Professional Security System Repair in NYC

Security systems are complex networks of electrical components, sensors, cameras, and control panels that require expert knowledge to repair properly. At Lock and Tech USA, we specialize in diagnosing and repairing all types of security equipment for residential and commercial properties throughout NYC. From outdated apartment intercom systems to sophisticated commercial access control networks, our technicians have the experience and tools to get your system working again quickly and reliably.

We understand that a broken security system leaves your property vulnerable. That’s why we prioritize fast response times, carry extensive parts inventory, and offer 24/7 emergency repair services. Whether you need a simple sensor replacement or complex system troubleshooting, Lock and Tech USA delivers professional repairs that restore your peace of mind.

Lock and Tech USA provides comprehensive repair services for all types of security equipment. We work on systems from any manufacturer and handle both residential and commercial repairs throughout NYC.

Emergency Repairs. When your security system fails, we respond fast. Our emergency repair service provides same-day response for critical issues like complete system failures, alarm panels not arming, or cameras that stopped recording. We understand that security problems can’t wait.
Diagnostic Services. Not sure what’s wrong with your system? Our technicians use advanced diagnostic tools and extensive troubleshooting experience to quickly identify the root cause of any problem, from intermittent faults to complete system failures.
Component Replacement. Sensors, control panels, keypads, cameras, power supplies, and backup batteries all wear out over time. We carry a large inventory of replacement parts and can source hard-to-find components for older systems.
System Upgrades. Sometimes repair isn’t enough. We can upgrade outdated equipment while preserving your existing infrastructure, saving you the cost of complete system replacement while bringing your security up to modern standards.
Preventive Maintenance. Avoid costly breakdowns with regular maintenance visits. We inspect all components, test system functionality, clean cameras, check connections, and replace worn parts before they fail.
Integration Repairs. Problems with systems that connect multiple technologies (alarms, cameras, access control, intercoms) require specialized knowledge. We repair and restore proper communication between integrated security systems.
Wiring and Connection Issues. Damaged cables, loose connections, and corroded wiring cause many security system problems. Our technicians trace and repair wiring issues throughout your property.

Remote Access Restoration. Lost the ability to view cameras or control your alarm remotely? We restore remote viewing capabilities, reconfigure network settings, and get your mobile apps working again.

We Repair All Brands and Systems – Unlike many security companies that only service what they install, Lock and Tech USA repairs systems from any manufacturer. Honeywell, DSC, Ademco, Hikvision, Dahua, Comelit, ButterflyMX, 2N, Aiphone and dozens of other brands—we work on them all.

24/7 Emergency Service – Security emergencies don’t follow business hours. Our on-call technicians are available around the clock for urgent repairs. When you call, you reach a real person who can dispatch a technician immediately.

Same-Day Service Available – Most repair calls can be scheduled for the same day or next day. We understand that every hour your security system is down puts your property at risk.

Extensive Parts Inventory – We stock a wide range of components, sensors, cameras, power supplies, and backup batteries. This means faster repairs without waiting days for parts to arrive.

Expert Diagnostics – Our technicians have decades of combined experience troubleshooting security systems. We can diagnose problems other companies can’t figure out, especially with older or unusual systems.

Transparent Pricing – We provide clear estimates before starting work. No hidden fees or surprise charges. You’ll know exactly what the repair costs before we begin.

Work on Older Systems – Many companies refuse to repair outdated equipment. We specialize in keeping older systems running, often finding creative solutions that extend the life of your existing investment.

Commercial and Residential – Whether you need repairs for a single-family home or a 200-unit apartment building, we have the experience and resources to handle projects of any size.

Don’t let a broken security system leave your property unprotected. Lock and Tech USA provides fast, professional repair services throughout NYC. Our experienced technicians can diagnose and fix problems with any security equipment, regardless of age or manufacturer. Contact us now for same-day emergency repairs or to schedule a diagnostic visit. We’ll get your security system working properly again so you can have peace of mind knowing your property is protected.

Lock and Tech USA repairs all types of security equipment for residential and commercial properties throughout New York City. Our technicians are trained on the latest technologies and have extensive experience with older systems.

Residential Properties

• Single-family homes
• Townhouses and brownstones
• Condominiums
• Cooperative apartments
• Multi-unit rental properties

Commercial Properties

• Retail stores and shopping centers
• Office buildings
• Restaurants and hospitality
• Warehouses and industrial facilities
• Medical and healthcare facilities
• Schools and educational institutions
• Religious institutions
• Government buildings
• Construction sites

Whatever type of property you own or manage, Lock and Tech USA has the expertise to repair your security systems quickly and effectively. Our technicians work throughout all five boroughs and are familiar with the unique challenges of NYC buildings, from pre-war walkups to modern high-rises.

