Mcbazel Replacement SL SR Left Right Sync Button Ribbon Flex Cable Set for NS Switch NS Joy-Con Controller Repair Spare Parts (NOT for Switch 2)

If the light doesn’t turn on, then the ribbon cable on the inside is broken, I’ve had this exact problem. They’re really cheap and easy to repair. Just replace the SL or SR (depending which joy con, but in the case SR)This is the exact one I purchased about a year ago, the only difference is the lights being slightly dimmer https://a.co/d/0dJDS4lz