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Panasonic Ceiling Fan Repaired

By on August 22, 2014
panasonic ceiling fan board

 

 

 

 

 

 

 

 

 

A friend of mine brought to me his friend’s ceiling fan circuit board for repair. The complaint was no response when the remote control was pressed. He did not suspect the remote control because he could use that remote control to turn on another similar fan. The first thing I did was to look at the board and see if there is any burnt component and dry joints. There were no burnt components and dry joints.

panasonic ceiling fan board

Since I do not have the complete fan with me to hook up for testing, the only thing that I can do is to check some of the suspected components like fuse, capacitors, diodes and transistors. The first component I checked was the main fuse and it was fine. The next component was the big black square capacitor. To my surprise the capacitance value was way out.

 

It was a .82uf  275v capacitor and it measured only .142uf (see the photo below).

panasonic ceiling fan board repair

The rest of the corresponding components checked to be good so I presumed only this capacitor was the cause of the problem.

scr

Note: A shorted semiconductor could cause a circuit to cease operation thus it is a good practice to check on other components also.

Since I do not have the schematic diagram, I have to view the circuit from the back and to find out why this capacitor could cause the fan not to function. When I traced this capacitor circuit I found that it was actually connected in between one of the main ac line with another circuit. One of the functions of capacitor is to block DC and let AC to pass through. Since this capacitor value was so low thus there would be very low AC signal can pass through causing no response when the remote control was pressed.

panasonic ceiling fan board repairing

After the replacement of the capacitor was done, I gave it back to my friend. He then sent it back to his friend and fixed it- the fan worked like a charm.

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98 Comments

  1. RC

    April 8, 2018 at 2:06 pm

    Mr. Yong,
    Your sharing of knowledge is very much appreciated and thanks to you, I saved almost 1000 ringgit by fixing 3 of my kdk/panasonic ceiling fans!! You rock!

    Sincerely,
    RC

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    • Jestine Yong

      April 8, 2018 at 4:41 pm

      Hi RC,

      You are welcome.

      Jestine

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  2. Dennis Lim

    June 26, 2018 at 8:18 pm

    hi Mr.Yong ,my panasonic F-M14HW ceiling fan is not working,because i accidentally hit it with a bamboo pole when it was turning,i bought it from JB 6 months ago,can you help me to repair.

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    • Jestine Yong

      June 28, 2018 at 11:32 am

      Hi Dennis,

      Sorry we no longer do the repair service as we are now focussing on the training center http://www.noahtechelectronicstraining.com/

      Jestine

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  3. Yussof

    June 27, 2018 at 11:26 pm

    Hi,

    I have a Panasonic Bayu 5 which did not respond to the remote control. Any tips?

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    • Jestine Yong

      June 28, 2018 at 11:34 am

      Hi Yussof,

      Sorry we no longer provide fan repair service. Perhaps you need to open it up and check for any bad caps by referring to the fan repair article.

      Jestine

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  4. Ivan

    June 2, 2019 at 11:37 am

    Jestine, how about very noisy fan, is it capacitor problem as well?

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    • Jestine Yong

      June 4, 2019 at 2:27 pm

      Hi Ivan,
      When the fan is rotating and you hear a noise usually due to the motor.

      Jestine

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  5. Cairol

    July 7, 2019 at 10:19 pm

    Hi sir..
    Can we check capacitance value without desolder capacitor from the circuit? If can..how?

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    • Jestine Yong

      July 8, 2019 at 9:35 am

      Hi Cairol,

      It is not recommended to check the capacitor in circuit because of parallel circuit. Sometimes the result may not be accurate. The best is to remove one lead and test it off board.

      Jestine

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  6. John Ooi

    November 9, 2019 at 10:54 am

    Hi Jestine,
    Good morning.

    im so happy that i found this web and the circuitry is exactly same as mine.

    Problems encounter:

    1. when switch ON the fan from the main switch, it turn to speed 3.

    When use remote control to select speed 1 or 2 or OFF, the fan's motor will have a sound "Kik - kok" and the fan's speed remain as speed 3. Seems like unable to change the fan's speed or totally cannot accept the signal from remote control. Not even OFF it via remote control.

    2. i continue use the fan with speed 3 for few weeks by switch ON & OFF via the main switch since the remote control cannot control the fan.

    now the fan will continue having the sound of "kik - kok" for non stop when i switch ON from the main switch even though im not using the remote control.

    too bad, i don't have any basic equipment to check the cap and scr.
    Base on your knowledge and experience, what are the component i need to replace?
    then i'll buy and solder it.

    1. the big cap? brown color.
    2. the black cap? which you've as per above picture.
    3. SCR?

    A very big big thanks to you & have a nice weekend 🙂

    from,
    John

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    • Jestine Yong

      November 17, 2019 at 9:20 pm

      Hi John,

      Sorry for the late approval of your post as I have missed out your post! In your case, the first thing to check is all the capacitors value including the black cap using a digital capacitance meter. If all tested good then check the SCR. You can google for "how to test SCR"

      Jestine

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