I had one replaced couple of years back in a shoe repair shop on pattaya Tai, opposite side of Friendship supermarket, around the same placem, maybe a bit either way,
I think this was the place (the one with key and shoe pics on the signs)
https://www.google.com/maps/@12.9239014,100.8805518,3a,75y,33.37h,90t/data=!3m6!1e1!3m4!1sisQBb9hnHEM5cw_sV_N1pQ!2e0!7i16384!8i8192