Neon Sign Repair: All You Need To Know

So the big question comes up: can neon signs be repaired?

In this guide, you’ll discover everything you need to know about neon sign repair: what’s fixable, how much it costs, whether DIY is worth it, and when it’s smarter to call a pro. By the end, you’ll know exactly how to bring your sign back to life. and keep it glowing for years to come.

Can Neon Signs Be Repaired?

Yes, in most cases, neon signs can be repaired. A flickering light, a broken tube, or even a sign that doesn’t turn on at all doesn’t always mean it’s the end.

Think of neon signs like cars: sometimes it’s just a flat tire, other times it’s an engine problem. Some issues are small and easy to fix, while others need a skilled technician.

• Simple fixes: Loose wiring, a bad transformer, or dirty electrodes can often be repaired quickly.
• Moderate issues: A cracked or leaking glass tube may need to be replaced, but the rest of the sign can still work fine.
• Severe damage: If multiple tubes are broken or the entire sign is very old, replacement might make more sense.

The key is knowing that your sign isn’t automatically “dead” just because it stopped glowing. Many neon shops specialize in bringing old or damaged signs back to life, sometimes even better than before.

If your sign has sentimental value. Maybe it’s a gift, or part of your store’s identity. Repair is almost always worth checking into before thinking about replacement.

Can Damaged Neon Tubes Be Repaired?

Yes, damaged neon tubes can often be repaired or replaced.

Neon tubes are hand-crafted glass, which means they can be re-bent, refilled with gas, and resealed by a professional glass bender. The process usually looks like this:

• The broken tube is carefully removed from the sign.
• A new tube is shaped to match the original design.
• It’s filled with neon or argon gas, depending on the color.
• Electrodes are reattached, and the tube is tested.

In other words, your sign doesn’t have to lose its shape or style just because one part broke.

However, there’s one thing you need to know: this is not a DIY fix. Unlike replacing a lightbulb, repairing a neon tube involves high voltage and handling fragile glass with gas inside. Trying to fix it at home can be dangerous.

That’s why most people take their sign to a professional neon repair shop. They have the right equipment, safety training, and can even match the color perfectly. So the repaired tube blends seamlessly with the rest of your sign.

Common Neon Sign Problems and How to Fix

Not every neon sign issue means the whole thing is broken. In fact, most problems fall into a handful of categories:

• Flickering or dimming

This is often caused by a faulty transformer or loose wiring. Sometimes, cleaning the electrodes can help. A repair shop can usually swap out the transformer and get your sign glowing steadily again.

• One section won’t light up

If only part of the sign is dark, that tube may be leaking gas, or the electrode could be worn out. The solution is usually to replace or repair just that tube. not the entire sign.

• Buzzing or humming noise

A constant buzzing sound often points to transformer trouble. Replacing the transformer usually solves it.

• Completely dead sign

If nothing turns on, don’t panic. It could still be the power supply, wiring, or transformer rather than the tubes themselves. A technician can test the system and pinpoint the problem.

• Broken or cracked tube

As we covered above, a damaged tube can be remade and replaced without changing the overall design of your sign.

The important thing to remember: most neon sign issues are fixable. Sometimes it’s as simple as a swap of one component, not a full rebuild.

👉 If your sign means something to you. whether it’s your shopfront, a gift, or part of your room decor. Chances are, it can be saved.

How to Repair a Neon Sign By Yourself (Step by Step)

If your neon sign stops glowing, it doesn’t always mean it’s completely broken. Some issues are simple to check before calling a repair shop.

Here’s a safe step-by-step guide:

1. Check the Power Supply
• Unplug the sign and plug in another device (like a lamp) to make sure the outlet works.
• If the outlet is fine, test the transformer (the small box connected to the sign). A faulty transformer is one of the most common problems.
2. Inspect the Power Cord
• Look for cuts, frays, or burn marks along the cord.
• If you see damage, stop using the sign immediately—damaged cords can be a fire hazard.
3. Look at the Glass Tubes
• Carefully examine the tubes for cracks, breaks, or dark spots at the ends.
• A broken neon tube cannot be fixed at home—it must be replaced by a neon glass bender.
4. Check the Electrodes
• Electrodes (the metal tips at the tube ends) can wear out over time.
• If they look blackened or burnt, the tube likely needs professional replacement.
5. Clean the Sign Safely
• Dust and dirt can block the glow. Use a soft microfiber cloth to gently wipe the tubes.
• Never spray water or cleaning liquid directly on the sign.
6. Reset the Transformer
• Unplug the sign for 10–15 minutes, then plug it back in.
• Sometimes a simple reset fixes minor power issues.

👉 If none of these steps work, the issue is likely inside the glass tubes or wiring. Because neon signs run on high voltage, always let a professional handle advanced repairs.

❌ WHAT YOU SHOULD NOT ATTEMPT:

• Repairing or bending broken tubes (requires glass-blowing and handling high-voltage gas).
• Refilling neon or argon gas (specialized tools + dangerous chemicals).
• Fixing internal wiring (risk of electric shock).
• DIY sealing of cracks (glue or tape won’t work, and it’s unsafe).

The rule of thumb: if the issue involves glass or electricity inside the sign, it’s a job for a professional.

How Much Does Neon Sign Repair Cost?

