Neon Sign Repair: Helpful Tips and Tricks for Fixing Your Broken Sign

Neon signs are bright and beautiful. They can showcase products to generate awareness and sales for businesses, create an artistic focal point for a photo op, or add a cozy aesthetic to your home. But when your neon sign breaks, figuring out how to repair it can be a headache. Because classic neon signs are often handcrafted, with no two exactly alike, it can be particularly difficult to determine where to start.

We’re here to help. Read on to learn what to expect, how to handle your broken neon sign, and the next steps you can take to repair your sign.

Are Neon Signs Dangerous? 

A well-made and properly functioning neon sign isn’t dangerous to be around. However, if you’re going to actually be handling your sign, you should always approach it with extreme caution. This is especially true if it is an older sign or if there is any chance it might be broken. Between shattered glass, electrical wiring, and potentially dangerous gases, neon signs come with a large number of potential safety hazards. Given this, it is incredibly important to make sure you take the proper safety precautions around your neon sign. 

Always turn off and unplug your neon sign before touching it. This is non-negotiable.

Why shouldn’t you handle your sign while it’s on? While LED signs typically operate at 12–24 volts, neon signs require 9,000 to 20,000 volts to ionize the gas inside and illuminate. Touching a broken neon sign while it's still plugged in can cause fatal electric shock.

Beyond electricity, there are two additional hazards in older signs:

• Lead exposure: Many vintage neon signs were made with lead-containing glass. The amount is generally too small to cause toxicity through normal handling, but broken glass can release fine particles.
• Mercury: Some neon signs — particularly older blue ones — use mercury vapor to produce their color. If you suspect a leak or break in one of these signs, wear gloves and a mask and ventilate the area before handling anything.

All neon signs require additional caution due to their use of glass, which is more fragile than it looks. The process of heating and bending glass tubing to create neon tube shapes weakens it, making it significantly more prone to shattering than standard glass.

Can My Neon Sign Be Repaired? 

For the most part, the state of disrepair your sign is in will determine how expensive the repair will be. Most neon signs can be fixed, though the cost of repairing them varies depending on the age and quality of the sign and the extent of the break. 

For older or vintage neon signs: Do not attempt a DIY repair yourself. Take your sign directly to a certified neon sign technician. Older signs may use hard-to-source components, and the high-voltage transformer work involved requires professional training. A skilled technician can also assess whether the sign is worth repairing at all; sometimes an aging sign that's just getting dim has simply reached the end of its natural lifespan. Traditional neon signs typically last 10–12 years on average.

For newer signs: If your sign is newer (and mostly intact), you can find some DIY walkthrough solutions for fixing your sign online. This is particularly true for straightforward issues like a broken transformer or shorted wires. However, professional evaluation is still the safest route. Mistakes on high-voltage equipment can cause further damage to the sign and potentially injury to you.  

For brand new signs: Before spending anything on repair, check the warranty and return policies on your sign. Most signage companies don’t offer refunds on custom pieces, but many will provide warranties covering manufacturing defects. Reading the documentation closely before looking into repair options could save you a substantial amount of money.

Common Neon Sign Problems and What They Mean

If you're trying to diagnose what's wrong before calling a technician, here are the most common issues:

• Sign won't light at all: Usually a transformer failure, a broken tube, or a wiring problem. This is one of the most common ways in which neon signs break.
• Flickering or intermittent glow: Often indicates a loose connection, a failing transformer, or a gas leak within the tubing.
• Dimmer than usual: Could be normal aging (neon tubes gradually lose brightness over years of use) or a low-level gas leak. If the sign is 10+ years old, it may simply be near the end of its lifespan.
• One section is dark: Neon signs are wired in segments. A dark section often means a single tube has cracked, lost its gas, or has a failed electrode — the rest of the sign can still work while that section is out.
• Buzzing or humming: Some hum is normal for neon (it's part of the charm). But a louder-than-usual buzz can signal a transformer that's working too hard or beginning to fail.

How Much Does it Cost to Fix a Neon Sign?

All neon signs are different, meaning there’s no single price for neon sign repair. The cost depends on the type and extent of damage, the size and complexity of the sign, and the experience level of the technician you hire.

Here’s a rough breakdown of expected costs:

A few additional factors can drive costs even higher:

• Vintage signs often require custom-fabricated replacement tubes and may involve matching specific glass colors that are no longer produced.
• Multi-transformer signs charge separately for each transformer replaced.
• Access and labor can add significantly to the final bill, especially if the sign is mounted high, outdoors, or in a difficult location.
• Technician experience: more seasoned professionals charge more, but they're also more likely to diagnose the real problem and fix it correctly the first time.

