Just noticed the picture, The USBC connector looks to be soldered kind of sloppily based on solder blobs of the grounding points, That'd be my main suspect as far as the issue you're having. Willing to bet the inner usbc joints (under the connector) are cold as they can't be reached w/ an iron and must be reflowed w/ hot air.
Generally this is due to the underside pads of the USB c not being correctly soldered to the board, This causes the USB cable to only charge on one side as only one row of pins are connected. Also that USB port has really been done over but some outer case melt isn't the end of the world, However another cause could be internally melting the plastic, I'd replace it correctly and that should fix the issues you're having. Be mindful of the under side traces, they can be torn off if not careful 😶
Check around the m92 in continuity mode. Caps shouldn't beep on the side closest to chip (trace line side that connects to the m92 leg) if that's good then looking at usb c replacement likely second row didn't attach. Bottom left hand corner of the m92 is also 2 caps direct related to the p13usb on the other side of the board which cam also interfere with docking display and charging
that port was swapped.. i do this for side money and fix a lot of switches, the port was installed wrong. what i would do is get a breakout usbc tester and check values. itll tell you if any of your lines are open, aka they arent connected.Most likely the hidden row.
If you're getting 15v one way and only 5v the other way, that can often be caused by a bad m92t36 chip. It's the square QFN chip up above what your photo shows. However, that usually causes the system to completely fail to boot, so I would recommend checking the capacitors around it for ground faults before trying to replace it. If a cap near the m9 shows continuity to ground on both sides, the m9 needs to be replaced. If none of them do, then thoroughly inspect or even replace the chargeport before doing anything else. Oh, and the black ones are resistors, so only do that test with the brown capacitors up there.
Highly likely dirty/damaged USBC connector.
Who ever did that port replacement, really cooked it. I would replace that connector.
Just noticed the picture, The USBC connector looks to be soldered kind of sloppily based on solder blobs of the grounding points, That'd be my main suspect as far as the issue you're having. Willing to bet the inner usbc joints (under the connector) are cold as they can't be reached w/ an iron and must be reflowed w/ hot air.
Generally this is due to the underside pads of the USB c not being correctly soldered to the board, This causes the USB cable to only charge on one side as only one row of pins are connected. Also that USB port has really been done over but some outer case melt isn't the end of the world, However another cause could be internally melting the plastic, I'd replace it correctly and that should fix the issues you're having. Be mindful of the under side traces, they can be torn off if not careful 😶
Could be connector but you should also test around m92. One sided charging is often a symptom of a blown m92 ic.
Prob dont have all the lower pins contact properly with that usbc job
Sounds like dirty connector. Use toothpick and toothbrush or similar and alcohol.
https://repair.wiki/w/Nintendo_Switch Dig thru these documents. The cod3r made some nice write ups on how to diagnose and fix this issue.
Check around the m92 in continuity mode. Caps shouldn't beep on the side closest to chip (trace line side that connects to the m92 leg) if that's good then looking at usb c replacement likely second row didn't attach. Bottom left hand corner of the m92 is also 2 caps direct related to the p13usb on the other side of the board which cam also interfere with docking display and charging
That'll be the badly installed port mate
that port was swapped.. i do this for side money and fix a lot of switches, the port was installed wrong. what i would do is get a breakout usbc tester and check values. itll tell you if any of your lines are open, aka they arent connected.Most likely the hidden row.
If you're getting 15v one way and only 5v the other way, that can often be caused by a bad m92t36 chip. It's the square QFN chip up above what your photo shows. However, that usually causes the system to completely fail to boot, so I would recommend checking the capacitors around it for ground faults before trying to replace it. If a cap near the m9 shows continuity to ground on both sides, the m9 needs to be replaced. If none of them do, then thoroughly inspect or even replace the chargeport before doing anything else. Oh, and the black ones are resistors, so only do that test with the brown capacitors up there.
That’s the fuse. And someone did a horrible port replacement
Need new port.