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Hey! I checked every track on both boards and all were good. Then I saw that hour meter is connected with a few hair of wire. I did not try to turn dehumidifier on before I made a good connection. Plugged in and it started to work. I disconnected hour meter to see if that was a problem - no, it...
Hi. So, I managed to check every track on small board and all had 0 ohms. I probably should do it for large board as well? If microcontroller has supply and ON button is working, why wont it turn on (small board)..
Didnt have much time on this today. So, controller "gets" around 2.6V supply, datasheet says its needs 1.8V to run. I guess that when its plugged in 230V, it beeps, it means controller is supplied. There is a small IC on control board and it has no code on it, I guess it communicates with main...
Hello. Thanks for your time and input :)
Its cold in my garage, so I spend a little time for this. This is how far I got. Small board receives 5V, that goes to small chip and 5V is on empty pin. Button is connected to controller`s (SN8F27E64KB) one pin. 2 button pins (of 4) have 0 ohms to...
Hello again. Thank you for your input :)
So, when I plug it in, it beeps once. I think it did that previously too. No LED light or numbers on panel work. None of buttons do anything. As I can remember, display should go on when ON button is pressed. Some more pictures here. I tested power...
Hello. Maybe someone here could help me troubleshooting. This is a control of a dehumidifier. So, if machine is plugged in 230V, speaker on board makes a beep and It wont turn on, nothing works. I tested power regulator (third picture), its 7805C, input 18V, output 5V, fourth picture is...
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