How to repair the circuit board of Panasonic/KDK ceiling fans

In this video I will teach you how to diagnose and repair the circuit board for most Panasonic/KDK fans which uses more or less the same or similar circuit board design.
These Panasonic/KDK ceiling fan circuit boards fail pretty often especially when they are 5-10 years old but they can be repaired quite easily with minimal cost as long as you have basic knowledge on electronics and soldering. If you have an entire house running these fans you can save quite a lot of money repairing it and replacing the capacitor instead of replacing the entire board.
I never go into the removal of the board from the fan as it differs depending on fan design but mostly are simple screws from the top and/or bottom and then the board can be removed easily.

[@mnazar3601]

Thank you for sharing this knowledge. I'm now on my way to fix mine as the fan failed to rotate. I had already bought a multimeter n it is now the time to test the knowledge that you had already taught us. Thank you.

[@kanms5431]

These repairs are so so important to reduce wastage and waste, without changing a whole unit of the PCB

[@zulfadzilmohd9241]

Thanks Jin. Very educational for a tender foot diy practitioner

[@blizz8008]

Great and easy to understand explaination. Would better (or possible) if u could explain the malfunction of fan of each capacity. Anyway keep up the good work.

[@maxibob53]

Yes thanks for your explanation. It makes me wonder why the capacitors are failing often,Is it due to inferior circuit design parameters or any other reason.I have three units and have changed capacitors a few times,

[@Nightstalker1993]

Electronics all have finite life.

[@diysg1632]

The quality of the replacement parts the are not great. Most of them are knock off brands. The original shizuki capacitor is of decent quality but unfortunately they cannot be bought on the market by end users. All the replacement "BM" brand or whatever is nowhere near same quality. For the red coloured ones, nothing much can be done, there isn't much choice. But for the black X2 capacitor in the middle can buy better quality ones from brands like Panasonic or Epcos from sites like element14 and they do last.

[@isamrosdi4015]

Wonderful...tq sir

[@JansenYong1]

2 alpha fans just died on me, 1 week apart. Nothing at all when power is applied. Im suspecting a failing power supply unit. Will diagnose when I have the time.

[@MohamedAli-op1kh]

tq

[@thyaaw]

Impressive!!! I have the same model, but my fan problem is it does not switch on at all. Fuse is good. Any advice? Thanks

[@AtmaS]

Thanks for sharing your video. My KDK remote control ceiling fan is slow on the first and second-speed settings. At high speed, it works fine. I checked the 1.8uF capacitor it's showing 1.4uF and the 0.1uF capacitor is reading 0.07uF. Do you think both these capacitors need to be changed? Any pointers appreciated

[@andrew39454]

You can use mine as reference. Panasonic KY14R 140cm. -All cap must be removed from board for tested, if not the result won't valid. I experienced measure the cap on board shown good value, the when remove from board and measure again the cap is bad. - the 0.1uf cap is just filter cap, it is use for filter the power supply noise to protect the circuit as long, it won't affect the fan speed. It is connected btw L and N, that is why now new model they use safety X2 cap (Metalized Polypropylene (MPP) rectangular shape) instead of normal brown polyester cap. X2 cap is used to prevent short when the cap fail. For you case you may or may not change it, but if already dismantle why not, it only cost penny and must remember use X2 cap. - For the 1.8uf cap, for my case it is a big black rectangular (not x2) 1.7uf AC500V, diagram shown it connect two secondary coil no matter what speed, mean it is on for all 3 speeds, and its value affected all three speeds. For my cases it is good grade AC500V, that is why my fan after 25 more years the value still on mark still 1.7uf no change. - 2.9uf is for speed 1, -5.0uf is for speed 2, - Speed 3 no use any cap for primary coil, it jut use the 1.7uf for secondary coil same as as speed 1 and speed 2. - 0.82uf is series with the board , it is not affected any fan speeds, it is as a voltage divider for board power, it is not connected to the coil as load. That is why now new model also used x2 cap this particular cap for safety board protection to prevent short when it fail. Hope it help. Remember check the cap voltage, it might still hold charge even power supply is turn off, safely drain the voltage before touching it.

[@AtmaS]

@@andrew39454 Thank you for your inputs. I have bought a new board some time ago. I will try your suggestions. I am thinking how to test the board out on my workbench.

[@alvinwilliamson9496]

Any idea what is the function of each capacitor? Issue with a single speed & timer not functioning.

[@alexpassive]

if the remote receiver not function, likely which capacitor goes faulty?

[@klunboxingstudio9889]

Hi bro how much are those capacitor?

[@nuvesv6933]

Terima Kasih Jin

[@jasonfzp]

Hi, I would like to ask how do I remove the circuit board from the fan. Thanks!

[@Nightstalker1993]

have to open the plastic cover from the top before you can remove the plastic cover on the bottom, for the panasonic fan that I have.

[@yee897]

Now j know where to send my broken fan😝🤣🤣

[@StevenFung]

The Aneng multimeter good? Price?

[@suranimalajinendrasinghe3291]

I chang every thing but still no power on

[@haryzXIII]

Is there anyway to check using an analogue multimeter?

[@Nightstalker1993]

You need specifically a multimeter that supports capacitor readout. Many cheap multimeters don't even have that feature.

[@haryzXIII]

@@Nightstalker1993 I thought as much T_T thanks for the reply. Something else I want to ask is that you mentioned that most ceiling fans uses the same circuit board and you could buy them for 40-80 bucks at shops. I need to test if it's the my board that's broken or the motor on a fan. Can I just swap the board to see which is the problem? Because I noticed the one on my circuit board is slightly different than the one on your video. Thanks again.

[@Nightstalker1993]

@@haryzXIII If you have multiple of the same ceiling fan at home, you can swap the boards around for troubleshooting. You can buy the Aneng multimeter, very good and cheap

[@haryzXIII]

@@Nightstalker1993 Well, damn. That's a very good idea. I wouldn't have thought of that lol. Thanks a bunch.