Toshiba A10 Stereo Amp only playing mono.

[bendib2003]

The problem occured when the AUX was pulled out while music was playing, it will only play on one speaker now and I've swapped L and R and then the other speaker plays only mono, I've checked my computer if it was set to mono but is set to stereo and when I play the test sound both L and R is played on one of the speakers. (Whichever is connected to R on the amp) No matter which AUX end (L or R) is connected, it will still play on the same speaker. There is no button to switch between mono and stereo on the amp. Please help.

 

[bendib2003]

this is a duplicate post of another thread I made, I would appreciate it if I could get all the replies gathered in one place, so please find the other post which is named the same and contains the same text.