How to Fix a Harmonica: A Step-by-Step Guide to Get Your Instrument Working Again

Photo of author

If you’re a harmonica player, you know how frustrating it can be when your instrument unexpectedly stops working. Fortunately, there is a way to fix your harmonica and get back to playing your favorite tunes. In this article, I’ll show you how to fix a harmonica step-by-step so you can get back to enjoying playing your harmonica again. From identifying the problem to cleaning and reassembling the harmonica, I’ll guide you through the entire process. So let’s get started – let’s learn how to fix a harmonica!

Anatomy of a Harmonica

Anatomy Of A Harmonica

Part Description
Reeds The reeds are the metal rods that vibrate when air is blown over the comb. The reeds are held in place by a metal frame and separated by a slot in the comb.
Comb The comb is the plastic piece between the reeds and the cover plates. It has slots in it that separate the reeds and also serves as a chamber for the air.
Cover Plates The cover plates are the metal pieces that cover the reeds. They are held in place by screws and can be removed to expose the reeds.
Mouthpiece The mouthpiece is the part of the harmonica that is placed in the user’s mouth. It is the source of the air that is blown over the reeds.
Housing The housing is the plastic or metal casing that holds all the parts of the harmonica together. It is usually made of plastic and has a handle for carrying the harmonica.

Common Problems

Common Problems

Problem Solution
Harmonica doesn’t play Clean reeds with a soft cloth and check for any blockages.
Harmonica producing out of tune sound Check tuning of reeds and tune accordingly.
Harmonica producing weak sound Check spring strength and adjust as necessary.
Harmonica producing distorted sound Clean reeds, check for any blockages, and replace if necessary.

Discover Top 3 Harmonica Bestsellers

Bestseller No. 1
East top Diatonic Blues Harmonica Key of C, Blues Harp Mouth Organ 10 Holes 20 Tones 008K with Blue Case, Standard Harmonica For Adults, Professionals, Beginners and Students
  • Professional harmonica for adult-East top 10 hole professional diatonic harmonica, suitable for Blues, Folk, Rock, Country, Jazz etc. Great for professional harmonica players and beginners. This Professional Blues Harmonica has exquisite workmanship, beautiful appearance, accurate tone and responsive.
  • Rich sound, responsive, airtightness - Precision-made plastic comb with phosphor bronze reeds; 1.2mm thickness reed plate is easier to get the higher pitch, rich sound and timbre. The reed plate with electroplating antirust, the hole, reed gap is better after electroplating. At the same time, you will feel comfortable when playing, easy to use the skill, such as over-blowing and bending, giving the performer a new experience.
  • Pocket size and easy to bring-(4.01x 1.06x 0.75)"/ (102x 27 x 19)mm(L x W x H), you can put it into your pocket, it can be played everywhere, such as party, school, office and trip etc.
  • Beautiful packaging- The package is exquisitely small and can be used as a birthday present, a gift for further study, a holiday souvenir or a business meeting gift and wedding anniversary etc.
  • Package includes 1x harmonica (key of C); 1x instruction and 1x cleaning cloth. We are the harmonica manufacturer of the East top brand.Backed Up with East top 30 Days Unconditional Money Back . You can rest assured to buy our products.
Bestseller No. 2
JDR Harmonica Set of 7 (Key of C D E F G A Bb) 10 Holes 20 Tones Blues Harp Diatonic Mouth Organ armonica with EVA Protective Case for Adults Kids Beginner Professional Intermediate Student Gift Black
  • ♪ Professional harmonica set: Excellent design and exquisite workmanship 7-pack of harmonicas includes keys of C, G, A, D, F, E, and B♭. Great harmonica system suitable for blues, folk, pop, jazz, country and classical music.
  • ♪ High-quality Raw Materials: The JDR harmonica high-sensitivity phosphor bronze reed plate differs from inferior aluminum, it is made of copper. The 1mm of copper reed plate is conducive to the sound more clear and melodious.
  • ♪ Precise Manufacturing: The JDR harmonica comb is specially crafted with non-toxic food-grade ABS resin and chrome-plated mirror. It is not only lightweight, but also can prevent rust and corrosion. JDR harmonica set is child-friendly and safe, and has also passed Food Safety Certification.
  • ♪ Portable Size: The JDR 10 holes 20 tones key of C harmonica is cleverly designed with a streamlined body. Each harmonica is 4.09"x0.31"x1.10", you can slip into the pocket wherever you go. Each harmonica is carefully tuned and tested during manufacturing to ensure best sound and quality.
  • ♪ JDR Service Policy: Package includes 7-pack of Harmonica, premium protection box. For any possible defective products 90 days no reason to refund, 180 days replacement service.
Bestseller No. 3
Fender Blues Deville Harmonica, Key of C
  • Key of C
  • Designed to sound as good as the Fender brand name would suggest
  • Its richer tone and pitch is made possible with a molded PVC comb and precision phosphor bronze reeds
  • Traditional shape and black satin covers will make your harmonica look as good as it sounds
  • Includes vented hard plastic case

Fixing a Loose Reed

Fixing A Loose Reed

  • Check if the reed is loose. If it is, then the harmonica needs to be opened.
  • Use a screwdriver to loosen the screws of the harmonica and remove the cover plate.
  • The reed is held in place by a metal tongue. Use tweezers to push the tongue towards the reed and make sure it is firmly in place.
  • Put the cover plate back in place and secure it with the screws.
  • Test the harmonica and see if the reed is securely in place.

