What Electronic Devices Get Ruined by a Lightning Strike?
Last updated October 31, 2026
The short answer
How a Power Surge Damages Electronics
A lightning strike sends an immense surge of electricity through power lines, phone lines, and even plumbing. This surge travels into your home's wiring, seeking the path of least resistance. Any electronic device plugged into an outlet or connected to a coaxial cable becomes a target. The sudden voltage spike, far exceeding normal levels, instantly overloads and fries the device's sensitive microchips and circuit boards.
The damage is often instantaneous and total. You might see visible scorch marks, smell burning, or hear a pop. In other cases, the device may simply fail to turn on again. Sometimes, a surge weakens components, leading to erratic behavior or a shortened lifespan. Surge protectors can help, but a direct or very nearby lightning strike can overwhelm even those protections.
Common Household Devices at Risk
Your entertainment and communication systems are highly susceptible. This includes flat-screen televisions, desktop computers, gaming consoles, and audio receivers. Equipment like modems, routers, and Wi-Fi extenders connected to cable lines are also common casualties. Smart home devices, from thermostats to security cameras, can be damaged if they are wired to your home's electrical system.
Major kitchen appliances with electronic control boards are not safe. Refrigerators, ovens, microwaves, and dishwashers can have their digital displays and programmed settings wiped out. Even garage door openers and HVAC system controls can be affected. Essentially, if it has a plug or a wired connection and uses a microprocessor, it is at risk during an electrical storm.
- Televisions and home theater systems
- Desktop computers, monitors, and printers
- Kitchen appliances with digital controls
- Smart thermostats and home automation hubs
- Modems, routers, and related equipment
- Game consoles and audio equipment
Immediate Steps After a Lightning Strike
First, ensure everyone's safety. Check for signs of fire, such as smoke or a burning smell. If you suspect any electrical damage, it is wise to turn off the main power at your breaker panel. Do not touch any electronics or outlets if you see scorch marks, sparks, or if the area is wet from accompanying rain.
Once safe, unplug all major electronic devices. Do not try to plug them back in to test them. If you have water intrusion from storm damage, avoid walking in standing water, as it could be electrified. Document any damaged items for a potential insurance claim, taking clear photographs. Policies vary, and your insurer decides what is covered.
When Water Damage Complicates the Problem
A severe thunderstorm often brings heavy rain, which can lead to roof leaks or flooding. If lightning-damaged electronics are also wet, the situation becomes more hazardous and complex. Water can cause short circuits and corrosion, compounding the electrical damage. In these cases, the priority is to stop the water source and address the moisture to prevent further harm to your home's structure.
Water damage requires a different professional approach. Local water damage pros are trained to safely extract water, dry the area, and prevent mold. They use tools like moisture meters and dehumidifiers. Handling wet electronics is risky due to potential electrical hazards, so it's best to leave that assessment to the experts after the area is secured and dry.
Preventing Future Damage to Your Devices
The most effective prevention is to unplug electronics before a storm is forecast. This includes pulling the plug from the wall outlet, not just using a power strip's switch. For devices you cannot unplug, like major appliances, consider having a whole-house surge protector installed by a qualified electrician. These devices are installed at your main electrical panel and provide a first line of defense.
Use quality, individually plugged surge protectors for sensitive electronics like computers and entertainment centers. Remember that phone, cable, and ethernet lines can also carry surges, so use protectors with ports for those cables. Regularly inspect your protectors, as they can wear out after absorbing a surge. In regions prone to seasonal thunderstorms, these precautions are worthwhile.
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Call Now (253) 785-9361Frequently asked questions
Can a lightning strike damage electronics that are turned off?
Yes, absolutely. If a device is plugged into an outlet or connected to a cable line, it remains part of the electrical circuit. A power surge travels through these connections regardless of whether the device's power switch is in the off position.
Will my homeowners insurance cover lightning damage?
Most standard homeowners policies do cover sudden, accidental damage from lightning, including to electronics. You will typically need to pay your deductible. Policies vary, and your insurer decides what is covered. Always check your specific policy and document the damage with photos.
What should I do with a wet electronic device?
Do not plug it in or turn it on. If the area is safe and dry, you can carefully disconnect the power and move the device to a dry area. For valuable items, a professional electronics restoration service may be able to assess and attempt repair after thorough drying.