Joycons will not connect

[zealous vapor]

I have has this problem with my switch for a while that the will not connect I always just take them on and off but now they will not see each other at all

Look at the bottom right of thescreen

[velvet condor]

Probably joycon's rail's connectors issue. Check below and attempt cleaning.

[lilac thunder]

rail

FIX HANDHELD JOY-CON DISCONNECTING ISSUE

• Basic Troubleshooting
･ Make sure the Joy-Con is on by observing the LED lights on the rail.
･ After that, slide it into the Switch.
･ If there is a response on the screen, or a click sound, it means the rail is still working.
･ Go through Nintendo's trouble-shooting guide.
･ Remove all controllers pairing using this procedure.
･ Process to the cleaning instructions below if your Joy-con still have issue.

👉 Click here for cleaning instructions

§ If cleaning didn't work, you may need to repair the rail.

• DIY guides:
･ Tablet's right rail
･ Tablet's left rail (Very hard)
･ Joy-con's left rail
･ Joy-con's right rail is similar to the above.
･ Rail's button flex board: Left & Right

• Parts:
･ Console's slider rails
･ Joycon's slider rail
･ Joycon's rail's buttons flex board

Requested by BladeSpringSun#4133

[zealous vapor]

Is it the rail for the switch or the rail for the controller?

[velvet condor]

Clean both. They are working together in tandem.

[zealous vapor]

Is it hard to replace the rail for the joycon left?

[velvet condor]

Well there's already guide in the tag, you can just look at it and judge for yourself.

[zealous vapor]

It is the console rail how hard is it to replace?

[velvet condor]

You want me to repeat myself? 😅