Hi thanks for that info. This is a defective button switch, the spring inside the switch has failed.
The best way to have this fixed is by taking this one to Best Buy or Sears for this, as they are less expensive than a camera repair shop.
Also, they do hight quality workmanship and they are fair price wise.
This isn't something you fix unless you have specialized tools for this model, also its super easy to break the tiny ribbon cable inside when you open the case. But if you do want to make this repair yourself I will assist you all the way, please let me know on that, you will need to be good with soldering and be well mechanically inclined.
I wish I had better news for you but this one is not very expensive to have repaired at all ;-)
I will stick with you in any case, but please rate kindly before you close this page, no additional cost for that.
Thank you and have a great weekend!
Tech Mike ;-)