Jan, I have the 9i's and don't have that problem.

Maybe try the simple thing first.  Swap out the 3.5mm cable.  Sometimes the machining on cable termination prevents the jack from seating all the way.  You'll get a right or left channel signal only if that's the case.

Hello,

Thank you for a swift answer.

I have tried two other B&O cables and it does not change anything.

It cannot be pushed any further in and the seating seems ok and the socket is clean and from the inside I can see that the socket is not broken.

I suspect some electronic broken parts.

As the BT is working it has to be in the process from the decode from inlet to sound generation.

The player has been tested with another pair of H9i and the equipment and cable works OK.

Hi Jan, hope this note finds you well! I recently have encountered the same issue with my H9i - no sound in the left headphone will cabled, but works fine on Bluetooth.

We you able to find a resolution to the issue?

Kind regards,

Randal

I gave up and sold the headset cheap.

Later I learned that it could be an electronic fault, but was not able to test.

It has also a potential to be an error in the physical wiring inside.

/Jan  

I once found that a cable gave sound in only one ear, then when I 'flipped' it the other way round - it worked on both ears!

Apparently they were directional?

Lee