The use of Led displays is becoming more and more common, and manufacturers are becoming more and more. Everyone is promoting the advantages and goodness of their own products, which has led to dazzling people in need: so many manufacturers, which is better? Once again, when there is a need, when choosing a product, it is best to choose a manufacturer with a certain scale and good after-sales service, and check the goods before delivery to ensure that the product has no problem. So how do we check if there is a problem with the screen?
1, visual inspection and feel: unevenness in general, the feel can be checked out, you can see if there is a problem with the screen;
Secondly, it can be seen that the coating has not fallen off, the screen image has no color cast, the color is consistent, and whether there is a bad light phenomenon;
- Check whether the color of the screen is consistent with the sample (without obvious color difference under direct sunlight), and see if there is any dry, leaking bottom, fading, or mechanical damage;
3, silk screen appearance: see manufacturers have not strictly in accordance with the design requirements silk screen. Whether the color is uniform;
- The deviation of the shape of the led box is not more than 0.5mm, and the diagonal is not more than 1mm; see if the nut and the nut column are not processed by the tooth; whether the welding is not firm, whether it is soldered, whether it is leaked, or whether the welding point is Smooth