whenever you attempt to switch on the AC isolator.
- A faint burning smell near the indoor unit's right side where the main control board is housed.
- Blown Primary Fuse or Varistor (MOV): Voltage surges in Chennai power lines blow the protective metal oxide varistor or fuse on the LG indoor PCB.
- Faulty Switch-Mode Power Supply (SMPS) Chip: Damage to the IC chip powering the low-voltage DC section of the LG mainboard.
- Faulty Terminal Block Wiring: Corrosion or burnt wiring terminals connecting the external isolator switch to the LG unit.
- Defective Display/Receiver Module: Moisture ingress damaging the small IR receiver board, preventing remote signal processing.
- Tripped Outdoor IPM Module: Short circuits in the inverter compressor drive board cutting off power back to the indoor transformer.
- Voltage & Input Diagnosis: Our technicians test supply voltage at the wall isolator and terminal block using digital multimeters to confirm power arrival.
- PCB Diagnostic & Component Inspection: We extract the LG indoor control board to check for burnt MOV protection components, blown fuses, or damaged SMPS circuits.
- Wiring & Terminal Service: We replace burnt internal connecting wires and clean oxidized terminal block connectors with electrical contact cleaner.
- On-Site or Bench Board Repair: Faulty fuses or power ICs are replaced with genuine LG-compatible spares, or the PCB is repaired under expert supervision.
- System Safety Check: We run the LG Dual Inverter unit through a full operational test, verifying current draw and temperature modulation before handover.
Don't let a dead air conditioner disrupt your comfort. Janani Cool Care offers fast, trustworthy LG AC power fault diagnosis and PCB repairs across Chennai, backed by a 30-day service warranty. Call +91 99410 82878 now to schedule an expert doorstep technician today.
How Janani Cool Care fixes it
Book online or call
Pick your service, choose a date and time slot, and share your address. We confirm the slot within 15 minutes.
Technician arrives
A verified technician reaches your doorstep at the scheduled time — you are notified when they are on the way.
Diagnosis & transparent quote
The technician inspects the appliance, explains the issue, and shares upfront pricing before any work begins.
Service performed
Work is carried out on the spot wherever possible, using proper tools and genuine spares.
Performance check
The appliance is tested after service to confirm everything works as expected before the technician leaves.
Invoice & 30-day warranty
You get a digital invoice, and your 30-day service warranty starts from the service date.
AC Not Turning On on other brands
Other LG AC problems we fix
Frequently asked questions
Why is my LG AC totally unresponsive to both the remote and manual power switch?
This usually indicates a blown primary fuse, a damaged varistor from a voltage surge, or a dead SMPS power module on the main indoor PCB board that stops electricity from reaching the unit's display.
How much does it cost to fix an LG AC that is not turning on in Chennai?
The cost depends on whether the issue is a minor fuse/wiring repair or requires component-level PCB repair; our technician will inspect the unit on-site and provide an exact estimate before starting work.
How long does it take to repair a dead LG AC power issue?
Most basic power and wiring issues or fuse replacements are fixed within 1 to 2 hours on-site, though severe main PCB board repairs may take up to 24 hours if bench testing is required.
Do you provide a warranty on LG AC power fault repairs?
Yes, Janani Cool Care offers a 30-day service warranty on all labor and replaced electrical components for your complete peace of mind.