Ninja Blender Problems: Understanding and Fixing Common Hiccups

Ninja blenders are among the world’s best home appliances, offering high-quality blending capabilities for smoothies, soups, purees, and other recipes. However, like most machines, they are prone to technical malfunctions and hiccups that affect their performance and efficiency. 

And while some issues can be resolved by cleaning or adjusting the blender, others could require more advanced fixes or professional help. In this article, we’ll explore common Ninja blender problems and how to troubleshoot them effectively.

Ninja Blender Not Working – Won’t Turn On – How to Fix – BL770

Common Problems with a Ninja Blender

Blender Not Turning On

One of the most frustrating issues with a Ninja blender is when it fails to turn on. It can be caused by various factors, including:

To repair your Ninja Blender’s common hiccups, check for gasket displacement and broken blades or couplings as these common issues can affect its performance. You can refer to this article on Ninja Blender Problems: Understanding and Fixing Common Hiccups for detailed troubleshooting.

Check Power Source

The first thing you should check is if the blender is connected to a working power source. In some cases, the outlet might be faulty, or the blender’s cord may be damaged.

Here’s a simple table to help check if the power source is causing your Ninja blender not to turn on:

Faulty outlet or unpluggedPlug another appliance to that power outlet to see if it works. Check if the blender is correctly plugged into the outlet.
Tripped circuit breakerCheck the circuit breaker on the main electrical panel of your home. Reset the switch to “on” if it has tripped.
Damaged electrical cordInspect the electrical cord for any damages or breakages. If it is damaged, replace it.
Faulty power switchCheck to see if the power switch is set to “on.” If it is and the blender does not turn on, then the switch may be faulty and require replacing.

We hope that you find this table helpful. Remember to take appropriate safety precautions when dealing with electricity.

Overloaded Blender

Overloading the blender with too many ingredients can cause the motor to burn out. If this happens, the blender will not turn on until the motor is fixed.

Malfunctioning Motor

A damaged or defective motor can prevent the blender from turning on. You’ll need to disassemble the blender and check the motor for any signs of damage. If you find any, you may need to replace it.

Damaged Power Cord

A frayed or damaged power cord can prevent the blender from turning on, as it affects the power flow. In such cases, it is best to replace the cord with a new one.

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Blender Leaking

Another common issue with a Ninja blender is when it starts to leak. Some of the possible causes include:

Overfilled Blender

Excessive ingredients in the blender can lead to pressure buildup, which causes the blender to leak. Always ensure you don’t exceed the maximum limit indicated on the blender’s pitcher.

Loose Blade Assembly

A loosely fitted blade assembly can also cause the blender to leak. Check to make sure that the assembly is correctly secured to the pitcher.

Damaged Gasket Seal

A faulty gasket seal can cause the blender to leak. Inspect the seal for any cracks, tears, or deformities. If you find any, replace it.

Cracked Pitcher

A crack on the Ninja blender’s pitcher can cause it to leak. If the pitcher is damaged, it is best to replace it.

Blender Not Blending Smoothly

If your Ninja blender’s smoothies, shakes, or soups come out lumpy, here are some probable causes:

Dull Blades

Blunt or dull blades can prevent the blender from blending ingredients smoothly. Consider sharpening or replacing the blades if they are dull.

Overfilled Blender

An overfilled blender can make it difficult for the blades to blend the ingredients correctly. Always leave some space in the pitcher when blending.

Air Bubbles

Air bubbles can prevent the ingredients from blending correctly, leading to a lumpy texture of your shake or smoothie. To prevent air bubbles, tap the pitcher gently on a hard surface to release the air before blending.

Incorrect Use of Pulse Setting

Using the pulse setting for extended periods can cause the blender to overheat, affecting its blending capability. Instead, use short bursts of the pulse setting to prevent overheating.

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Blender Making Loud Noises

A noisy blender can be annoying and disruptive, not to mention a sign of underlying issues. Here are some potential causes:

Blender Making Loud Noises

Here’s a table with some potential solutions to address a noisy Ninja blender:

Overloaded BlenderReduce the amount of ingredients or blend in smaller batches.
Loose or Misaligned Blade AssemblyCheck the blade assembly and adjust or tighten it if it is loose or feels out of place.
Damaged or Faulty MotorA damaged motor can produce unusual sounds. To fix this, check for any signs of damage or seek professional help to replace the motor.
Damaged GearsReplace damaged or faulty gears in the blender.

Overloaded Blender

Overloading the blender with too many ingredients can cause it to make loud noises. Try blending in smaller batches to avoid overloading.

Damaged Gears

Broken or damaged gears in the blender can cause grinding or vibrating noises. You may need to replace the unit’s gears if they are defective.

Loose or Misaligned Blade Assembly

The blade assembly can cause loud noises if it comes loose or misaligns. Check and adjust the blade assembly and ensure it is secured correctly.

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Damaged Motor

A damaged or defective motor can cause the blender to make grinding, buzzing, or knocking sounds. You’ll need to disassemble the blender and check the motor for any signs of damage. If you find any, you may need to replace it.

