Repair audio jack cable

iMac intel 21.5 EMC 25444 the audio cable jack is loose to rear of unit not able to push in audio cable for head set, my understanding it fits to the lower part of the main board with a cable - push clip socket, but can not see this in any tear down - video just shows the main board being removed next to the side speaker. Not sure if its soft welded or screw fix as the older iMac 21.5. Any one who has repaired can they please advice.