Hey guys, I have a rare sony mex 5di car stereo and got the remote control for it over a year ago and it was quite expensive--like $75. I'm guessing it is an infrared remote control and the model number is rm-x141.

A few days ago, some of the buttons on the remote simply began to not work. I can still use most of the buttons but since this stereo only has a couple buttons on the stereo itself, it so happens that the buttons that stopped working are the ones I need most; the menu and audio buttons.

Can anybody help with this? Is there any way to troubleshoot it or try to repair it? Again, this is an expensive remote and can't really afford to get a new one again. Thanks.