Blender Blades Not Turning

If the Ninja blender’s blades fail to turn, here are the possible reasons:

Clogged Blades

Blades clogged with food particles can prevent them from turning. To fix this, disassemble the blade assembly and clean it thoroughly.

Broken or Damaged Blades

Blades that are chipped, bent, or damaged can prevent them from turning. You’ll need to replace the blades if they are defective.

Broken or Damaged Blades

If your Ninja blender’s blades are broken or damaged, here’s a simple table that outlines some possible solutions:

Chipped or Bent BladeIf the blades are chipped or bent, they need to be replaced. You can order new blades online or contact the manufacturer for a replacement.
Blunt or Dull BladeIf the blades are dull, you can sharpen them with a sharpening stone or replace them with a new set of blades.
Hairline Cracks on BladesIf the blades have hairline cracks, they cannot be repaired. You need to replace the blades for the blender to function properly.
Rust on the BladesIf you notice rust on the blades, you can try removing it with a scrub pad or by soaking the blades in vinegar. If the rust is significant, replace the blades.

Loose or Misaligned Blade Assembly

A blade assembly that is not secured tightly or misaligned can cause the blades to malfunction. Check and adjust the blade assembly to ensure it is correctly secured.

Damaged Motor

A malfunctioning motor can prevent the blades from turning. Check the motor for any signs of damage, and replace it if necessary.

How to Fix Common Ninja Blender Problems

Fixing a Ninja blender depends on the specific issue. Here are some solutions for common problems:

Blender Not Turning On

  • Check Power Source: Ensure the blender is plugged into a functioning power outlet
  • Overloaded Blender: Remove some ingredients before trying to turn the unit on
  • Malfunctioned Motor: Disassemble the blender and check the motor for any signs of damage or replace it
  • Damaged Power Cord: Replace the cord with a new one

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Blender Leaking

  • Overfilled Blender: Ensure not to exceed the maximum limit
  • Loose Blade Assembly: Fasten the blade assembly securely
  • Damaged Gasket Seal: Replace the faulty seal
  • Cracked Pitcher: Replace the damaged pitcher

Blender Not Blending Smoothly

  • Dull Blades: Sharpen or replace the blades if they are blunt
  • Overfilled Blender: Blend in smaller batches
  • Air Bubbles: Tap the pitcher gently on a surface to release air bubbles
  • Incorrect Use of Pulse Setting: Use short bursts of the pulse setting

Blender Making Loud Noises

  • Overloaded Blender: Blend in smaller batches
  • Damaged Gears: Replace the gears
  • Loose or Misaligned Blade Assembly: Adjust the blade assembly correctly
  • Damaged Motor: Check and replace the motor if necessary

Blender Blades Not Turning

  • Clogged Blades: Disassemble and clean the blade assembly thoroughly
  • Broken or Damaged Blades: Replace the blades
  • Loose or Misaligned Blade Assembly: Adjust the blade assembly until it is secured correctly
  • Damaged Motor: Check and replace the motor if necessary

Overall, the key to fixing a Ninja blender is to identify the exact problem and apply the appropriate solution. Be patient and careful when disassembling or reassembling the blender, and if in doubt, seek professional help.


In conclusion, Ninja blenders are reliable home appliances that can experience several technical hiccups. By understanding the common problems and fixing them effectively, you can continue to enjoy your smoothies, soups, and purees without worry. 

With this guide, you can identify the specific issue with your Ninja blender and troubleshoot it correctly. Remember to follow safety precautions when handling the blender’s components, and if the problem persists, don’t hesitate to consult a professional technician.

Further Reading

Here are some resources you can use to learn more about fixing your Ninja blender:

My Ninja Blender Won’t Start!: This article offers practical tips to fix various reasons why your Ninja blender may not be turning on, including a walkthrough of some of the tools you may need for troubleshooting.

Ninja BL663CO Troubleshooting: This Wiki offers a comprehensive guide on how to uncover, diagnose, and fix various types of issues that may be affecting your Ninja blender’s performance.

Reasons Your Ninja Blender Stopped Working: This article delves into the various symptoms and issues that can arise when using a Ninja blender, identifying possible reasons why the blender may have stopped working, and how to resolve the problems.


What should I do if my Ninja blender is not turning on?

Suppose your Ninja blender won’t turn on, check for basic things such as a power source, the power cord, overloaded blender, or a malfunctioning motor.

Why is my Ninja blender leaking?

Ninja blender may leak because of overfilled blender, loosen blade assembly, damaged gasket seal, or cracked pitcher.

How do I prevent my Ninja blender from making loud noises?

To avoid loud noises, ensure you blend in smaller batches, adjust the blade assembly correctly, and replace damaged gears.

What causes a Ninja blender to have dull blades?

Blunt or dull blades of a Ninja blender can be caused by frequent use or not adequately cleaning the blender.

How do I fix a stuck blade in a Ninja blender?

To fix a clogged blade in your Ninja blender, disassemble the blade assembly, remove food particles clogging the blades, and reassemble the blender.