A door power controller board repaired
A guy from next door brought this board for repair. It was a door controller board and it seems like other technician was trying to fix it.
It looks fine from this side but when I looked on the other side of this board, I saw a big mess.
Take a look
Some of the soldering areas were missing and it was not connected right on board.
If you look closely to IC there, you will see a loose line and I think that was causing the malfunction on this board. The board was responding to the remote control signals which indicate that the remote control board was operational. The main problem was the 220 AC volts to operate the motor that opens the door were missing on both directions.
I reconnected the missing line back to the pin of the IC on that board and then I have to connect another missing line connecting the two relays together.
I made a bridge from one of the relay pins connecting it to the other pin of the relay. The pin on the right side of that bridge is the connection to the IC. I connected it with a very thin wire wrapping it around the pin of that relay.
As you can see, left direction was getting the 226 AC volts.
Here you can see the right direction was getting the 226 AC voltages.
Mission accomplished.
This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.
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Note: You can check his previous repair articles in the link below:
https://www.electronicsrepairfaq.com/car-alarm-remote-control-with-display-flickering
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Jestine Yong works as an Electronics Repair Lecturer in Kuala Lumpur Malaysia and his training website is http://www.NoahtechElectronicsTraining.com. You can check out his repair blog at http://www.JestineYong.com
10 comments on “A door power controller board repaired”
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Well done! The other technician that was trying to fix the dooropener board probably only installs those boards into buildings like an electrician without having any knowledge about electronics.
Albert: according to the customer, the door controller was fine and the main fault was the motor. the door controller was sent to be checked but the technician messed it up. once the door motor was fixed and installed the messed up controller by the technician, it was brought to me and I saw the mess that the other technician have created.
It must have been a badly trained technician without basic knowledge on how to solder or how to repair electronics. He probably would have made it worse if you had not been there to step in and fix his work.
Albert: very true and also the knowledge to test the board before doing any work on it. when I get a board for repair, the customer does not tell you the whole thing so testing the board before doing anything on it is vital to the repair. many times, I got a board for repair that does not need fixing. and testing it will spare me a lot of time and money working on it.
That’s a very interestingly ingenuous fix!
Parasuraman: what you mean? I do not get your comment
Tnx so much mr waleed you for the confidence that you gave ,may God bless you
ThandoSebeneleMavimbela: you are most welcome.
It was a good job indeed
Joseph: thank you very much. have a blessed day