1. Maintenance of damp faults
Once the gamepad is damp or accidentally dropped into the water, it will cause leakage or short circuit between the lines, which will change the working parameters of the circuit and even burn the internal chip. In this case, first use a hygroscopic material (such as toilet paper, etc.) to absorb the moisture on the surface of the circuit board. Then, wipe the printed circuit board clean with absolute alcohol. Finally, it can be air-dried naturally, or the circuit board can be blow-dried with a hair dryer. When using a hair dryer, you can use either a hot windshield or a cold windshield. When using the hot air shield, keep the circuit board away from the hair dryer to prevent the high temperature from baking the parts on the circuit board. When using a cold windshield, the drying time is relatively longer, but it is more beneficial to the safety of components and circuit boards.
2. Overhaul of collision failure
Electronic circuit boards are not only afraid of tides, but also severe vibrations. It is not rare that game controllers fall on the ground or collide with hard objects such as table corners due to accidents. The electronic circuit in the game controller is mainly composed of an integrated circuit, a peripheral resistance-capacitance component and a crystal oscillator (crystal oscillator for short). Among these components, crystal oscillators are most afraid of vibration. If the handle is dropped on the ground or hits the wall, the transistor and integrated circuit may be intact, but the crystal oscillator is often damaged. When the above-mentioned similar situation occurs, just replace the crystal oscillator with the same parameter again. If the fault is still not eliminated, check whether there is false soldering or desoldering in the circuit, and whether the transistor is damaged, but generally do not replace the integrated circuit easily.
3. Overhaul of some key failures
The buttons of the game handle are generally made of conductive rubber, and the lower surface of the buttons is evenly coated with conductive carbon material. When a key is pressed, the conductive layer on the lower surface of the key contacts with the copper skin on the printed circuit board, so that the circuit is turned on. However, this layer of conductive material is very thin, and it is easy to fall off after long-term use and cause poor contact or short circuit.
To eliminate this fault, first clean the circuit board and the bottom surface of the keys with alcohol; then repair the conductive layer on the bottom surface of the keys. There are generally two ways to repair the rubber conductive layer of the button:
a. Coat a layer of 502 glue and 4B pencil powder mixture evenly on the bottom surface of the button, and dry it for use;
b. Use 502 glue to stick a thin aluminum film or other conductive material on the bottom surface of the key, so that the bright side of the metal faces downward. The aluminum film material can be the inner wrapping paper of cigarettes or chewing gum. This method is widely applicable and can be used to repair the keys of calculators, telephones, remote controls, etc.
