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Nintendo Switch When both Joycons are docked A Joycon disconnects Repair

From Repair Wiki
Nintendo Switch When both Joycons are docked A Joycon disconnects Repair
Device Nintendo Switch
Affects part(s) JoyCons
Needs equipment Screwdriver set, tweezers
Difficulty ◉◉◌◌ Medium
Type Part replacement


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Problem description

When both Joy-cons are docked into station, Left/Right Joy-con disconnects when giving input to the other Joy-con (when left Joy-con is given an input, Right Joy-con Disconnects).

Example image (Figure 1) -- No image yet. Help expand this page by uploading it!

Symptoms

  • Joy-con disconnects when giving input to the other Joy-con

Solution

Replace the side-rail of Joy-con that causes the disconnect issue (it may also be noted that the controller that causes the disconnect issue shows a connection icon at the bottom left that specifies that it is connected wireless though it is docked), this issue can also be caused by liquid damage in/on the connection point or on ribbon- Check for liquid first to see if an ISO-cleaning may fix the issue, then proceed to replace if no changes occurred.


https://gbatemp.net/threads/switch-will-not-recognize-that-joycon-is-attached-and-cannot-sync-new-joycons.545874/

https://web.archive.org/web/20210604235454/https://gbatemp.net/threads/switch-will-not-recognize-that-joycon-is-attached-and-cannot-sync-new-joycons.545874/