What UPS faults can you repair?

Common UPS faults we repair include: battery failure (most common), inverter output failure (no output on battery), overload protection faults, charger PCB failure (battery not charging), IGBT or rectifier failure, display/LCD faults, fan failure, transfer switch faults, burnt components and transformer issues. We also recondition aging UPS systems.

Do you offer on-site UPS repair?

Yes. For UPS systems above 3kVA, we typically provide on-site repair service to avoid transport damage. For smaller desktop UPS, carry-in to our service centre is more cost-effective. We cover all major cities across India for on-site repair calls.

My UPS shows overload but nothing is connected — what is wrong?

A false overload alarm with no load connected is usually caused by an output short circuit, a faulty inverter IGBT or a damaged output sensing circuit. Our engineers can diagnose this fault accurately through a series of isolation tests. This type of fault typically requires component-level PCB repair rather than simple replacement parts.

UPS Repair Service — All Brands & Models

Professional UPS repair for APC, Eaton, Emerson Vertiv, Numeric, Luminous, Microtek and all other brands across India. PCB repair, inverter faults, battery replacement. On-site and carry-in service. 25+ years experience.

Call +91 80080 06503

Expert Service

UPS Repair & Reconditioning — Any Brand, Any Capacity

Nishant Power Solutions operates a well-equipped UPS repair workshop in Mumbai with experienced engineers who specialize in diagnosing and repairing UPS faults across all brands and capacities. From a single desktop UPS in a small office to 200kVA three-phase industrial UPS in a data centre — our team has the expertise and equipment to get your UPS back to full operation.

We service UPS units regardless of where they were originally purchased. Our repair approach focuses on root-cause diagnosis rather than blanket replacement — ensuring you don't overspend on unnecessary parts. All repairs come with a 90-day warranty on parts and labour.

Common UPS Faults We Fix

Battery Failure & Replacement

The most common UPS issue in India. Batteries degrade in 2–4 years due to heat. We replace with genuine or compatible SMF batteries and provide 6-month battery warranty.

All SMF/VRLA battery sizes
Exide, Quanta, Leoch replacement batteries
6-month warranty on batteries
Old battery disposal included

PCB & Inverter Repair

Component-level PCB repair for inverter boards, control boards and charger boards. IGBT failure, diode faults, capacitor replacement, driver IC faults and microcontroller issues.

Component-level diagnosis
IGBT, MOSFET, diode replacement
Capacitor bank refurbishment
Control board firmware issues

Charger & Power Supply Faults

UPS battery not charging? Charger PCB failure is the second most common UPS fault. We repair or replace charger boards and investigate root causes to prevent recurrence.

Charger PCB repair and replacement
Input rectifier faults
Fuse and varistor replacement
Input filter capacitor repair

Display & Alarm Faults

LCD/LED display failures, false alarms, beeping UPS, SNMP card failures and communication port issues. We also reprogram alarm settings and update firmware where available.

LCD/LED display replacement
False overload alarm diagnosis
SNMP card repair and replacement
Alarm buzzer replacement

Brands We Repair

APC / Schneider Eaton Emerson / Vertiv Numeric Luminous Microtek Hitachi Hi-Rel Delta BPE Su-Kam Exide Consul Neowatt Socomec

Frequently Asked Questions

We repair UPS systems from all major brands including APC (Back-UPS, Smart-UPS, Galaxy), Eaton (9SX, 9PX, 9395), Emerson Vertiv (Liebert), Numeric (iTON, Poweron), Luminous (Zelio, iCruze, Rapid), Microtek (EB, Super Power, SEBz), Hitachi Hi-Rel, Delta, BPE, Su-Kam, Consul Neowatt and more. If your UPS brand is not listed, contact us — we likely repair it.

Yes. For UPS systems above 3kVA, we typically provide on-site repair service to avoid transport damage and downtime. For smaller desktop UPS below 3kVA, carry-in to our service centre is more cost-effective. We cover all major cities across India for on-site repair calls with engineers available within 24–48 hours depending on location.

Simple repairs like battery replacement are completed within the same day (for on-site calls) or within 24 hours (carry-in). PCB-level repairs typically take 3–7 business days depending on parts availability. For complex faults requiring imported OEM parts, it may take 10–15 business days. We provide a repair estimate with timeline before proceeding so you can make an informed decision.

Yes. All repairs carried out by Nishant Power Solutions come with a 90-day warranty on parts and labour. Battery replacements are warranted for 6 months. If a repaired fault recurs within the warranty period, we re-repair at no additional charge. This warranty is separate from any remaining OEM warranty on the UPS unit itself.

Continuous or repeated beeping from a UPS usually indicates one of three issues: (1) battery fault — the battery is discharged, failing or disconnected; (2) overload — connected load exceeds UPS rated capacity; (3) an internal fault — check the LCD display or front panel indicators for an error code. Battery failure is the most common cause (80% of cases). Contact us with your UPS model and beep pattern for a diagnosis.