Your dog is in the back yard. You look up to see them standing a foot beyond the end of the fence – and no correction, no warning beep at all. Your underground fence is not working.
Now what?
Don’t worry yourself out and begin to look into a totally new system just yet. Many times the problem that is not the whole system down is actually a repairable part problem. So in some instances, a minor glitch can indicate the fact that your system isn’t economically fixable.
With just one tip, you can save time, stress and maybe thousands of dollars.
This guide will show you how to determine the problem with your underground containment system – and help you know the honest truth about whether it needs a repair or a complete replacement.
First: Understand How Your System Can Fail
Underground fence systems come with three primary components, which can all fail on their own:
The boundary wire – the wire buried from 1 – 3 inches around your property. Any interruption in the loop will prevent the signal from functioning. Wire breaks are the most frequent reason for system failure in Michigan.
The transmitter (control box) – installed in your garage or basement. It provides a continuous signal over the wire. If it doesn’t, the boundary will not exist even if the wire is in place.
The receiver collar – worn by your dog. If the collar battery is out of power, if the device malfunctions or if the contacts corrode, your dog won’t get any correction even if he/she stands at the boundary.
You must know which component has failed before you can decide to repair or replace. Each one is a different situation and the fix and the price are totally different for each one.
Step 1: Check the Transmitter First
If your system doesn’t work, your transmitter is the first instrument you have to do your diagnosis. Go to your control box and observe the indicator light.
Constant green light: Transmitter is on and transmitting. The problem is likely either in the wire or the collar, rather than in the box itself.
Flashing, red, or absent light: The transmitter is detecting a problem. This is typically caused by a failure in the loop’s wire, but it could also be an issue with the transmitter or a power/surge problem.
No light at all: Do test the power outlet first (it seems obvious, but it often is not done.). If the outlet is okay and the box is dead, then the transmitter itself may be dead.
Transmitter repair vs replacement: The average lifespan of a transmitter is 10 to 15 years. If the transmitter is under eight years old and exhibits fault light operation, it would likely be best to either service or replace the unit at a cost of 100-200$ for most transmitter manufacturers. If the transmitter is more than 12 years old and is starting to fail, it may be an indicator that the system is close to the point of its own end-of-life.
Step 2: Test the Collar
Collar failure is often confused with a wire or transmitter fault. Perform a basic collar look-up first before any other diagnostics are performed.
Replace the battery first. This is a way to solve the problem far more often than you would think. Always use the brand specified battery, generic batteries may not produce the proper voltage.
Check the contact points. In Michigan’s moist summer and salty winter climate, the two metal prongs that press against your dog’s neck can corrode. Test and re-test contacts that have been cleaned with a pencil eraser or fine sandpaper.
Test the collar near the boundary wire. When listened to close to the collar, a beep will be heard if the collar is receiving a signal (even a test loop around the transmitter). If it doesn’t beep then maybe the collar is malfunctioning.
Collar repair vs replacement: We generally give the collar a life of 3-7 years according to the usage and exposure. A collar with contact corrosion that is less than 4 years old is definitely worth cleaning and retesting. If the collar is over 6 years old and is mis-correcting, not correcting, or beeping constantly, it is more cost-effective to replace it than repair it. Most replacement collars for known companies cost between $70 and $150.
Step 3: Diagnose the Boundary Wire
If your transmitter is displaying a fault light and the collar tests fine, you can be sure you have a wire break. In Michigan, wire breaks are almost entirely due to:
- In late winter and early spring, freeze-thaw soil movement
- Landscaping tasks – edging, aerating, planting
- Burrowing animals (moles and voles are a big problem in Michigan)
- Lightning or electrical surges
- Simplicity of wire age and brittleness
How to confirm a wire break: If there is a working transmitter on a loop, walk the perimeter of your yard with an AM radio tuned to the lowest end of the dial (around 530-560 kHz). Keep it horizontal with the wire path as low to the ground as possible. If it is intact, you will hear a buzzing alarm. The signal goes out at the point of the break.
Wire repair vs full rewire: It is almost always the case that a single wire break, or two or three, are worth fixing. Professional Michigan underground fence technicians can detect a break and splice it up in no time, and the cost of repair is usually less than reinstallation.
