03/16/2023
This one was truly a diamond in the rough. Brought in a Switch console where buyer stated that it, "turned on, but the power button didn't work." π€ When I started testing, sure enough the power button didn't work, but I could get it to turn on when plugged in with the original charging cable. I opened it up and saw some liquid damage around the power button connector, so I cleaned it up with some isopropyl alcohol and the power button started working! Easy peasy, right? If only ...
Once the power button issue was fixed, I went to turn the console OFF and the fan started blowing at full power! The console was completely powered down, no overheating or anything, and the fan just continued blowing until I turned the console ON again. No matter what I tried, the fan kept doing this every time I shut down the Switch. I was baffled!
So what does any technician do when they can't figure something out? Ask Google π And for the first time in my life, Google failed meπ± Across the entire internet, I only found 2 forums where someone had reported this problem, and NOBODY HAD EVER FOUND THE SOLUTION! At this point, I was determined to be the first. Challenge accepted ...
There were no obvious short-circuits on the board, so I resorted to a voltage trace to see where the fan was getting power from when the console was in shutdown mode. After a couple hours of effort, I finally found a tiny BGA chip on the back side of the board where one of its capacitors was showing the same 5 volt reading I found on the fan connector. On a hunch, I pulled the chip and replaced it with the same part from one of my donor boards, and voila! The fan was back to normal!! I LOVE a good challenge, and I was happy to contribute this knowledge to the internet for other techs to use in the future.
Are you facing a challenging problem with your Nintendo Switch? Send me a message, and let's get it fixed!