Panasonic Ceiling Fan Repaired
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.
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).
The rest of the corresponding components checked to be good so I presumed only this capacitor was the cause of the problem.
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.
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
Yogesh Panchal
August 22, 2014 at 1:47 pm
Sir,
Thanks for sharing by the way what type of capacitor is this.
Jestine Yong
August 22, 2014 at 2:50 pm
Hi Yogesh,
It is a Metallized Polyester Film Capacitor.
Jestine
ravi
August 22, 2014 at 9:58 pm
Thanks for the sharing..sir
God bless...
Robert
August 22, 2014 at 2:00 pm
Good job Mr. Yong.
Jestine Yong
August 22, 2014 at 2:46 pm
Hi Robert,
You are welcome!
Jestine
moshe
August 22, 2014 at 3:14 pm
very nice jestine, thank you for sharing!!
Jestine Yong
August 22, 2014 at 3:28 pm
HI Moshe,
You are welcome!
Jestine
skwong
August 22, 2014 at 4:57 pm
Great job done. Capacitors in remote ceiling fan always give problem after runing a number of years especially the 3 red metalized film capacitors. When you have speed problem check these capacitors.
Jestine Yong
August 22, 2014 at 8:03 pm
HI Skwong,
Thanks for the suggestion.
Jestine
hongkongpom
August 22, 2014 at 6:01 pm
Great job Jestine I am a big fan of yours!
Jestine Yong
August 22, 2014 at 8:05 pm
Hi Hong Kong Pom
Thanks.
Jestine
Mike
August 22, 2014 at 7:37 pm
Excellant work Mr. Yong. Thanks for sharing it.
Jestine Yong
August 22, 2014 at 8:04 pm
HI Mike,
You are welcome.
Jestine
Anwar Shiekh
August 22, 2014 at 8:10 pm
Working blind (without the ability to test the circuit) seems tough.
Jestine Yong
August 22, 2014 at 8:17 pm
Hi Anwar,
This is the only choice I have- No schematic and without complete system.
Jestine
Corriette
August 22, 2014 at 8:34 pm
i agree with this. i have had problems in tv too and such caps can be the problem. thanks sir Yong
Jestine Yong
August 22, 2014 at 9:09 pm
Thanks to all.
Jestine
Darcio
August 22, 2014 at 9:29 pm
Probably this capacitor is part of a capacitive power supply for the low voltage section, that explains the non-functioning remote control.
Good Job, Mr. Yong!
Merlin Marquardt
August 22, 2014 at 9:45 pm
Very nice.
Tom Dunaj
August 22, 2014 at 10:00 pm
I always enjoy articles.
Do you repair printers?
Jestine Yong
August 23, 2014 at 10:28 am
Hi Tom,
I only repair the power board.
Jestine
Faustino Reyes
August 22, 2014 at 10:01 pm
excellent, on many occasions so the reality is, no diagrams and no apparatus to test only this card and the problem.
You are a Master
kazeem okesola
August 22, 2014 at 10:11 pm
very good to detect a capacitor
Humberto
August 22, 2014 at 11:10 pm
Good repair, look how a little cap (in value) could cause a malfunction of a whole device. Congratulations.
beh
August 23, 2014 at 1:21 pm
HI MR YONG
thanks for your interesting repair report and about the new book of MR KENTi have to tell that i studied 40 pages of this valuable book so far and i found many new useful repair points specially for repair of mother boards of tvs and also the informations are expandable to mother boards of tv satelite recives that is published in the world of repair for the first time i strongly recommend the study of this book to all members as well as all the friends
thanks jestin thanks kent
Robert
August 23, 2014 at 8:13 pm
It seems like a pretty good book to me also.
Leo Saldanha
August 23, 2014 at 8:46 pm
Dear Justine:
Nice Article, clear to the buttom,
Congrats!!!
Joshua oloo
August 23, 2014 at 11:20 pm
Thanks Mr.Yong for the Article.precise and to the point.Regards.
Luciano K
August 24, 2014 at 4:40 am
Hi Mr. Jestine,
Thanks for this wonderful article. waiting for more from you sir.
