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How To Fix A Hair Trimmer

By on March 2, 2024
hair trimmer repair







A guy who recently came back from USA brought this hair trimmer for repair. The customer explained that he powered his 120 AC device through a 220 AC power and the result was a dead hair trimmer.

hair trimmer repair

I suggested to the customer to throw it away since it is a cheap one and also the motor might be damaged beyond repair


but he insisted that he wants it repaired and in case it was not repaired he was willing to pay for the time and effort spent on this repair.

how to fix hair trimmer

trimmer fix and repair

I clipped out the plastic piece on top exposing three screws out and I already took one out.

hair trimmer motor problem

All the diodes (1N4007) seen in the photo were shorted out and had to be replaced but I was not sure about the motor.

I replaced the shorted diodes hoping for the best.

1n4007 in hair trimmer repair

I was actually shocked that after replacing the shorted diodes and powering on the device through a 120 AC power source; the hair trimmer was working just fine. I guess that the diodes took all the damage protecting the motor from shorting out and that is a good thing that my time was not wasted in vain.

I called the customer and informed him about my repair success; he was very delighted with the result. I provided him with the right step down power adaptor that can handle up to 40 watts (the device is only 3 watts). There was a big smile on his face when he left the shop and to that I could say

Mission Accomplished.

waleed Rishmawi

This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.

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Note: You can check his previous article on A Dead Wax Melting Device Repaired and Maintained




  1. Parasuraman S

    March 3, 2024 at 11:14 am

    Good and amusing fix! First, I thought you got an electric shock, but later understood that it was just an exclamatory expression! Many thanks for sharing!

  2. Yogesh Panchal

    March 5, 2024 at 6:03 pm

    Good fix! Waleed


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