Alarm systems protect your property from intrusion, fire, and other emergencies. When they malfunction, your safety is compromised. Lock and Tech USA repairs all types of alarm systems with fast, reliable service.

False Alarms. Frequent false alarms are frustrating and may result in fines from local authorities. We identify and fix the sensors, wiring, or programming issues causing false triggers.

System Won’t Arm. If your alarm panel refuses to arm or displays error messages, we diagnose the problem quickly. Common causes include faulty sensors, low battery backup, communication failures, or programming errors.

Beeping or Chirping Sounds. Constant beeping usually indicates low batteries, trouble conditions, or communication problems. We identify the specific issue and resolve it permanently.

Keypad Not Responding. Unresponsive keypads may have connection issues, internal failures, or programming problems. We repair or replace keypads and restore full functionality.

Sensors Not Working. Door/window contacts, motion detectors, and glass break sensors can fail due to age, damage, or wiring problems. We test all sensors and replace defective units.

Communication Failures. If your alarm can’t reach the monitoring station, you’re not protected. We repair phone line connections, cellular communicators, and internet-based alarm communication.

Control Panel Issues. Main control panels can develop power supply problems, battery failures, or internal component issues. We repair or replace panels while preserving your existing zones and programming.

Video surveillance systems are critical for monitoring your property and recording evidence. When cameras stop working, you lose valuable protection. Lock and Tech USA repairs all types of camera systems, from simple 4-camera setups to complex enterprise networks.

Cameras Not Recording. If your NVR or DVR stopped recording, we diagnose whether the problem is the recorder, hard drives, cameras, or network connection. We restore recording functionality quickly.

No Video Feed. Black screens, “no signal” messages, or blank monitors indicate camera, cable, or power problems. We trace the issue and get your video feed working again.

Poor Image Quality. Blurry, pixelated, or distorted video can result from camera misalignment, dirty lenses, incorrect settings, or failing components. We clean, adjust, and repair cameras for optimal image quality.

Night Vision Not Working. Infrared LEDs that provide night vision can burn out over time. We replace failed IR arrays and restore 24/7 surveillance capability.

Remote Viewing Problems. Can’t access cameras from your phone or computer? We repair network settings, configure port forwarding, update firmware, and restore remote viewing functionality.

Hard Drive Failures. Storage drives have limited lifespans. We replace failed drives, recover footage when possible, and upgrade to larger capacity drives.

Power Supply Issues. Cameras need consistent power. We repair faulty power supplies, PoE switches, and individual camera power problems.

PTZ Cameras Not Moving. Pan-Tilt-Zoom cameras that won’t respond to controls need specialized repair. We fix motor problems, control board issues, and communication errors.

Cable Damage. Rodents, weather, and construction can damage camera cables. We repair or replace damaged wiring throughout your property.

Hikvision, Dahua, Uniview, Lorex, Swann, Night Owl, Samsung, Honeywell, Avigilon, Axis, Bosch, and many more. We work on IP camera systems, analog CCTV, HD-over-coax systems, and wireless camera networks.

Intercom systems are essential for apartment buildings, offices, and commercial properties. When intercoms malfunction, residents and visitors can’t communicate or gain access. Lock and Tech USA specializes in repairing all types of intercom systems, including older models that other companies refuse to service.

No Sound or Buzzing. Audio issues like static, buzzing, or complete silence indicate speaker problems, amplifier failures, or wiring issues. We diagnose and repair audio problems throughout the system.

Buttons Not Working. Unresponsive call buttons at entry panels are common problems. We repair or replace damaged buttons, connectors, and directory systems.

Can’t Buzz People In. If residents can’t remotely unlock doors, the problem may be with the door release mechanism, power supply, or intercom wiring. We restore door release functionality.

Video Intercom Display Problems. Blank screens, distorted images, or “no signal” messages on video intercoms require specialized repair. We fix cameras, monitors, and video signal issues.

Apartment Units Not Receiving Calls. When specific apartments can’t receive intercom calls, we trace and repair wiring problems, replace faulty handsets, and fix distribution amplifier issues.

Crackling or Distorted Audio. Poor audio quality throughout the system often indicates amplifier problems or failing components. We replace defective amplifiers and restore clear communication.

Complete System Failure. If the entire intercom system is dead, we diagnose power supply problems, main control unit failures, and building-wide wiring issues.

Outdated Technology. Many NYC buildings still have 30-50 year old intercom systems with failing components. We repair vintage systems and can also recommend cost-effective upgrade paths.

ButterflyMX, 2N, Aiphone, Comelit, Siedle, Alpha Communications, Lee Dan, DoorKing, Viking, Mircom, Nutone, and dozens of older brands. We maintain an extensive knowledge base of legacy intercom systems common in NYC buildings.

