Yashica T4 Help!

I have had my Yashica T4 for a few months, all going great and then last week I was taking a photo and the shutter wouldn't release.
Its as if the lens extends a little to focus like normal but then nothing happens, the shutter doesn't open.
Has anyone had this problem before? Any solutions before I go crazy and have to find a good local camera repairer?
Any help thanks!
John

Did you try changing the battery? That's the first thing I'd check. If your battery doesn't have enough power it might be getting stuck and not have enough power to focus and release the shutter.