Nintendo Switch not turning on

On a USB Ammeter it displays 0.46A and constantly stays there.

Opened up device and found battery was pretty much flat. Charged it up around 3.7-4.2V and attempted to turn it on with the battery connected once the battery was charged up externally at that voltage.

It still did not turn on and charger still reports 0.46A. No signs of liquid damage on board as inspected under microscope.

I would suspect charging chip but isn’t it supposed to turn on with a charged battery if that was the case and not charge?

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Unfortunately, this is one problem I've never found the fix for and I don't know of anyone that has. I don't think there is a fix for it at this point.

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I noticed that BQ24913 (Lower bottom left pins) and the cap next to it becomes shorted to ground when I plug the battery in so I may replace that chip and see how that goes.

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Did you use a 3rd party dock? I think that that still happens.

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I'm doing this for a client so I would have to ask them whether they did or not.

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