The cost of repairing a neon sign depends on the problem. Some fixes are simple and affordable, while others require more labor and custom work. Here’s a general guide so you know what to expect:

• Basic fixes (loose wiring, dirty electrodes, small electrical issues): Around $100 – $300.
• Tube replacement (one broken or cracked section): Typically $100 – $200 per tube, depending on color and size.
• Transformer replacement: Usually $125 – $300, depending on the model and sign setup.
• Full or complex repairs (multiple tubes, rewiring, vintage or custom signs): Costs can run $300 – $1,000+.

👉 A good rule: the bigger and older the sign, the higher the cost.

Repair vs Replace: Which Makes More Sense?

Not every broken neon sign is worth repairing. And not every replacement is the best choice either. The right decision depends on a few factors:

When Repair Makes More Sense 

• Sentimental or brand value: If your sign is vintage, a gift, or central to your business identity, repair keeps that original charm intact.
• Minor issues: A single tube replacement or a transformer swap is usually quick and affordable.
• Custom designs: Replacing a unique design from scratch can be far more expensive than fixing it.

When Replacement Makes More Sense 

• Extensive damage: If multiple tubes are shattered or the whole structure is failing, the repair cost may rival a new sign.
• Very old signs: Older neon signs may keep needing repairs. At some point, replacing it with a new neon or LED version can save money long-term.
• Safety concerns: If the wiring is severely degraded or the sign has been poorly repaired before, starting fresh can be the safer option.

👉 Orant Neon even lets you customize your own neon sign, so you can get the classic neon vibe without worrying about high repair bills or fragile glass tubes.

Safety Considerations (Are Broken Neon Signs Dangerous?)

A broken neon sign can look intimidating, with shattered glass, no glow, maybe even a faint hiss. So, are neon signs dangerous? The answer is: yes, but only in certain ways.

Here’s what you need to know:

1. Electric Shock Risk 

Neon signs run on high voltage. Even small units can operate at 3,000–15,000 volts. If the wiring or transformer is exposed, touching it can cause a severe shock. This is the main reason repairs should be left to professionals.

2. Broken Glass Hazard 

The glass tubes are thin and fragile. When they break, sharp shards can easily cut skin. Handle any broken pieces carefully with gloves and never try to glue or tape them back together.

3. Gas Concerns 

Neon and argon, the gases used inside the tubes, are not toxic at normal levels. If a tube breaks, the small amount of gas escapes quickly and becomes harmless in open air. The real danger isn’t poisoning, but the broken glass and electricity.

4. Fire Risk 

While rare, faulty transformers or damaged wiring can spark and cause overheating. This is why a flickering or buzzing sign should be repaired promptly.

How to Maintain a Neon Sign After Repair

Once your neon sign is glowing again, a little care goes a long way toward keeping it bright for years.

Here are some simple but effective maintenance tips:

• Keep it clean: Dust and dirt can build up on the tubes, making your sign look dim. Wipe gently with a dry microfiber cloth while the sign is turned off and unplugged. Avoid sprays or liquid cleaners. Moisture and electricity don’t mix.
• Don’t switch it on and off too often: Neon signs actually last longer when left on for longer stretches, instead of constantly flicking on and off. Frequent switching stresses the transformer and electrodes.
• Watch for flickering or buzzing: These are early warning signs that something’s wrong. Getting small issues fixed quickly prevents bigger, more expensive repairs later.
• Protect from weather: Unless your sign is rated for outdoor use, keep it indoors. Moisture, heat, and extreme cold can damage tubes and wiring.
• Check the power source: Use a stable outlet and avoid overloading with other high-power devices. A surge protector can add extra safety.
• Handle with care: Remember, neon tubes are fragile. If you move the sign, carry it gently and avoid bumping or twisting the frame.

FAQs About Neon Sign Repair

1. How do I know if my neon sign needs repair or replacement?

If the tubes are cracked, the transformer constantly buzzes, or the sign flickers even after cleaning, it usually means repair is possible. But if multiple tubes are broken or parts are discontinued, replacement may be more practical.

2. Can repairing a neon sign change its brightness or color?

Yes. If a tube is replaced, the color may look slightly brighter than the older tubes. Technicians often balance this by cleaning or refurbishing the surrounding tubes so the whole sign looks even.

3. Do neon signs lose brightness over time?

They do. Neon gas slowly dissipates after years of use, and electrodes wear down. That’s why older signs appear dim or have “dark spots.” Refilling the gas or replacing tubes restores the brightness.

4. What’s the lifespan of a repaired neon sign?

With proper care, a repaired neon sign can last another 8–15 years, depending on usage and environment. Indoor signs usually outlast outdoor ones.

5. Are LED neon replacements cheaper to maintain than real neon?

Generally yes. LED neon signs don’t use high voltage, are less fragile, and require almost no repair. Many businesses switch to LED for long-term savings, though real neon still has that authentic glow.

Final Conclusion

Neon signs may be fragile, but they’re also surprisingly repairable. Whether it’s a broken tube, a flickering transformer, or a dim glow, most issues can be fixed by a professional without replacing the entire sign. 

But if you’re thinking about a replacement, Orant Neon is a trusted place to start. They offer custom designs, modern neon options that look just like the classic glow, and long-lasting quality that’s easier (and cheaper) to maintain.