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Mosquito Zapper Racket Repaired

By on December 20, 2014









One of my friends in our housing society came to my house in the evening with his Mosquito Zapper Racket. The complaint was his racket showing charging Indication when connected to mains line but it was not killing any mosquito.

mosquito zapper racket repair

On testing. I have seen there is no Indication of Active LED while pressing momentary switch (usually when you press the momentary switch you can see the Indicator LED glow.)


I opened the racket for visual inspection but I have not found any burning mark, physical damage or any dry solder on the PCB. As I have mentioned above, the racket was showing charging indication that means charging circuit is OK. The question is why the indicator of active Momentary switch is not glowing when pressing the switch? Hence I decided to remove the PCB and check the components.

mosquito zapper racket repairs

Note: Discharge the High voltage capacitor first before you start the troubleshooting work otherwise you may get a heavy electric shock.

First I have checked the Momentary switch while testing the switch on the PCB I am not getting continuity that means switch is bad. Hence I have removed the switch from PCB and test it with continuity tester (With the help of probe I have made as shown in the photo below). It is confirmed that the switch is bad.

mosquito zapper racket repairing

Hence I have replaced the switch with new one.

mosquito zapper racket repairings

Now I have decided to test the Racket by reassembling and see what the result is!! .after the process I have pressed the Momentary switch and by touching the middle and outer grid with insulated screwdriver I am getting high voltage spark which also mean the racket is working perfectly.


Note: Once you are familiar in electronics repair, you can practically repair or try to repair any electronics device that comes in your way. It is not about the price of the device, it is more on the satisfaction that you can gain by bringing a dead device back to life again.

This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.

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  1. Robert

    December 21, 2014 at 10:05 am

    Good job Yogesh. I was hoping to see a picture of the component side of the PCB.

  2. Ameen

    February 3, 2016 at 12:11 am

    yogesh, I hv 4 faulty racket. I was worried why it goes faulty within few days. I was searching the web to find the PCB to replace. yr site gave me a guidance , now I with open all the faulty one and try to repair .

  3. Ganesh Sathe

    February 18, 2016 at 6:00 pm

    I have china made mosquto racket.It is not woring.Only red led of charge is fully glow but no guide what to check

  4. Akshay ramesh shendre

    August 12, 2017 at 12:34 pm

    Sir I have bug zapper bat charging led working and working led is working also but capasitor is not charge please tell me what is problem inside bat

  5. Priya

    January 16, 2019 at 1:29 am

    Is there anyone in Navi Mumbai or Fort area who does this work. I have 3 rackets and want to get them fixed and don't have any tools.


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