An AC control Board Restored Back to Life
An AC technician who is a good customer and a dear friend of mine brought this board for repair. As the technician explained the problem I came to understand that the board is working fine but the air compressor is not coming one for some reason.
As you can see, it was all dusty and needed some TLC (tender Loving care) and that is exactly what I did.
I gave it a good clean and then I started looking for the fault on that board.
And as I checked across the board with my naked eye, I saw this fault; One Zener Diode was rusty, and a loose part that I could not figure out why till later.
The Zener diode and the diode were testing ok but because they were rusty, I replaced them and went on to check the part next to them.
This part was blown to pieces and the number on it was not found. I had to do some checking to find out what that part is.
As I called the technician, he informed me of good news that he has a working board just like that and he was willing to bring it over so I can find out what the part number of this component.
This is the location of the part on that board. The information found on the opposite side of this board, it gave me some information about this part. I believe it was a thermistor and when the guy brought the working board to my shop, the part was confirmed. It was Thermistor with 102 numbers on it. I could not find the same number but the closest was 104. I soldered on board and gave it to the technician to install it and check it out.
The next morning, the technician called and confirmed all went well and the AC is up and running. He informed me also with good news; he found a used AC unit for cheap price and he is coming today to install it in my shop.
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: