Shark Nv370 Brushes Not Turning On

If your Shark NV370 brushes are not turning on, you’re facing a common but frustrating problem. This issue stops your vacuum from cleaning properly, leaving dirt and hair behind. Don’t worry, though. This guide will help you fix it step by step. We’ll cover all the simple checks and more involved repairs you can try yourself.

This specific problem means the roller brush at the base of your vacuum has stopped spinning. You might hear the motor running, but the brush won’t move. It’s usually caused by a simple blockage, a worn part, or an electrical fault. Let’s start with the easiest solutions first.

Immediate Checks and Simple Fixes

Before you take anything apart, do these quick checks. They solve the majority of cases where the Shark NV370 brushes are not turning on.

Check the Power Mode: Make sure your vacuum is set to “Carpet” mode, not “Hard Floor.” The brushroll automatically disengages on hard floors to protect them.
Inspect for Blockages: Turn the vacuum over and look at both ends of the brushroll. Hair, string, and carpet fibers can wrap so tightly they lock the brush. Cut and remove all debris with scissors.
Test on a Different Surface: Try the vacuum on a medium-pile carpet. Sometimes, on very thick or very thin carpet, the brush can have trouble engaging.

Step-by-Step Deep Cleaning of the Brushroll

If a quick look didn’t help, a full clean is needed. Follow these steps carefully.

Unplug the Vacuum: Always disconnect power before working on the vacuum.
Release the Bottom Plate: Turn the vacuum over. Find the latches or screws on the bottom cover (near the brushroll). Release them to take the cover off.
Remove the Brushroll: You will usually see two end caps holding the brushroll. Press the clips or tabs on each side to release it and lift the brushroll out.
Clean Thoroughly: Use scissors to carefully cut and remove all hair and threads wrapped around the brushroll and its bearings. Wipe it clean.
Check for Free Movement: Manually spin the brushroll with your hand. It should turn smoothly and freely without any grinding noise. If it’s stiff, the bearings might be damaged.
Reinstall: Place the brushroll back, ensuring the ends are seated correctly in the slots. Snap the bottom plate back on until it clicks securely.

What If the Brushroll Still Doesn’t Spin?

After a deep clean, the brushroll should move easily by hand. If it’s installed correctly but still won’t turn on with power, the issue is likely mechanical or electrical. Let’s investigate further.

Examining the Belt and Brushroll Bearings

A broken belt or seized bearings are common culprits. Here’s how to check them.

Locate the Drive Belt: With the bottom plate off, find the rubber belt connecting the motor to the brushroll. It should be snug, not loose or stretched out.
Check Belt Condition: Look for signs of cracking, melting, or snapping. If it’s damaged, it needs replacement. Belts are wear items and should be changed every 6-12 months with regular use.
Inspect the Bearings: The plastic bearings at each end of the brushroll housing can wear out or become clogged. Spin them with your finger. They should spin quietly. If they are gritty or won’t spin, they need to be cleaned or replaced.

Replacing the belt on a Shark NV370 is straightforward. You can order a genuine Shark replacement belt online using your model number. Make sure you get the right one, as belts vary between models.

Electrical and Switch Troubleshooting

If the brushroll moves freely and the belt is good, the problem might be electrical. This involves a bit more diagnosis.

Brushroll On/Off Switch: Some models have a separate switch to turn the brushroll on and off. Test this switch by toggling it several times while the vacuum is running (on carpet mode). Listen for a click and see if the brush engages.
Check Electrical Connections: Unplug the vacuum and remove the bottom plate. Look for any wires leading to the brushroll motor or switch. Ensure they are firmly plugged in and not pinched or cut.
Test the Brushroll Motor: This is more advanced. The brushroll is driven by a small electric motor. If you have a multimeter, you can check for continuity. If the motor is burned out, it will need to be replaced as a unit.

Be very careful when checking electrical parts. If you’re not comfortable, it’s best to contact a professional. Sometimes a wire just comes loose and is an easy fix.

When to Consider a Professional or Replacement

You’ve tried all the DIY fixes, but your Shark NV370 brushes are not turning on. What now?

Contact Shark Customer Support: Shark has a helpful support team. They can offer specific advice, confirm part numbers, and may send you a replacement part if under warranty.
Weigh Repair vs. Replacement Cost: If the main brushroll motor is faulty, the repair cost might be high. Compare the price of a new motor plus your time to the value of your vacuum.
Look for Authorized Service Centers: Shark has repair centers across the country. They can provide a definitive diagnosis and fix the problem correctly.

Remember, regular maintenance is the key to preventing this issue. Clean the brushroll and check the belt every month, especially if you have pets or long hair in your household. This simple habit extends the life of your vacuum significantly.

Preventative Maintenance Tips

Stop problems before they start. Follow this easy maintenance routine to keep your Shark NV370 running like new.

Weekly Brushroll Check: Quickly peek at the brushroll each week to remove any large hair wraps before they get too tight.
Monthly Deep Clean: Once a month, take the bottom plate off and remove the brushroll for a thorough cleaning, as described earlier.
Belt Replacement Schedule: Mark your calendar to replace the drive belt every 9 months, even if it looks okay. A worn belt loses grip and strains the motor.
Clear the Air Path: Check the hose and filters for clogs. A full vacuum can cause the motor to overheat and effect brushroll performance.

Sticking to this schedule is the best way to avoid a situation where your vacuum’s brushes won’t turn on. It saves you time and money in the long run.

Frequently Asked Questions (FAQ)

Q: Why did my Shark vacuum brushroll suddenly stop working?
A: It’s usually a sudden jam from a large object, a belt that finally snapped, or a large clump of hair that wound itself around the bearings overnight.

Q: Can I use any belt to replace the one in my NV370?
A: No, it’s important to use the correct Shark replacement belt for your specific model. Using the wrong size or type can cause poor performance or damage.

Q: Is it worth fixing an old Shark vacuum?
A: Often, yes. Sharks are built to be repairable. If the main suction motor is strong, fixing the brushroll is usually cost-effective compared to buying a whole new machine.

Q: How do I know if my brushroll motor is bad?
A: Signs include a burning smell from the vacuum head, the motor not making any noise when the brush should be on, or visible damage to the motor casing. Testing with a multimeter is the surest way.

Q: Where can I find a manual for my Shark NV370?
A> You can download the official owner’s guide from the Shark website. Just enter your model number in the support section. It has a parts diagram which is very helpful.

Dealing with a vacuum that won’t clean properly is annoying. But in most cases, the issue of Shark NV370 brushes not turning on is something you can fix yourself with a few simple tools and a bit of patience. Start with the easy checks for blockages, move on to cleaning and belt inspection, and you’ll likely find the solution. With regular care, your Shark will keep your floors clean for years to come.