B&R's touchscreen screen does not show the cause of the repair failure
1. Power supply problem: Check whether the power supply** of B&R's touch screen is normal. Make sure the power cord is securely connected, the power switch is on, and the power supply voltage meets the requirements.
2. Touch screen backlight failure: Touch screen backlight failure will cause the screen to be no display. Check if the backlight is on, if it doesn't, it could be a damaged backlight or a power issue**.
3. Connection problem: Check whether the connection cable of the touch screen is correctly connected to the controller or host. Make sure the connection is secure and not loose or damaged.
4. Broken touch screen: Physical damage to the screen may lead to no display. Inspect the touchscreen for visible scratches, cracks, or chips.
5. Controller failure: Controller failure may cause the touch screen to fail to drive the screen normally. Check the controller's status indicator and alarm information for possible causes of failure.
Common faults of B&R touch screen: touch screen power on flower screen, white screen, black screen, blue screen, no display when powered on, can not be turned on normally, no backlight on the touch screen, the brightness is not clear, the backlight is dark, there is a backlight without characters, the indicator light is not on, half of the touch screen can be touched, the other half can not be touched, can not be touched, the touch pad is broken, the touch response is slow, the touch is misplaced, the touch screen does not respond, the LCD screen displays a vertical bar, the LCD screen displays a horizontal bar, the LCD screen displays multiple screens, the LCD screen is displayed chaotically, the boot content is disordered, Troubleshooting such as not being able to enter the system interface when booting, crashing (not working when it works), not moving halfway through booting, and not communicating on the touch screen.