Regards!
tana
August 24, 2014 at 10:33 pm
Dear Stephen,
that was a very interesting repair job.
Thank you Jestine
tana
marwan
August 25, 2014 at 1:31 am
Panasonic good very good .
Imraz
August 25, 2014 at 6:01 am
Hi Mr Jestine
Another great article by a great author. Another learning experience for all of us
Thanks
Enkhbat
August 25, 2014 at 9:39 am
dear Mr Jestine Young
Thank you for your sharing practice
It was interesting.
Best regards Enkhbat
Taring K Arioka
August 25, 2014 at 11:14 am
Thank you for this nice article. It is very helpful to me
Abdoulie Bah
August 25, 2014 at 4:36 pm
Excellent article Mr Jestine that really wonderful wish you well.
shahid ahmada
August 26, 2014 at 4:44 am
excellent you make repairing looking so easy for us thanks
Sam Montero
August 26, 2014 at 8:55 am
Hello Jestine
A capacitor with this value would normally be a voltage droping for
low voltage power supply which is regulated by a zener. This is done
to economize the power supply circuit.
Sam
Denver Guzman
August 26, 2014 at 3:49 pm
very good tutorial sir, thanks for sharing
Fernando Frias
October 19, 2014 at 7:27 pm
Thanks for the informative sharing for the repairing in electronics especially in capacitor.
Sunita
December 7, 2014 at 5:56 pm
hi jestine,
i have a cyclone remote control fan...apparently the company no longer exists in malaysia so i cant get parts.one night there was a burning smell and it completely stopped. one electrician says its the motherboard? but no point fixing...better to get a new one. what should i do?
admin
December 8, 2014 at 9:27 pm
HI Sunita,
If you do not have experience in electronics repair and the electrician already confirmed the motherboard have burnt parts then get a new fan.
Jestine
Qamar
May 2, 2015 at 2:17 pm
Hi Jestine ,
Nice to read your article provided, Today this morning my Panasonic ceiling fan suddenly stop working, some time work if i push or touch the fan and sometime not at all response. When i open the front top cover the circuit is same like your picture. After reading this article i guess i am also having the problem in that big blue capacitor . If suppose that big capacitor is faulty. Could you please tell me how much it cost that big capacitor. Tq
Jestine Yong
May 2, 2015 at 3:41 pm
HI Qamar,
It cost on about 1 USD.
Jestine
Qamar
May 4, 2015 at 2:27 pm
Thank you so much Jestine !!!
lai
May 20, 2015 at 12:03 pm
Hi Jestine,
I bought 3 KDK baby fans in Malaysia 3 years. After less than 1 year, 2 of them started having "tick tick" sound when on. I am sure it is not due to mechanical "rubbing" as the sound goes off immediately when the power is switched off. Suspect the problem lies with the electronics (PCB) which looks very similar to your Panasonic's PCB. Do u think the capacitors could cause the "tick tick" sound? If not, what do u think could be the cause?
It appears many complaint about the capacitors, so is it a quality issue with the manufacturer of the capacitors or a wrong rating selection?
Thank you.
Jestine Yong
May 20, 2015 at 4:38 pm
HI Lai,
I suggest that you check the caps first because the caps usually give the most problem.
Jestine
lai
May 20, 2015 at 4:52 pm
Hi Jestine,
Thanks for the prompt response. Will try that.
Reeko
May 31, 2015 at 5:08 pm
Hello Sir Jestine
I have been using the Remote Control Panasonic Ceiling about 4 years not stop but recently the ceiling fan cannot control the speed. The remote control also don't work to control the speed. When I plug-in the power, the fan with slowly turn and not to maximum speed. I have open up the fan and clean up all the dust. I think its the capacitor is the problem.
Can you kindly tell me the type and spec or equivalent of the capacitor so that I can replace it. Thank you in advance.
Jestine Yong
June 3, 2015 at 3:31 pm
Hi Reeko,
Its a Metallized Polyester Film Capacitor. Try buy from electronic shops and they should keep them.
Jestine
eddy
July 22, 2015 at 9:06 am
hi Jestine, i have a KDK ceiling fan that not able to go to speed number three, the max it will go is number 2, is this the same problem with the capacitor? what about slow turning speed? also that capacitor? thanks.
