It is inevitable that a catastrophe of epic proportions happens to a piece of electronic equipment. Attempting to make the repairs yourself is often a really bad idea. Not only does it completely invalidate any warranty you might have, you often wind up throwing the equipment away and then shelling out the dollars for a new one. In many cases, it is easier and less stressful to let the professionals deal with the complex repairs.
You know when you are in over your head if the electronic device breaks into pieces. This is more than just the battery case popping off the back. When you can see the circuit board or fractured wires then the repair is probably beyond just putting it back together and hoping it works. In this particular case and depending on the warranty, it might just be cheaper to see if it can be replaced.
You also know when you are in over your head if the electronics have been submerged without being in the case. Homes with toddlers are especially vulnerable to this kind of damage. While attempts can be made to dry it out, it still may not work. This happens because something in the electronic equipment has shorted out. Even though the warranty might have been invalidated, it is virtually impossible to tell which part of the piece failed. A repair like this is only an exercise in frustration rather a successful attempt.
Electronic equipment is very fragile and life very dangerous to it. Knowing when you are over your head when it comes to repairing your equipment is important. Working on things yourself can invalidate your warranty and costs you extra to replace it. It is better safe than sorry when it comes to attempting home repair. It is much cheaper to let the experts handle it.