Can anyone tell me if something's wrong with this soldering?
I had the RTL8723BU chip soldered by a friend, but neither of us have experience in microelectronics.
At first the chip just didn't work, not showing any wifi net etcetera (I didn't try the bluetooth features yet).
Then the speaker kept cackling to the point it started to make a hissing sound, and I started to notice a vague burning smell lol. I turned off the console and extracted the battery asap and apart from a weird deformation near the first soldering pin on the left I don't see anything weird (I already took out that string under the battery input).
Since it's not the usual smell of burnt electronics, I'm thinking we didn't clean the area enough and that might have disturbed the circuits, but if anyone with better understanding of electronics could take a look at the pictures I'd be very grateful!
Also, I read on this sub that some V21 versions of the console lack some capacitors needed by the chip to work. Mine is a V22 2024-12-18 (picture of the full board included), might that be the case?