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China Wireless Remote Control Bulb Socket Repair

By on August 24, 2016
circuit board light bulb repairing








A good friend of mine called me over to his home and showed me this Wireless Remote control light bulb socket. The model is WRCLB3. It was purchase from USA and in a set of three, two of the three was working fine and this one was not.

My friend bought this because his wife is very ill and can’t move around a lot. So it was important that I repair this as quickly as possible.

remote control bulb

It was not very hard to open, by just removing two screws I was able to access the circuit board. The below picture shows what I found when I open the socket. A resistor had gotten hot and discolored the board. From the top view of the board it does not look like there was much component to this circuit.

wireless remote control bulb

By removing another two screws that held down the circuit board I was able to see all the rest of component. See below picture

remote control bulb repair

Looking at the circuit board it was very dirty and full of solder flux

remote control bulb circuit board

I removed the resistor and tried to make out the value of the resistor. From the picture below you can see the color bands look like Brown with white and gold. However, when I measured the resistor, look at what was the value on the next picture. It was 4.502 M Ohms. I knew that this could not be the value. I was unable to make out the color on the resistor so I called my friend and told him to open one of the two remaining he had and tell me the color code on it. When he told me the color code I could not believe it… It was a 100 Ohm resistor.

checking resistor 100 ohm

measuring resistor high ohm

I clean the board with some Isopropyl Alcohol (IPA) and solder in a new 100 Ohm resistor. Then I remembered that I did not have the remote to test it and I could not take a picture of it. The next day I took it over to him and we tested it and it work like a charm. I wanted to get this back to him quickly that I forgot to take a picture when he installed it. But the important thing was that mission accomplish.

circuit board light bulb


andre gopee

This article was prepared for you by Andre Gopee from Calitech Limited Trinidad West Indies.

Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.

By the way if you have any good repair article that you want me to publish in this blog please do contact me HERE.

Note: Please check out his previous repair article below:

No Power in Samsung LCD TV with Standby light on-Repaired



  1. Parasuraman

    August 24, 2016 at 1:41 pm

    My apologies! My finger wrongly pressed the dislike while using my mobile! So please ignore it. A good article. Thanks for sharing.

    • Andre Gopee

      August 26, 2016 at 7:28 am

      Thats Ok Parasuraman, I wont hold it against you.

  2. Yogesh Panchal

    August 24, 2016 at 3:44 pm

    Good job! Andre.

    • Andre Gopee

      August 26, 2016 at 7:28 am

      Thanks You.

  3. Albert van Bemmelen

    August 24, 2016 at 3:57 pm

    Nice repair Andre. Always handy to have a inside view of such a Board.
    PS: I hope that dear Parasuraman is not the cause of all those dislikes (LOL). But it could explain the reason for all other dislikes?

    • Andre Gopee

      August 26, 2016 at 7:29 am

      Thanks. I hope so myself.

  4. suranga bandara, Suranga Electronics

    August 25, 2016 at 6:40 pm

    Well done Mr,
    Good Repair job !

  5. Humberto

    August 25, 2016 at 11:05 pm

    Good repair Andre. Congratulations.

  6. mahmoud_tajpour

    August 26, 2016 at 2:00 am

    Hi Mr.Gopee well done.

  7. Robert Calk

    August 26, 2016 at 3:13 pm

    Good job, Andre. Mr. Yong's e-book, "How to find burnt resistor value", is a good book to have when you can't read what the value is. Luckily you had another device to check to make it easier.

  8. Bulent NUR

    August 27, 2016 at 7:45 pm

    Good job - mission acomplish thats all!

  9. Sbsshaaban

    August 30, 2016 at 6:19 pm

    Good woork, Andre

  10. Benjamin E.

    August 31, 2016 at 8:16 pm

    Wow, what a strange mode of failure!

    I guess what happened is the extra flux caused more current to flow, overheating that resistor.

    I have learned the hard way in the past about flux ... a circuit I had, running at about 25V, started to smoke. Oddly, it smoked in between traces! The only cause of it was the flux becoming conductive. No parts were damaged, and the circuit worked fine after a good cleaning. 🙂

  11. Phillip P George

    October 14, 2016 at 12:20 pm

    Ver y informative article.Thank you for publishing the same.


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