I got defeated, I resign I have lost my patience and I need to buy a new sanguinololu. I thought it wouldn't be that hard to fix but I cannot make it work whatever I try and it makes me so mad... I am sorry to disappoint and thank you so much for everything you tried to do to help.by Ebdac - Sanguino(lolu)
I removed capacitors now and they seem to work. When all capacitors were desoldered it still shuts off the PS. You know after all this I am not sure of anything right now... I will take another PS apart and test it because this is getting ridiculous.by Ebdac - Sanguino(lolu)
I am losing my mind over this... I found some ways to check if the capacitor is working (I don't have a multimeter with capacitance measurements) but it's really hard to interpret for me (I am using the resistance mode), sometimes the numbers show multiple times when I measure and sometimes they don't show at all... i checked with capacitors soldered onto my board (both 1000uF and 100uF), anywaby Ebdac - Sanguino(lolu)
I have not before, but when turning it on with USB connected there is no hissing but the PS turns off again. I didn't notice that I should cut the traces, I understand from this picture that I should cut both traces marked? With a sharp knife will be sufficient? And yes, with ATmega removed, the hissing is still there.by Ebdac - Sanguino(lolu)
Ok so I removed all stepsticks and basically everything from the board and what happened is the moment I turned the PS on, I heard a hissing sound so I disconnected it immediately because hissing electronics cannot be a good thing... The light on the board didn't turn on. I attached photos of my board.by Ebdac - Sanguino(lolu)
My lack of knowledge is making this so hard to fix... My printer was working for over a year until this happened so I don't think that board fault would come up after so much time? I have bought 2 new regulators but I'm suspecting I bought wrong ones... I bought LM7805CT and they don't work for me for some reason, are they wrong? On my board I have L7805CV but couldn't find exactly that in storby Ebdac - Sanguino(lolu)
Ok so let me clear some things. So again nothing works as in the beginning. I thought mosfet was the same as the regulator You mentioned, which is obviously stupid. Consider I have at all times the USB cable disconnected. My 12V power supply has a light, when its just connected to the socket it glows orange, when I flip the switch in between power supply and the board (with board disconnected)by Ebdac - Sanguino(lolu)
Do you mean this pin? There is nothing there. Now something strange happened, when I was trying to check the voltage on the pins the board came to live when the switch is on the off position... I have no idea what happened. I am scared something will break like this...by Ebdac - Sanguino(lolu)
I checked the mosfet according to this video And it works exactly as shown in the video... Of course what I meant in the beginning is that the board doesn't take the power from the AC no matter the fact USB is connected or not.by Ebdac - Sanguino(lolu)
Thank you for your answer. To be fair I am completely unexperienced when it comes to such electronics so it's pretty difficult for me to repair. I will try to check if my mosfets work and will update soon.by Ebdac - Sanguino(lolu)
Hello, I have a problem with my Sanguinololu 1.3a based printer. It seems to not take power from the power supply for some reason. It takes power from usb just fine and everything lights up but as soon as I plug in the power supply everything goes dark and nothing works. I wanted to reroute the power to make it go through wires instead of the board pathways (I suspect conductivity problems on theby Ebdac - Sanguino(lolu)