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A Dead Hair Trimmer Brought Back to Life

By on June 23, 2020
hair trimmer repair







A retired teacher and a family member brought this hair trimmer for repair. As he walked into the shop and handed the device over to me, I felt some water coming out of it and I when I asked the customer about it, he answered and said that he  washed the blades under running water about one week ago and since then, the device was no longer working.

how to repair hair trimmer

When I checked the user manual for this device, it stated that it was a water proof device and it is ok to wash the blades under running water but when I opened the device I saw something the opposite of what the specification say.


Take a look

service hair trimmer

As I took the screws off, I was able to go inside the machine and see what was going on there and when I did that, I saw this mess.

how to fix hair trimmer

The battery  connection was the first sign of corrosion and I was expecting the worse.

fixing hair trimmer

That is the motor inside the device and as you can see, it is rusty and corroded and that explained why the machine was not running.

The main board was not harmed since it was in a protective plastic cover and I was happy to see that. 

how to maintain hair trimmer

I took the whole motor and the blades out of the casing and this what I saw. I was lucky to have the same kind of device that came for repair but it was not fixed so I took the motor from there and put it on this device. Sorry I forgot to take a photo of the process.

Anyway, the customer was happy to see his hair trimmer alive again and I suggested to him not to wash it under running water again and hope for the best.

Mission Accomplished.

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 repair articles in the link below:




  1. Parasuraman S

    June 23, 2020 at 8:37 pm

    Very professional fix as usual! A beamingly satisfactory customer too, perhaps!

    • Waleed Rishmawi

      June 24, 2020 at 6:28 pm

      Parasuraman: thanks man. have a blessed day

  2. Anwar Y Shiekh

    June 23, 2020 at 8:51 pm

    I have a Panasonic shaver that can supposedly be used wet or dry, but soon moved it to dry use only after upgrading its rechargeable batteries to eneloop.

    • Waleed Rishmawi

      June 24, 2020 at 6:30 pm

      Anwar: even when they say wet or dry I just do not trust the manufacture any more simply because they are lying and the proof is the repair I just did. have a blessed day

  3. Albert van Bemmelen

    June 23, 2020 at 10:29 pm

    I guess that probably the silicon or other kind of water protective shield in the device was no longer functioning. Which often happens after the device was opened. Why the customer most likely now has to quit using it with water as he was used to.

    • Waleed Rishmawi

      June 24, 2020 at 6:32 pm

      Albert: there was no silicon nor was just sitting there collecting water. the main board was in protective cover but still I could see some water on board. have a blessed day

      • Albert van Bemmelen

        June 28, 2020 at 10:50 pm

        Yes, manufacturer's probably just mean splash water proof when they say fully waterproof, which the devices are obviously not? Have a blessed week.

  4. Gassan Ali

    June 23, 2020 at 11:40 pm

    A straightforwar repair!Whether it's simple or complex, it's always been a learning opportunity for me. Waterproofing is a debatable topic. A lot of customers will be reluctant to wash their expensive devices even though the manual guarantees them to be waterproof because experiecne has proven otherwise too many times. Things are getting improved day by day and waterproofing will also get better hopefully!

    • Waleed Rishmawi

      June 24, 2020 at 6:34 pm

      Gassan: yea, the thing is the manufacture is basically lying to the customer by saying wet or dry. this repair is a proof that even they say it is waterproof yet it was not. sad but true. have a blessed day


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