If the communication port is only surface burned out, you can try to use a wire brush and alcohol to clean and repair. If the communication port has been badly damaged, it needs to be replaced. First of all, you need to buy the corresponding communication port, and then replace it according to the manual or relevant technical information. After the replacement is complete, reinstall the touch screen, and perform corresponding testing and debugging to ensure that the communication port works normally.
Overvoltage: When the voltage exceeds the range of the chipWhen the chip may burn out. Overcurrent: When the current exceeds the chip's tolerance range, the chip may burn out. High temperature: When the operating temperature of the chip exceeds its tolerance range, the chip may burn out. Design defects: Poor chip design or defects in the manufacturing process can cause the chip to burn out.
Sometimes the current is too large, burning the inner screen. Solution Check, if the line is loose, change the line. If the inner screen is broken, directly change the screen assembly. If the screen is not changed, it is the motherboard's touch screen ic problem, the so-called touch screen ic is a chip that controls the touch screen, canChange, but the process requirements are very high, this is the chip level maintenance, the general store will not. You can only contact the after-sales center for maintenance.
1. RESET interface: When the controller is faulty, it can be reset to restart the controller. RST interface: The GT911 supports resetting via this interface using external hardware, either automatically or manually.
2, this chip interface is defined as follows: according to BoThe GT911 touch screen and the host interface have a total of 6 pins, which are VDD, GND, SCL, SDA, INT, RESET. The GT911 touch screen series uses standard I2C communication with the host, and the maximum rate can be supported up to 400KBPS.
3, use USB interface connection Connection method: Use a USB cable to connect the touch screen and the computer, the touch screen will automatically identify and connect to the computer.
4, through the FPC or BTB connector connection. Mobile phone screen can be divided into touch screen and display two kinds, touch screenFor feedback touch operations, the display is for real-world problems and images. Whether it is the touch screen or the display screen, it needs to pass the test before assembling the application. The shrapnel microneedle module has a stable connection function, which can transmit the current in the range of 1-50A. The overcurrent is stable, and the connection function is strong, which can make the mobile phone screen test stable.
5, power on First, power on the LCD monitor, and then use the data cable to connect to the VGA interface of the laptop. Check to see if the monitor has a switch, and if so, don't forget to turn it on! Light up the LCD Step two, light up the LCD! Large partThe notebook can be done by pressing the Fn F3 key combination.
6, V. According to the official data of mobile phone accessories, GT911 touch screen introduction This touch screen is a horizontal capacitive touch screen with a resolution of 1024*600. Its interface type is I2C, and the supply voltage and communication voltage are 3V.
1, the working principle of the touch switch IC is based on the principle of capacitive induction. When the finger touches the electrode on the touch switch IC, an electricity is formedThe size of this capacitor depends on the distance between the finger and the electrode and the area of the electrode. When a finger touches the electrode, touching the switch IC detects a change in this capacitance, triggering the switch to turn on or off.
2, any two conductive objects there is an induction capacitor, a key that is a pad and the earth can also form an induction capacitor, in the case of constant surrounding environment, the induction capacitance value is fixed and unchanged small value, when there is a human finger close to touch the key, The induction capacitance formed by the human finger and the earth in parallel with the induction capacitance formed by the welding pad and the earth will cause the total induction electricityThe capacity value increases.
3, touch chip underwater touch principle: touch button is realized by touch chip. According to the relevant public information, the principle of the touch chip is to cause the change of the input capacitance through the touch of the human finger, the input capacitance and the reference capacitance built in the touch chip compare the output differential signal, and then the amplifier circuit amplifies the output to get the high and low level, so as to achieve the simulation. 4, touch chip is an interactive device based on the principle of capacitance, widely used in a variety of electronic devices, such as smart phones, tablets, smart watches and so on. Through human contact,The touch chip will sense the capacitive changes in the human skin and convert them into signals, thus enabling the user to interact with the device. The application of touch chip has gradually expanded from the traditional control switch, key and other functions to include gesture recognition, fingerprint recognition and other interactive ways.
5, touch screen IC refers to the touch screen control chip, is a chip based on the principle of capacitive induction. It is mainly used to convert the capacitive signal generated by human contact on the touch screen, and convert it into a digital signal output to the processor, so as to realize the control of the touch screen. Touch screen ics can be used in various touch screen devices, such as smartMobile phones, tablets, industrial equipment, etc.
1, sound chip: HD Audio; RAID function: Supported.
2, Realtek R1000 (Realtek RTL8168, RTL811RTL8169 and RTL8101 chip Ethernet driver. Dual gigabit networks are also supported.) Realtek RTL8201CL (RealTEK RTL8201CL chip Ethernet driverIntroduction, Author: orByte) Realtek RTL8139 (Ethernet driver for Realtek RTL8139 chip, author: orByte.
3, Realtek 8201BL Realtek 8201BL is a common motherboard integrated network chip (also known as PHY network chip). PHY chip refers to the computing part of the network control chip is handled by the processor or Southbridge chip to simplify the line design, thereby reducing the cost. Realtek 8139C/D RealteThe k 8139C/D is one of the most used network cards.
4, the following is the current commonly used network card control chip. Realtek 8201BL is a common motherboard integrated networking chip (also known as PHY networking chip). PHY chip refers to the computing part of the network control chip is handled by the processor or Southbridge chip to simplify the line design, thereby reducing the cost. Realtek 8139C/D: One of the most used network cards today. The 8139D mainly adds power management functions, and the rest is basically the same as the 8139C chip.The sensitivity capacitance of the chip ranges from 1nF to 47nF. The sensitivity of the key is generally best from the contact movement of the entire finger area. The sensitivity of the key is generally best from the contact movement of the entire finger area. The sensitivity of the key is generally best from the contact movement of the entire finger area.
2, connect the sensitivity capacitor. Connect the sensitivity capacitor, the capacitance range is minimum 5pf, maximum 100pf, in the use of the environment to select the appropriate capacitance value, the smaller the value, the higher the sensitivity. Capacitive touch chips have been widely used in remote controls, lamps dimming, all kinds of switches and car, small appliances and homeUse electrical control interface and other applications.
3, the size of the capacitor is related to the relative area of the two metal sheets composed of the capacitor, and is also related to the distance between the metal sheets. Hand touch will reduce the distance between the two metal sheets, resulting in a smaller capacitance.