In these situations, full rewiring should be considered:
- Several gaps within several areas of the yard (5 or more)
- Wire older than 15-20 years and brittle throughout
- Under hardscaping (patios, driveways) where frequent repairs are likely to be needed
- Wrong type of wire installed virtually at the surface and hurt severally
The Repair vs Replacement Decision Tree
Apply this system to identify – and then make – clear decisions:
Dog Fence Repair should be considered almost always when:
- The system is less than 10 years old
- Failure in one component (wire, transmitter, or collar, but not all 3 at once)
- Wire break is located in an easy-to-access environment that is not hardscaped
- You have 1-3 breaks with no breaks in the remaining wire
- Parts are still available and brand is still supported (PetSafe, Invisible Fence, Innotek, Dog Guard, Pet Stop are all still supported)
Full dog fence replacement should be considered when:
- System age: 15+ years and has had multiple calls for repair in the last 2-3 years
- More than one component has failed (transmitter and wire or collar and transmitter)
- Significant hardscaping, repair access would involve breaking concrete/pavers
- Brand discontinued, no replacement parts available or more expensive than new;
- You are adding a large area – sometimes the cost of a new installation is much cheaper than modifying to the new layout
- You’re seeing a dramatic behavioral shift (new high-drive breed; your dog is escaping more often) and you’d like to upgrade to a stronger system that offers greater range or training
Michigan-Specific Factors That Affect This Decision
Michigan’s climate brings repair/replacement patterns you don’t get in warmer climates.
Annual freeze-thaw wire stress. Most of the Southeast Michigan area has a frost line of 42 inches. Fence wire installed below the ground at 1 to 3 inches – the typical depth – is exposed during the winter to substantial soil movement. If the system has sustained 10 or more Michigan winters, it is a well-installed system; if the system has had multiple breaks after 5 winters, it may have been installed too shallow.
Post-storm system failures. Lightning and power surges are common in spring and summer in Michigan and can destroy transmitters in an instant. If your system is not operational due to a severe storm, your first place to start checking is your transmitter. Again, there is usually a repair scenario rather than replacement – unless it’s a mature transmitter and more a case of upgrading.
HOA and landscaping changes. If you added hardscaping, a new driveway or patio since originally installed, your wire may now be buried under space where future repairs will be very difficult. This is a good argument for rerouting or replacing at least those areas that are currently problematic for access.
What Does Repair vs Replacement Actually Cost in Michigan?
Knowing the comparison between prices is easy in making the decision.
Typical repair costs:
- Diagnosis and repair for a single wire break: $75-$175
- Multiple wire break repairs (2 to 4 breaks): $150 to $350
- Pair of Transformers (parts): $275 to $575
- Cost of collar replacement (per collar): $70-$150
Typical full replacement costs:
- Professionally installed new underground fence system: average Michigan residential lot: $300/800
- Larger lots or more complicated layouts (wooded, acreage, irregular shape): $600-$1,500+
A simple rule of thumb: If you’re likely to spend 50 percent or more of the cost of a new system to repair the old system in the next year or so, it’s the better long-term investment to replace the existing system.
Final Verdict
The majority of underground fence failures in Michigan are single-component problems – usually a wire break, a dead collar battery, or a storm-damaged transmitter. These are repair situations, and a repair almost always costs a fraction of a full replacement.
Full replacement makes financial sense when the system is aging across the board, when repairs have been recurring, or when your yard or your dog’s needs have changed significantly since the original installation.
When in doubt, call a local Michigan underground fence professional for a diagnosis. A good technician will tell you honestly whether repair or replacement is the right call – and won’t push you toward a new install when a $100 repair will do the job.
Frequently Asked Questions: Underground Fence Repair
An on/off transmission lamp will nearly always mean that a wire has been broken somewhere in the loop circuit, even if no damage can be seen above ground. The break can be below ground as a result of freeze-thaw activity, root intrusion or animals. A professional wire break locator test can locate it in no time at all.
Simple collar battery changes and contact cleaning can be made into easy DIY tasks. Splicing and locating a wire break can be done by a determined homeowner with an am radio and wire connectors, but professional repair guarantees waterproofing is done properly and the break will not occur again within 6 months. A well-spliced isn’t worth the service call in Michigan’s wet soil.
Not necessarily. Even a 12-year-old system that has only experienced one wire break and transmitter/collar is worth fixing, if the splice is done correctly, the wire can last 20+ years. Always repair first, replace only if the transmitter or collar starts to have problems as well.
Multiple openings at the same location are often caused by neighbors trees intruding the roots, mole and voles digging, or shallow placement near a freeze-thaw cycle. In this case a permanent solution is either to reroute the wire around the trouble area, or to add wire depth around that area, not re-splice the break every time.
Collars are often manufacturer specific so a PetSafe collar does not communicate with a Dog Guard transmitter. The boundary wire, however, is universal; a new transmitter from another manufacturer may often be attached to the same wire. Before buying any new parts, a Michigan pet fence technician can determine compatibility.
Most calls in Michigan for a wire break or transmitter replacement can be finished in 24 to 48 hours or the same day. If a dog is in danger an emergency repair service is available.
Invisible Fence® brand systems employ proprietary parts which are more expensive to replace than independent systems. If you need the transmitter replaced, you might want to estimate a third party system that is compatible with your Invisible Fence® and compare the price. Your local Michigan technician, servicing all brands, can provide you with a fair comparison.