Experience buying old computer monitors

If you want to buy yourself a quality monitor, but their price is extremely high, the finance is not enough, then buying a second-hand product is a reasonable choice. However, the risk of buying second-hand products is great, many people have bought low-quality products or been scammed. So  the following  experience of buying old computer monitors of WebTech360 will help you own products that are "second-hand" but still durable, good and not afraid of taking risks.

Select the screen according to the intended use

The intended use determines the investment cost as well as the minimum requirements of the screen. If used for learning and entertainment purposes, the LCD screen can be selected in Wide mode for wide viewing, convenient viewing and monitoring of working windows as well as all images and text displayed. .

Choose the screen according to the purpose of use for the most reasonable price

If you buy a monitor for gaming or graphic design , you should choose a square screen with a high resolution. You can choose to buy a monitor with a resolution of 1024 x 768, 2048 x 1024 or more (depending on the speed of technology development).

Select old monitor by manufacturer

When sizes, specifications are equivalent, the manufacturer becomes the determining factor in quality and price. So, when buying used computer monitors , which brand is the best?

5 famous computer monitor brands in Vietnam today are: DELL, PANASONIC, SONY, LG and SAMSUNG . You should buy from these brands, avoid old products from strange, unfamiliar brands.

However, the brand is not the last factor to evaluate and choose because each product line, even though the same brand, is still quite different. Therefore, continue to follow the following experiences.

Preliminary assessment of old computer screens

To make a preliminary assessment of a used computer monitor product, you should first observe the color of the screen case - this is the part that shows how the screen has been used by the previous owner, is it well preserved, …? Do not choose a screen with an old, discolored, scratched shell. However, in case the shell is too new, you should also be careful because the seller may have replaced it with a brand new one.

Overall external inspection to assess the old and new condition

In the end, the best option is a screen with a moderately old shell, with labels intact, with no or very few scratches or damage on the surface.

Check the monitor's origin and year of manufacture

The closer the production year is to the current one, the more recent the product is with the technology, and the long enough shadow life for continued use. Meanwhile, the farther the screen's production year is, the higher the risk of damage, difficult to repair and replace.

Also, don't forget to consider the origin of the screen as well. This information is usually printed on the back of the screen. Products from large technology countries such as the US, Japan are probably the most ideal. Of course, we can also come across products from other countries. At that time, find out and identify reasonable star information.

Evaluate the screen on and off mode

Once you have selected a number of suitable products, continue to check the actual condition of the monitor. Proceed to plug in the power, turn on the switch, if the screen lights up after 5-7 seconds, it is ok, if it takes longer, it should be considered. Check the 4 corners to make sure the screen doesn't shrink or tilt.

Turn on and test the ability to turn on and off and other characteristics

In some cases, when opening the old DELL or SONY screen , you will see a slight vibration. This is due to residual demagnetization taking place inside the device. Choose a screen that can be opened up and for true-to-life colors.

After the test, turn off the screen and check if the device is completely turned off, there is a light spot in the middle, or it's dim? The screen runs fine, of course, without all of these conditions.

Check out the screen tweak buttons

Since you are buying a second hand computer monitor , it is necessary to test the operation of all custom buttons. You need to make sure these buttons are in good working order, allowing for effective adjustment, accurate image scaling. This process can take quite a while, stay calm, if you find a problem, switch to another screen.

Check screen backlight

Old screens are often prone to " light leakage " around the edge, to check and detect this situation, give the screen a single black display to detect whether white light of a different color appears or not. .

Check for dead pixels on old screens

Due to the limited lifespan of the screen, after a period of use it often appears dead pixels, this is also a sign that the screen is about to fail.

You should thoroughly check this error of the screen by changing the background colors of black, white, red, blue, etc. to detect dead pixels. You can ask the salesperson to test it for you.

Select screen resolution

Checking the resolution of the screen is done simply through a few simple steps. With Win 10, you just need to right-click on the blank background on the screen, select Display settings, the Display section has displayed quite clearly the resolution of the screen. Pay attention to check what is the maximum value that can be set.

Check the resolution of the screen

With a computer screen , if the size is 17 inches, it should have a resolution of about 1024 x 768 pixels. Meanwhile, the screen size 20 - 22 inches, the resolution is 1680 x 1050 pixels. Screen size, screen type such as HD, Full HD, etc. will have different resolutions.

Choose a monitor that allows you to adjust and select the appropriate mode. It is best to use a Full HD screen as well as today's higher standards for the best image quality and visibility.

Select according to the refresh rate of the screen

High refresh rate means better screen performance. With LCD screens, you should choose the type with a minimum refresh rate of 60Hz or higher.

How to check the screen's refresh rate with Windows 10 is similar to checking the resolution. You also right-click on the blank background on the screen, select Display settings , find the item Display adapter properties . In the window that appears, in the Monitor tab is the scan frequency value of the screen.

Choose a product with a reasonable scan frequency

Check the response time of the screen

The last parameter to consider when buying a used computer monitor is the response time of the monitor.

To explain this value, imagine that a computer screen is made up of thousands and millions of pixels. Each of these pixels is like a light bulb. To display images and colors, they are properly turned off and on. The display's frequency response indicates the total time a pixel lights up and then turns off.

In particular, the off time is usually longer than the on time, so sometimes you will find that the screen displays 2 colors because the device does not respond to the display frequency. The old color has not yet disappeared, the new color has begun to show, so it affects the image. As such, the smaller the response time, the better. Specifically, this number should be under 5ms. That is also the minimum parameter if you buy a used screen.

Did some of the above experience buying old computer monitors help you feel more confident? Whatever product you choose, the most important thing here is to find a reputable and quality seller. Only in this way, you can rest assured to buy genuine goods as well as avoid the situation of selling old, damaged, poor quality goods.