My USB headset suddenly stopped playing audio in one ear. I moved the cable around to check whether the headset was damaged, but the problem continued. I also tried different headphones through the computer's audio jack, and they had the same issue. After resetting Windows and buying new IEMs, the problem is still present. I've reinstalled and updated the audio devices, checked the left/right balance, and run the built-in troubleshooter. The original headset also fails on another laptop. If I pull the new headphone plug out slightly, both sides briefly work, which makes me suspect the computer's jack may be dirty, damaged, or not making proper contact.
3 Answers
Also check that the plug and jack use compatible TRS or TRRS connections, especially if the IEMs have an inline microphone. An incompatible or partially inserted connector can cause one audio channel to disappear. Try the IEMs on another device and try a known-good pair of ordinary stereo headphones on this computer. If every pair behaves the same way on this computer, the jack or its wiring is the likely fault.
The old USB headset failing on another laptop points to a separate fault in that headset, while the new IEM issue points to the computer’s analog audio jack. A clean Windows reset would not fix a damaged port. Using a cheap external USB sound card is a practical workaround if repairing the jack is inconvenient.
The brief moment when both channels work after pulling the plug out slightly strongly suggests a physical connection problem with the 3.5 mm jack, not Windows or malware. The contacts inside the port may be dirty, bent, or worn out. Try gently cleaning the jack with compressed air and checking whether the plug is fully compatible with it. Avoid forcing anything into the port. If the problem remains, test with a USB audio adapter or Bluetooth headphones; if those work normally, the built-in jack likely needs repair or replacement.
That makes sense. Pulling the plug out slightly is the only way I can get both channels briefly, so I’ll test with a USB audio adapter and inspect or clean the jack.