Replacing a Reed

Replacing A Reed

Step Explanation
1 Remove the reed plate from the harmonica by unscrewing the screws.
2 Look at the reeds and identify the reed which needs to be replaced.
3 Carefully remove the reed from the reed plate. Use tweezers or a small screwdriver to do this.
4 Purchase a replacement reed from a music store or online retailer.
5 Carefully fit the new reed onto the reed plate. Ensure that the reed is securely mounted in the plate.
6 Re-assemble the harmonica and test the new reed.

Replacing a Cover Plate

Replacing A Cover Plate

  • Unscrew the two screws located on either side of the cover plate.
  • Carefully remove the old cover plate.
  • Check the new cover plate to make sure it is in good condition and fits correctly.
  • Line up the new cover plate with the holes on the sides and screw it in place.
  • Test the cover plate to make sure it is secure.

Cleaning and Maintaining a Harmonica

Cleaning And Maintaining A Harmonica

  • Clean reeds with a soft-bristled brush.
  • Remove any dirt or debris from the reeds with a cotton swab.
  • Remove any excess saliva or grime from the reeds and the body of the harmonica with a damp cloth.
  • Dry the harmonica thoroughly with a soft cloth or towel.
  • Oil all metal parts of the harmonica using a drop of machine oil.
  • Check the reeds for any signs of corrosion or damage.
  • Replace any broken or damaged reeds.
  • Tighten any loose screws.
  • Clean the inside of the harmonica with a soft brush.
  • Store the harmonica in a cool, dry place.

Tips for Troubleshooting

Problem Solution
Harmonica is not producing any sound Check for air leakage, ensure reed plates are properly installed, check for obstructions
Harmonica is producing a distorted sound Check for air leakage, check for obstructions, clean and lubricate reeds
Harmonica is producing an out of tune sound Check for air leakage, adjust tuning screws, check for obstructions, clean and lubricate reeds
Harmonica is producing a weak sound Check for air leakage, adjust tuning screws, check for obstructions, clean and lubricate reeds

Frequently Asked Questions

What Tools Do I Need to Fix a Harmonica?

To fix a harmonica, you need a few basic tools, including a small Phillips head screwdriver, a pair of pliers, and a set of tweezers. You may also need a small brush, a pair of scissors, and some cleaning solution. Depending on the type of repair you need to do, you may also need some replacement reeds, springs, and screws.

How can I identify and diagnose what is wrong with my harmonica?

To diagnose a potential issue with a harmonica, first check the reed plates for any signs of corrosion or rust. If the reed plates have been damaged, the harmonica will not produce a clear sound. Next, check the airtightness of the harmonica by blowing air through it and listening for any air leaks. If the harmonica has air leaks, the instrument will most likely not make any sound or will produce a weak sound. Finally, inspect the comb for any cracks or warping, as this can also negatively affect the sound quality of the harmonica.

What do I need to know before attempting to repair a harmonica?

It is essential to have a clear understanding of harmonica anatomy, the different types of harmonicas and the specific tools required for repair. Having a repair manual or guide is also helpful in understanding the process. It is also important to know how to test the reeds and make adjustments to the reed plates. Familiarity with the reed plates, reed valves and other components of the harmonica is also important for successful repair. Finally, it is important to have the right tools such as pliers, tweezers, and a soldering iron in order to complete the repair.

How can I make sure that I am properly cleaning and maintaining my harmonica?

To ensure your harmonica is properly cleaned and maintained, you should regularly clean the reeds and mouthpiece. Use a soft cloth and a mild detergent to gently wipe down the reeds and mouthpiece. Additionally, you should use a reed cleaner to keep the reeds in good condition and replace the mouthpiece if it is damaged. You should also oil the reeds regularly with a lubricant to keep them flexible and responsive. Lastly, store your harmonica in a safe, dry place to prevent damage.

What should I do if I cannot fix my harmonica on my own?

If the harmonica is in need of more serious repairs that cannot be done on your own, it is best to take it to a professional technician for servicing. This is especially important if the harmonica has any electronic components that need to be repaired or replaced. Professional technicians can also ensure that the harmonica is in proper working order and that all components are working properly.


Repairing a harmonica can be a daunting task, but following these simple steps will get you back to playing again in no time. First, use a soft cloth to clean the harmonica and remove any dirt and grime. Then, use a cotton swab to clean the reed plates and ensure they are free of debris. Next, check the mouthpiece and the reed plates to make sure they are in good condition. Finally, use a screwdriver to adjust the tension of the reed plates if necessary. With a little patience and the right tools, you can get your harmonica playing again in no time.


About the author

Hey, my name is John Peters, and I’m a co-founder and Jack’s co-editors. My country sole was born when I was not more than 4 years old and my dad brought several country records home. These were the records by Nitty Gritty Dirt Band, Asleep at The Wheel, and Neil Young. I fell in love with the genre forever back then. Before entering the university, I managed to gather a collection of over 1200 vinyl records with both classic and modern country releases.

Leave a Comment