Hello. Thank you for coming to JustAnswer.
Sorry for the delay and thank you for your patience. My name is Michael. I will be helping you with your question today. Please let me know if there as any additional information that you feel might be pertinent to your question. If I don't hear back from you, I'll provide the best answer I can based on the information you've given so far. You will still be able to reply with additional information or questions at any point during our conversation, and I'll revise the my answer accordingly.
Your best bet is going to be to replace it yourself if you don't mind doing it. You can get the part pretty easily - if you send it to canon, it will cost you a pretty penny. If you aren't comfortable doing it yourself, you might want to order the part and then bring that to a local repair shop so they don't charge you for trying to find it (or worse, not find it). Here's a link to where you can get one.
Of course, I just saw that it's not in stock there. But that is the part. You could probably just print that out and bring it to a repair shop and they can get it for you.
Let me know if you have any questions.