Broken 8 channel audio ?

[Lornedh]

 i have a sabertooth 990fx r2 mother board with a Creative® Inspire M5300 - 5.1 Channel Speaker System

 

 Today My auxiliary rear black cable's tip broke off inside my rear black auxiliary jack

 

 I used a metal skewer to try to get it out finally i used a ink cartridge from a pen to get it out

 i used a dab of glue to glue the tip back on the black auxiliary jack

 

after a hour or 2 of drying i plugged in my 5.1 audio cables into my 8 channel rear audio ports and all my speakers work except the rear left one my rear right one works fine i switched the speakers to see if it was them but it wasn't.

 

Do you think my audio port on my mother board is broken from me trying to get the tip out cause only one rear speaker is getting sound the other rear speaker works fine and it uses the same black optical port 

 

or do you think its just the speakers since the rear optical tip broke off and i had to glue it back on the tip fell off again and i plugged it in with the tip missing off the black rear audio cable with the same results 

 

im worried which part is broken hopefully its the speakers

 

i dont know what exactly the tip is for on a 3,5m jack could be breaking it off and super gluing it back on create the issue of not receiving rear left channel audio  or is my rear 8 channel audio port broken on my motherboard from trying to get the piece out ?