Hello, it is my first post here.
Unfortunately I have done something very stupid. I made a DC battery for the board, but i did not have the correct 4 pin connector, so i used protoboard jumpers, but they did not fit properly and i got the hood off of 2. When i was unplugging the battery i did not get all 4 at the same time and bad thing happened, i saw a small spark and i think the positive and negative touched... yeah =/
This is embarrassing to say the least.
My model is Alpha 800, since this happened no led lighten up when i connect the usb c power.
Anybody know how i could fix this? Maybe replace the integrated circuit responsible for power, really anything at this point is welcome
[Help] I short circuited my board
Update:
Doing some tests I figured out which part was damaged, it was a small chip that used to be on the red circle
:
We removed it from the board and did not find any other component heating up with power on.
I suppose it is some sort of voltage regulator, I could no quite read properly the letters are too small, but I think it was written "DDJ 381" on it. Does somebody have the datasheet of this chip? Can i order one for replacement or find another chip that does the same function?
Doing some tests I figured out which part was damaged, it was a small chip that used to be on the red circle
:We removed it from the board and did not find any other component heating up with power on.
I suppose it is some sort of voltage regulator, I could no quite read properly the letters are too small, but I think it was written "DDJ 381" on it. Does somebody have the datasheet of this chip? Can i order one for replacement or find another chip that does the same function?
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LattePanda
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That 6 pin IC (SMD marking DDJ 381) seems to be some sort of MOSFET.
Please check the PCB pattern (3 tied together on one side, 2 tied the other side, and one pin for Gate.)
Check voltage relative to GND. If it is positive on either the S or D lead, then it's P-ch MOSEFET, most likely for power path control function.
Don't hold me on this, just a guessing.
Also note, short-circuit further downstream will cause this MOSFET to burn out. So the issue may not be just this.
Please check the PCB pattern (3 tied together on one side, 2 tied the other side, and one pin for Gate.)
Check voltage relative to GND. If it is positive on either the S or D lead, then it's P-ch MOSEFET, most likely for power path control function.
Don't hold me on this, just a guessing.
Also note, short-circuit further downstream will cause this MOSFET to burn out. So the issue may not be just this.