Try contacting the store you bought the camera from and ask about a warranty. They may give you a discount on repair.
There are many options for adapters. You can try and see if a different adapter will take the pressure off.
If you have exhausted all other options, you can VOID YOUR WARRANTY and take the camera apart.
Tear down guide:
Verify you have SleepDelay
and offDelay set up
If using USB API, check out this:
This person has had the timelapse running for 1 month non-stop unattended operation