Jestine Yong
July 22, 2015 at 9:38 am
Hi Eddy,
Most probably yes, try check all the capacitors. Check also the remote control number 3 button.
Jestine
Vincent
October 6, 2015 at 11:15 am
Hi Jestine,
Thanks for the infor.
I noticed there is this white glue stick to side of the capacitor. How can I remove it ?
Do I need to re-apply the glue after replacing the capacitor ?
Jestine Yong
October 6, 2015 at 6:28 pm
HI Vincent,
You can just use some force with the help of test pen to gently lift it up. You do not need to re-apply the silicone. Just make sure the components are well soldered.
Jestine
Robert Calk
October 7, 2015 at 12:37 am
Hi Vincent,
I have found that the glue is easier to remove after you heat it up and make it softer.
Joe Naden
October 23, 2015 at 8:20 pm
Thanks for sharing Jestine. When the fan doesn't run at it's usual speed most of the time it's the capacitor unless if the speed is continuously variable through triac, then it becomes little more different. Even for those people well versed with this type of work, sometimes they need to be reminded not to look for complicated solutions. Thanks again Jestine
Jestine Yong
October 23, 2015 at 8:42 pm
HI Joe,
You are welcome.
Jestine
Rizal Abdullah
February 16, 2016 at 3:17 pm
Hi, this is Rizal. I have the same problem with my Panasonic MY143 model fan. It operates only on the 1st speed. Speed 2 and 3 no reaction.
I am electronically challenged !! Can I have the contact of any reliable person to sort out this issue for me.
Many thanks for your response.
Rizal
Ree
April 12, 2016 at 8:14 am
May I know where can I get the brown cap online? Tried farnell, RS but they don't have this.
At this moment, my fan can only go to the speed 1 and 2 but not 3.
Jestine Yong
April 12, 2016 at 11:08 am
Hi Ree,
Have you checked from your local electronics shop?
Jestine
Ree
June 14, 2016 at 9:02 am
Check some local store but none...Hondai, etc...
Jestine Yong
June 14, 2016 at 11:16 am
Hi Ree,
In this case you may need to buy online. Try ebay or aliexpress to see if you can find the same type and value of cap or not.
Jestine
ree
June 17, 2016 at 12:09 am
How about the shipping charges? eBay looks expensive
Jestine Yong
June 17, 2016 at 10:06 am
Hi Ree,
I'm not sure about the shipping charge-you need to check with the seller.
Jestine
JH
October 10, 2016 at 9:44 am
Hi Jestine,
Can you advise on the part/model number for the IR receiver? Do you think it will be possible to shift the location with some soldering/wiring work?
Thanks!
Jestine Yong
October 12, 2016 at 8:14 pm
HI Jh,
Sorry I do not have the part number. Why want to shift the IR location?
Jestine
JH
October 12, 2016 at 8:55 pm
i installed a led light below the fan, and its now blocking the IR sensor
Jestine Yong
October 12, 2016 at 9:11 pm
Ok noted. In this case if you can extend the IR sensor by using wires and secure it (not blocking the led light) then you can go ahead to do it.
Jestine
Joshua
December 30, 2016 at 7:00 am
Ho Mr Yong, I changed the capacitor. Now the speed 2 and 3 works. The only thing doesn't work now it is speed 1 and the off button. When I press speed 1 or the off button, it gives no response. Roughly which cap I should replace? Or other components?
Jestine Yong
December 30, 2016 at 9:53 am
Hi Joshua,
Have you checked all the big cap capacitance?
Jestine
Mokhtar
February 13, 2017 at 5:27 pm
Hi Mr Yong,
A bit off topic, sorry. We know that some fans got got 'off timer' ie we can set the fan to 'on' let say 1 hr then off automatically. May I know what that control the to 'on' for only 1 hr?
Jestine Yong
February 14, 2017 at 10:00 pm
Hi Mokthar,
Sorry I don't own this fan. If you go to the website it says to gradually reduce the fan speed according to the time setting which is 1 hour, 3 hours and 6 hour.
