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How To Repair A Dead Air Condition Circuit Board
An air condition technician brought this
board to my shop for repair. He usually comes into my shop and start to explain
the problem. He has a high tone of voice and the whole area could hear him
talking about that board. Anyways, he is a good guy and he always brings tones
of things to fix. Check out the board.
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This is the second board I have
repaired that comes from the same air condition model. This has a different
problem and with that comes different repair techniques. This board was dead.
Plug in power and I could hear a
faint click of a relay clicking but nothing happens. The lights on the board
come on but flickering and when I checked the board that has all the LED
lights, look what I found.
It was dirty and corroded and later
on I found out that water came on that board and was not cleaned. I have to
clean that board and re solder all the soldering joints. I plugged it in power
and all the light come on and steady this time. That is a one step further to
fixing this board. Here is the board from the other side
Now that I am done with this board,
my focus shifted to the main board. As I said before, I could hear a relay
clicking but nothing is happening. I started checking for water damage on that
board and I found something. Look at this
It was a 3.15 fuse and it was intact
but I went the extra mile and replaced that fuse. I also cleaned the fuse
holder on that board. I am pretty sure that was not the issue with this board
because it was doing its job in delivering power.
Look at this dirty fuse holder. It
was nasty and corroded. I replaced that holder with a brand new one.
