Hello,
I have a specific problem I’m struggling with. I have a Nintendo Switch that was working perfectly except for the charging port. So I decided to replace it, something I often do without difficulty, but now I’m left with a brick that won’t turn on.
I’m getting a voltage of 12V or 5V depending on the charger, and a current draw of around 0.73A, but it never boots.
I’ve replaced the BQ chip on the battery side, M91, and P13 without success.
I checked the voltage and it appears that the 5V is missing!
So I replaced the 8316 chip, checked if the surrounding diodes were faulty, and replaced the “K03” chip, which is getting 12V input but nothing output, but still no luck…
I admit I’m completely stumped, especially since the only thing I initially touched was the charging port!
I’ve recently started using Mechanic flux and low-temperature solder, and I suspect a problem with these products.
Could a RAM module be poorly soldered if flux got underneath it? Would the fault be consistent with this suspicion?
If not, do you have any suggestions on what I could check regarding this missing 5V?
Thank you 