Jestine
Adlan
May 8, 2017 at 11:46 pm
Hi sir...where is your location..im facing similiar problem...at first just wanna throw it but after read your posting...thinking of repair it rather than buying a new one..pls mail me ur ctc number and i will send the board to you for repair...tq sir
Jestine Yong
May 9, 2017 at 7:42 am
Hi Adlan,
Sorry I no longer provide this kind of services because my company already moved into electronics training.
Jestine
Azhar
December 4, 2017 at 12:24 am
Where can I get that square capacitor? Thanks
Jestine Yong
December 4, 2017 at 5:55 pm
HI Azhar,
You can get it from local electronic shops at Jalan Pasar.
Jestine
Azhar
December 4, 2017 at 11:03 pm
Thanks. Much appreciated
Mrs Khoo
January 23, 2018 at 4:34 pm
I wish someone would come and do a good job of repairing my Rubine fan. I bought it for RM399 and when it was under guarantee, i had it repaired and they change something for free. After a few months more, guarantee was over and they came because it got slower and slower and remote does not make it faster too.
they changed something and it cost me about RM100 plus (cant remember). Now for the third or fourth time the fan has slowed down again and if i keep on paying them for the service and parts, i might as well buy a new Panasonic or KDK fan.
Jestine Yong
January 24, 2018 at 7:56 am
Hi Mrs Khoo,
Sorry we do not provide fan repairing service here. Bad capacitors are the common fault in many brand of fan. In your case, I suggest that you get a new fan since you have said that you had it repaired for the fourth time.
Jestine
Safwan Mohammad
January 31, 2018 at 10:26 am
Hello sir.. My ceiling fan brand national.. Old model one..
The problem now is about the speed.. Speed no 1 2 3 is slow but if turn to 4 very fast and same with no 5..
I already change the capasitor..
Old is 1.7 μ F + 10 0% AC 500v..
Now 1.5 μ F + 5% 50/60Hz AC450V
Because dont find the same with the old one and the shop person say can use 1.5 ... btw
the problem ia still same and no 1 , 2 3 more slower than before .. Speed no 4 & 5 same fast as before.. Why ya sir?
What should i do now to solve it.. Just learn from ur blog and dont know nothing about electrician.. Hehe..
Hopefully you understand my english.. Heheh
Jestine Yong
February 1, 2018 at 7:30 am
Hi Safwan,
A smaller value of cap will cause the fan to turn slower. Find the same value of cap to get the same speed like original.
Jestine
Marzuki
March 15, 2018 at 4:17 pm
Hi Jestin,
I m using KDK Remote Fan, It turn slower over years. I have checked the PCB and found out that one the capacitor is faulty i.e 500VAC 1.9uF. I went to jalan pasar and try find the same value but I could not find it. The shopper suggest to use 450VAC 2uf, which is I did. But after 1 - 2 month the fan getting slower again. When I chk the board, the capacitor that I change ealier leaking. I change again assuming the ealier capacitor might have a defect. Again after 1 - 2 month, its leak again ... My question, where to get capacitor with the same value (500VAC, 1.9uf)
Jestine Yong
March 17, 2018 at 11:13 pm
Hi Marzuki,
Found this link selling the cap
Jestine
Fadzil
February 1, 2018 at 10:14 pm
Hi Mr. Jestine,
My remote control ceiling fan brand Elmark having problem to control the fan speed. The remote control also cannot control the fan speed and only hear the bip sound when i press the remote.
When i switch on the fan, it automatically swing but the remote can't control the speed or power off.
I already change the bad value capacitor but the problem still remain. Kindly please guide me. Tq
Jestine Yong
February 5, 2018 at 9:38 am
Hi Fadzil,
Since you have checked the caps in the circuit board, then probably the remote control buttons could be bad.
Jestine
Chong
April 7, 2018 at 11:59 pm
Hi Jestine
Do I have to desolder the components in order to test them or they could be tested while it's on the PCB?
Thanks.
Jestine Yong
April 8, 2018 at 4:41 pm
Hi Chong,
Yes you need to solder it out to test the capacitor value.
Jestine