How to repair the Hitec touch screen when common problems occur
If the Hitec touchscreen display is confused, there are many reasons. For example, if the battery voltage is too low, the display will be confused. In addition, it may be that the power strip in the mechanical equipment is not installed and the storage area is messy. In addition, there may be some issues with the hardware on the power strip that cause the Hitec touchscreen display to be confusing. At this time, in the face of these problems, when maintaining the Hitec touch screen, ** will find a direct and thorough solution according to the specific cause of the problem, and it is easy to solve. If the power strip is not installed in the mechanical equipment, install it.
If the Hitec touchscreen display is correct, the frequency and operation of the digital settings are healthy, but there is a problem with the terminal control. What is the reason? How to solve this problem? In this case, as long as you check the voltage with a multimeter, a commonly used inspection tool, you will find the cause of the problem. First, test the voltage from the switch. If the power supply of the mechanical equipment everywhere is healthy, the problem can be judged on the connection line, but it takes more time and effort to find it on the flat cable without drawings, and the problem is solved
Power supply no display, operation alarm, touch pad breakage, touch glass, unable to communicate with the computer, touch no response, power supply black screen, power supply white screen and other faults. Touch the screen with your hand and the buzzer responds, indicating that the program is operating normally. The voltage of the 12VDC voltage bar is normal, the control voltage ENABLE is low, and the efficiency is low.
Indicates that the circuit or lamp damage occurred at high voltage. After disassembly, it was found that one end of the lamp turned black, and there was still no light after replacement, check whether the high-voltage transformer was damaged. There is no such high voltage transformer on the market, so I bought an LCD high voltage strip with two tubes, fixed after wiring, normal power-on, troubleshooting. The touch screen handwriting is invalid, the keyboard is normal, the indicator stick mouse is invalid, and the external USB mouse can be used normally.
Repair process: Based on previous repair experience, it can be judged whether there is a problem with the touch lens, that is, whether the pointing rod is damaged. The above problems can be solved immediately after the replacement of the pointing rod, which is prone to damage. When most of Fujitsu's series touch screens encounter the above problems, the pointing lever can be replaced for fault repair.
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