The color bias fault can be solved by adjusting the maintenance adjustment mode.
Flower screen or white screen are the main problems of driving voltage of industrial monitors. If the driving circuit of the screen is on the main board, then it should be the fault of the main board. If the driving circuit of the industrial monitor is on the LCD screen, the display screen should be replaced in this case, and the risk of maintenance is also great.
The problem of screen bright or dark lines is usually the fault of LCD screen.Bright line fault is usually connected to the LCD screen body wiring problems, dark line is generally the screen itself leakage, the above two problems are basically sentenced to death for industrial display, no maintenance value, because the price of a screen is too high.
The whole industrial monitor unit has no electricity.This is actually a very simple fault. Generally, there are two kinds of industrial monitor power supply: internal power supply and external power supply, which are common outside.Whatever the power supply, its structure is much simpler than the power supply of CRT display. It is vulnerable to some small components, such as fuse, input inductance, switch tube, regulator diode, etc.A relatively rare fault is that the mainboard CPU does not start the power supply. The principle of this situation is very simple, that is, through the keyboard to the CPU, and then through the CPU output a control signal to drive the power supply, converting the integrated circuit work.
Other relatively rare fault disturbances.In different working modes, some interference may occur in industrial monitors, but most of them are normal phenomena, including voltage instability. Because of the special production process of industrial monitor, it is necessary to detect the problems in the standard working mode before they can be identified as faults.
Industrial monitors don't turn on when they turn on, but power indicator lights are always on.This kind of problem is mostly caused by abnormal high voltage, which belongs to the action of circuit protection. In this case, the LCD screen is usually visible, the way to look is "squint". The key point of overhaul is to compare the repair methods. Because the high-voltage panel of industrial monitor is usually designed symmetrically, and the two sides may not be damaged at the same time. Old machines are prone to problems with boost transformers and lamp tubes, while new machines have relatively more protection circuits and process problems.
Above are the common faults of industrial monitor. For the faults of whether the screen will be bright or not, it is necessary to find out where the problems occur in order to give the right remedy. Non-professionals should not take the machine apart to check, so as not to cause more faults.
