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发布于2017年3月3日,任天堂 Switch 是一款可以在电视和路上玩的掌机。

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Need help identifying a capacitor

Hello,

I got my day one switch broken because of a malfunctioning charger.

when I plugged the charger I got an error similar to this one https://imgur.com/SDzL2ea

I did not capture it, but after that the switch would not start anymore.

After plugin the original charger, the switch can still charge the battery (I saw the battery voltage increase), but swill won't power on, event after hard reset, etc..

It will not enter rcm as well so I'd say the cpu doesn't start.

I did test all visible capacitors for shorts and only found one with both side grounded.

Block Image

I can try replacing this capacitor but I need help to find its value.

Any idea on what other thing I should check would be appreciated.

Thanks!

Update (07/03/2022)

Here is another highres image of the board

Block Image

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have you checked to see if its grounded?

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It is indeed grounded (both side). Now I know it is a ferrite bead, does it matter?

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This is a ferrite bead not a capacitor. It is used to filter out high frequency noise and it is meant to have a very low resistance and once it fails it tends to actually be an open circuit.

As for diagnosis attempt you would have to show some more detailed images and give us some voltage readings.

Good luck !

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Hello,

Thanks for the hint! (facepalm)

From visual inspection I don't see anything suspicous I can show you.

Where should I start about the voltages?

I found one check on the pin 5 of M92T36 and found 3.2V

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@Pierre Tardy M92T36 is a charging IC and as stated above we already know it charges.

Audio/video power ic could be a place to look as well.

From what I see the switch has not been taken fully apart so I would start by taking the board out and actually taking a good look at it, see if there is any blown components or discolorations

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