One important reality check: for many neon sign breaks, especially glass damage, the repair cost can rival or exceed the original price of the sign. It's worth getting a few quotes and comparing repair costs against the price of a new sign before committing.

How to Find a Neon Sign Repair Shop

Not every sign shop or electrician is equipped to work on neon. While search terms like “neon sign repair near me,” “fix neon sign,” or “neon sign shop [your city]” will surface local options, it is important to additional research to confirm the business you’re looking at can handle neon. Many cities also have sign associations (like the United Sign Association) with member directories.

In conducting additional research on these resources, you should look for the following:

• Specialty neon experience: Look for shops that specifically advertise neon sign repair, not just general electrical or sign work.
• Portfolio or reviews: A reputable shop will have examples of previous neon repairs. Check Google, Yelp, or the Better Business Bureau to confirm the legitimacy of the company you’re looking at.
• In-person assessment: Be wary of shops that quote repairs without seeing the sign. Because there is so much variance between neon signs, there is no such thing as a reliable phone estimate when it comes to neon repair.
• Multiple quotes: For any repair over $200, it's worth getting 2–3 quotes to compare pricing and timelines.

How To Maintain a Neon Sign to Prevent Future Damage

Routine care can extend the life of your neon sign and reduce the frequency of professional repairs. While this cannot prevent breaks in the glass, it can minimize the need for professional repair services.

The first rule of thumb in preventing future problems is leaving your neon sign on 24/7 when not handling. While this may increase energy costs, neon signs perform better and last longer when left on continuously. Frequent on/off cycling stresses the transformer and causes your neon sign to fail sooner.  For signs that you need to turn on or off, like OPEN or CLOSED signs, it may be better to consider an LED sign alternative.

Regularly cleaning your neon sign can also prevent damage and help keep your sign shining bright. Once again, always turn off and unplug your neon sign before handling it. A soft cloth or clean paintbrush is effective for removing dust, dirt, cobwebs, and other buildup that can block light output and trap heat. Always avoid any liquid cleaners near electrical components.

Be extremely careful when handling the neon sign. Tempering the glass to create neon tubing weakens the glass, making it fragile and much more prone to breakage than other types of glass.

If your neon sign is outside, you may also want to consider investing in a bug trap near the sign. Your bright neon sign will be a beacon to bugs, which can partially block the light and require you to clean the sign more often.

Is Repairing Your Neon Sign Worth It, Or Is It Time for a New Sign?

For vintage or sentimental pieces, professional neon repair is almost always worth pursuing. A skilled technician can restore a sign that's decades old to like-new condition, and some repairs (like a transformer swap) are genuinely affordable.

For business signage, the math often tells a different story. When repair quotes approach or exceed the cost of a replacement sign, and when your sign being out of commission costs you in lost sales, a new sign may be the smarter investment.

If you’re in the market for a new sign, SpellBrite’s LED signs are an effective solution for replacing old neon. SpellBrite has been innovating in the LED lighting space for over twenty years, and is specifically designed to address many of the pain points of traditional neon. Our signs are completely shatterproof and cool to the touch, with UL and CE certifications to ensure your safety. Plus, SpellBrite is backed by a 30 day risk-free trial and a 1 year warranty. While we don't offer neon sign repair services, we're happy to help you think through your options and find the right signage solution for your situation.

Browse our selection by industry — including open signs, restaurant signs, smoke shop signs, and many more — or get an instant online quote for a custom sign. 

Call us at (312) 575-9620 or email [email protected] with any questions.

Fixing Neon Signs: Frequently Asked Questions

How long do neon signs last? Traditional neon signs typically last 10–12 years with regular use, though well-maintained signs can last longer. Transformers tend to fail first, averaging around 12 years of steady operation.

Can I repair a neon sign myself? DIY repair is risky due to the high voltage involved (up to 20,000 volts). It's generally only advisable for simple, low-risk fixes like replacing an accessible external wire on a newer sign — and only if you have electrical experience. When in doubt, hire a professional.

What gas is in neon signs? Red and pink signs typically use actual neon gas. Other colors use different gases: argon (often with mercury) for blue and green, helium for gold/orange/white, and krypton for white. The specific gas determines both the color and some of the safety considerations if a tube breaks.

Can broken neon glass be repaired? In many cases, yes — a technician can replace a broken tube section and refill it with gas. However, matching the exact color of older glass isn't always possible, and replacement tube costs ($100–$200 per unit) can add up quickly on larger signs.

Is it worth repairing an old neon sign? For a vintage or sentimental piece, often yes. For standard business signage, it depends on the repair cost relative to replacement cost and the amount of downtime you can tolerate. Get a professional assessment and at least one quote before deciding.