Left JoyCon will not charge or connect to the switch

Question

Nintendo Switch

The Nintendo Switch is a handheld game console that can be played on the TV via a docking station, or on the go. Released March 3rd, 2017.

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Riverside Wren @riversidewren

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crwdns2931729:0crwdne2931729:0: Dzi 17, 2024

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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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crwdns2889612:0crwdne2889612:0 0

crwdns2944067:02crwdne2944067:0

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

crwdns2934271:0Dzi 18, 2024crwdnd2934271:0 Riverside Wren crwdne2934271:0

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?

crwdns2934271:0tiawara ta 2 agoMud 3, 2024crwdnd2934271:0 Riverside Wren crwdne2934271:0

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crwdns2933313:01crwdne2933313:0

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

score 1 · Answer 1 · 2024-04-17T03:29:53-07:00

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koppie007 @dan0

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crwdns2931729:0crwdne2931729:0: Dzi 17, 2024

crwdns2933897:0crwdne2933897:0

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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crwdns2944067:04crwdne2944067:0:

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?

crwdns2934271:0Dzi 17, 2024crwdnd2934271:0 Riverside Wren crwdne2934271:0

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.

crwdns2934271:0Dzi 17, 2024crwdnd2934271:0 koppie007 crwdne2934271:0

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.

crwdns2934271:0Dzi 18, 2024crwdnd2934271:0 Riverside Wren crwdne2934271:0

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

crwdns2934271:0Dzi 19, 2024crwdnd2934271:0 koppie007 crwdne2934271:0

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Nintendo Switch

Left JoyCon will not charge or connect to the switch

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