Left JoyCon will not charge or connect to the switch

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Nintendo Switch

Nintendo Switchは、ドッキングステーションを介してテレビで遊んだり、外出先で遊んだりできる携帯型ゲーム機です。2017年3月3日に発売されました。

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Riverside Wren @riversidewren

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投稿日: 2024年4月17日

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Left JoyCon will not charge or connect to the switch

Hello,

my left JoyCon won't connect to the switch or charge on the switch or an external charger anymore.

Here's what I already tried:

My switch works with a different left joycon, so it's not the switch.
It worked in wireless mode until the battery died because I couldn't charge it anymore.
I tested every button in test mode, they all worked.
I triple checked the flat band connectors.
I cleaned the rail connectors with a toothbrush and isopropanol while turned off.
I exchanged the rail of the JoyCon.

Is there anything else to check? What would be the next step? Exchange the bord of the JoyCon?

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I think this in my originial post covers it: "My switch works with a different left joycon, so it's not the switch."

Riverside Wren さんによる2024年4月18日

A new board didn't fix it. Since by now also the battery is dead I can't tell if the new board works at all or if the problem is somewhere else.

Any ideas?

Riverside Wren さんによる2日前2024年5月3日

Hi! So you tried a new motherboard, but now there is no sign of life at all? If this is the case, you may have received a faulty motherboard. Better return it and get a new board! Please also make sure that all cable are connected.

koppie007 さんによる昨日2024年5月3日

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I think this in my originial post covers it: "My switch works with a different left joycon, so it's not the switch." — Riverside Wren
A new board didn't fix it. Since by now also the battery is dead I can't tell if the new board works at all or if the problem is somewhere else.

Any ideas? — Riverside Wren
Hi! So you tried a new motherboard, but now there is no sign of life at all? If this is the case, you may have received a faulty motherboard. Better return it and get a new board! Please also make sure that all cable are connected. — koppie007

koppie007 @dan0 評価: 11.9千 20 11 19 · Answer 1 · 2024-04-17T03:29:53-07:00

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koppie007 @dan0

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投稿日: 2024年4月17日

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Hi Wren!

So, you already tried to replace the Rail of the JoyCon it self, right?

Then I think the next step is to replace the battery, as the battery does not want to charge.

If this failed as well, we probably need to check the motherboard.

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Yes, I already replaced the Rail of the JoyCon. Does the battery replacement make sense when it also didn't connect in handheld mode while the battery was still charged?

Riverside Wren さんによる2024年4月17日

Could still be battery related in weird circumstances... I would try it first. If the replacement battery does not work, return it and get a refund. Then it must be motherboard related.

koppie007 さんによる2024年4月17日

I switched the batteries between left and right JoyCon and the left one still doesn't connect but the right one charges. I'll order a new board then.

Riverside Wren さんによる2024年4月18日

If the Joy-Con is having the exact same issue on another Switch, then this is probably the only part left which can cause it. Please let us know if a new board fixed it! Thanks

koppie007 さんによる2024年4月19日

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Nintendo Switch

Left JoyCon will not charge or connect to the switch

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