| Electronics > Repair |
| Need help to identify burned smd component |
| << < (3/6) > >> |
| unseenninja:
LOL, I missed the "tennis ball machine" part of the story! Thankfully, this doesn't seem like an application where leakage is critical. |
| Alex_ulli:
Yes, maybe that was the reason. Q41 and Q42 are driving the bottom motor for the balls. It feels and looks good right now, but maybe some ball stuck while somebody from the family was using it. So since the machine is already broken anyway - I will try to guess what to put instead of this Q10. If anybody can make a suggestion - I will have a shot. Right now I ordered this one https://www.ebay.com/itm/134450995007 |
| fzabkar:
--- Quote from: Alex_ulli on October 31, 2024, 06:30:44 pm ---Yes, I didn't notice that they are probably burned, thank you. At least they have some heat damage. But that's easy - I can read marking on them. --- End quote --- STL56N3LLH5 https://www.st.com/resource/en/datasheet/stl56n3llh5.pdf |
| picburner:
--- Quote from: Alex_ulli on October 31, 2024, 07:28:11 pm ---I will have a shot. Right now I ordered this one https://www.ebay.com/itm/134450995007 --- End quote --- IFR7404 has a Vdss of -20V, a too narrow margin for a 18V battery supply. I suggest you look for a device with 30V Vdss like the rest of the power mosfets mounted on your board. |
| pcprogrammer:
And one that can handle a lot more current. The STL56N3LLH5 can handle 56A. This does not mean that this current is actually flowing, but they did choose these MOSFET's for a reason. The Vishay SI4497DY-T1-GE3 might be a better match. https://www.vishay.com/docs/65748/si4497dy.pdf |
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