How to adjust the LED display to have a red background and black characters

What should I do if the words on the LED display are black and the background is red

LED display screen, the text is black and the background is red. Solution:

1. There is a problem with the wiring or it is loose. Before flashing, please replace the modules and control card cables one by one.

You can try to use long cables to skip the modules before the flash point one by one. If there is no flash when skipping a certain module, it means there is a problem with this module.

3, some modules will flash with high brightness, lowering the brightness can solve this problem.

Some modules will not flash when the power supply voltage is adjusted to 4.6V. It is recommended to try this method to solve the problem. Please make sure you are adjusting the voltage of the switching power supply and not the software or control card. At the same time, all power supply voltages of the entire screen need to be adjusted to the same value.

5, this module cannot adapt to high-frequency scanning. Reduce the "Scan Frequency" in "Advanced Screen Parameter Settings" and see if that solves the problem.

6. Check whether the aluminum chips in the box are short-circuited, whether there are debris on the control card, and whether there is stress deformation during the installation of the control card.

Extended information:

LED display advantage analysis:

1. Area ductility. If the LCD area is large, it is difficult to achieve seamless splicing. LED display screens can be extended arbitrarily and achieve seamless splicing.

2. The luminous flux of LCD plasma screens decays very quickly. Generally, they need to be replaced after about one and a half years of operation. However, LED displays will be fine for at least five years under the same operating conditions.

3. The LED screen refresh machine can use interactive technology to strengthen the interaction between the screen switcher as an advertising media and the advertising audience, such as customizing the touch screen and realizing cloud technology broadcast control management.

4. In terms of display effect, LED display screens are also better than LCD screens in terms of high brightness, wide viewing angles and good color reproduction capabilities. LED screen brushing machines are commonly used in airports, shopping malls, hotels, high-speed trains, subways, cinemas, exhibitions, office buildings, etc. The target customers have strong spending power and huge advertising value.

What software can be used to distinguish whether the display is LED or LCD

There is no such software.

1. Through the system, you can check the model of the monitor in the system properties. There will be a description of the product change on the model number. But not directly. For example, a certain brand of monitor. LC in LC2260 means LCD display. The official naming method of this manufacturer shall prevail.

2. Just look at it with the naked eye. Can the thin thing be an LED? This is not accurate. In displays, those using ordinary CCFL backlights can also be made very thin.

so. You can check it through the manual or product information. Look at the backlight type column, LED will be marked LED. If it is a normal backlight, it will be marked CCFL backlight.

Whether it is LED or CCFL backlight. They are all LCD (Liquid Crystal Display). The difference is that the backlight used is different.

Real LED. Civilian LED displays are currently not mass-produced. Real LED displays do not require the use of liquid crystal substrates. Instead, each pixel is imaged by directly displaying it with a light-emitting diode. Commercial ones such as the large outdoor advertising screens you see are real LED displays.

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