Access control systems manage who enters your building and when. Malfunctioning access control creates security vulnerabilities and operational headaches. Lock and Tech USA repairs card readers, keypads, magnetic locks, and complete access control networks.

Card Readers Not Working

Proximity card readers and RFID readers can fail due to power issues, wiring problems, or internal component failures. We repair or replace readers while maintaining your existing credentials.

Doors Not Unlocking

If valid credentials don’t unlock doors, the problem may be with magnetic locks, electric strikes, door controllers, or power supplies. We diagnose and repair door hardware and control systems.

Keypad Entry Problems

Keypads that don’t respond, display errors, or reject valid codes need professional repair. We fix keypad issues and reprogram codes as needed.

Credential Management Issues

Problems adding or removing users, programming access schedules, or managing permissions require controller reprogramming or software repairs. We restore full system functionality.

Magnetic Lock Failures

Maglocks can lose holding force due to power problems or internal failures. We test magnetic holding force and replace locks that don’t meet security standards.

Electric Strike Problems

Electric strikes that don’t fully release or make grinding noises need adjustment or replacement. We ensure proper alignment and operation.

Controller Failures

Door controllers that go offline, lose programming, or stop responding need immediate attention. We repair or replace controllers and restore system operation.

Network Communication Issues

IP-based access control systems can experience network problems. We troubleshoot network connectivity, IP conflicts, and communication failures.

Biometric Reader Repairs

Fingerprint and facial recognition readers require specialized knowledge. We repair biometric hardware and recalibrate readers for optimal performance.

Fire alarm systems are life-safety equipment that must function perfectly when needed. Malfunctioning fire alarms put lives at risk and can result in code violations. Lock and Tech USA provides emergency fire alarm repairs and diagnostic services for residential and commercial properties.

System in Trouble Condition

Trouble signals indicate problems with detectors, wiring, power, or communication. We diagnose trouble conditions and restore normal operation quickly.

False Alarms

Nuisance alarms disrupt business and waste emergency responder time. We identify and fix detectors, circuits, or programming causing false triggers.

Detectors Not Responding

Smoke detectors, heat detectors, and manual pull stations that don’t activate during testing need immediate repair or replacement. We test all devices and replace non-functioning units.

Notification Devices Not Working

Horns, strobes, and speakers that don’t activate during alarms create dangerous situations. We repair wiring, circuits, and notification appliances.

Control Panel Issues

Fire alarm control panels that display errors, won’t acknowledge alarms, or have power problems require expert diagnosis. We repair panels and restore full functionality.

Communication Failures

Fire alarm systems must communicate with monitoring stations or building automation systems. We repair phone line connections, cellular dialers, and network communication.

Low Battery Backup

Backup batteries ensure fire alarms work during power outages. We test battery capacity and replace weak or failed backup batteries.

Zone Faults

Specific zones showing faults indicate wiring problems, short circuits, or detector issues. We trace circuits and repair zone problems.

Annual Testing Failures

If your system fails annual inspection, we provide repair services to bring it into compliance before re-inspection.

Fire alarm repairs must comply with NFPA codes and local fire department requirements. Our technicians are trained in fire alarm system standards and ensure all repairs meet code requirements. We coordinate with fire marshals and building inspectors as needed.

Security emergencies happen without warning. A failed alarm system at midnight, cameras that stop recording during a break-in, or a broken intercom locking residents out all require immediate attention. Lock and Tech USA provides true 24/7 emergency repair services throughout NYC.

Complete System Failure

Your entire security system is offline and your property is unprotected.

Alarm System Won’t Arm

You can’t activate your alarm system when leaving for the day or closing your business.

Cameras Not Recording

Your surveillance system stopped recording and you have no video documentation of events.

Intercom System Down

Building residents or office staff can’t communicate with visitors or grant access.

Fire Alarm Trouble

Your fire alarm panel shows critical trouble conditions that put safety at risk.

Break-In Damage

Criminals damaged your security equipment during a burglary and immediate repairs are needed.

Access Control Lockout

Employees or residents are locked out due to access control system failures.

When you call Lock and Tech USA with a security emergency, here’s what happens.

Immediate Answer – You reach a real person, not an answering service. We answer emergency calls 24 hours a day, 365 days a year.

Fast Dispatch – We dispatch the nearest available technician immediately. Our goal is to have someone on-site within 2-4 hours for true emergencies.

Fully Stocked Vehicles – Our emergency service vehicles carry extensive parts inventory so we can complete most repairs on the first visit.

Temporary Solutions – If we can’t complete a full repair immediately, we implement temporary measures to restore basic security while we source parts.

Follow-Up Service – For complex problems requiring parts orders or additional visits, we schedule follow-up appointments and keep you informed of progress.