The screen doesn't respond after keyboard keys

The individual keys of the keyboard can bounce back normally when pressed, but there is no corresponding character display on the screen.

This situation if the other keys are normal, indicating the keyboard line is not a problem, generally have the following two reasons. First, the keyboard on the circuit board contacts indicate that there is dirt, resulting in contact between the film and electric shock, the key failure. Second, a very thin spring in the key body tension is insufficient or deformation, resulting in poor contact.

The first problem caused by the failure, you can clean up the dirt, and then use the anhydrous alcohol will indicate that the clean can. The second cause of the fault, on some trouble, the keyboard back cover open, remove the circuit board, will fault spot welding live. In this case, if there is a new key body, you can directly change, but the individual key body is generally not good to buy.

If you want to maintain the fitness, first carefully open the key body, the thin spring piece gently out, take anhydrous alcohol for cleaning, less touch some lubricating oil, restore elasticity and then put back. Confirm the body will be repaired after the seal, and then put the keyboard back, with soldering iron, reinstall well, the fault can be ruled out.