First you might want to double check that the jack is the problem, It could be your 2.5mm cable, or the cable connection to your iems? IF you have a 3.5mm cable or earphones, how do they sound through that Single ended jack? OK I hope? Can you get the earphones to make any sound out of the right by moving/wiggling the 2.5mm tip around from side to side? If it's just the Jack(slot), I would think that a good electronics repair shop there in Philippines could repair it for a very low cost. Sometimes jack can be fixed, sometimes just easier to replace the jack. Jacks don't normally go bad so fast. Either defecive/poor quality, or the jack was stressed somehow during use, or when in a pocket/pack with the jack still connected... Just some ideas.