Choose to buy an old CRT monitor 'long live'

Three times cheaper than the new, second-hand CRT monitor still attracts many people. However, most of the old screens sold in the country are from China, so they need some experience to buy long-life products.

Having bought an old computer screen of CRT type (using a light bulb) with a 15 inch IBM brand for only VND 250,000, Mr. Nguyen Van Hung, Ho Chi Minh City was very pleased when the image was very sharp and bright at first. Just a few days after the warranty period (1 month), the monitor fades away, especially after about 20 minutes of operation. Hero could only take it away and run the money to buy a new one completely.

Old CRT monitors are available in a wide range of brands including Dell, IBM, Sony, Samsung, Proview, Viewsonic, Compag, Mitsubishi, Philips, Hitachi, Samsung, Sony, LG . Their prices are also From VND 180,000 - 500,000 for sizes from 14-21 inches of curved screen. FLAT is priced between 400,000 and 750,000 VND in sizes from 17-19 inches. These products are usually only warranted for 1 - 3 months. With this price, the old CRT screen saves 40-70% more than investing in 100% new products.

The old CRT screen is currently focusing a lot at Nhat Tao electronic market, HCMC. Photo: HT Mr. Le Phuoc Vu, specializing in buying old CRT monitors in District 7, Ho Chi Minh City, said: " Recently, a lot of monitors using video bulbs are imported from China. so their quality is also very complicated . " Mr. Vu also shared, the common errors of the most common CRT monitor are blurry and unclear images. In this type of screen, the light always shows three basic colors: red (Red), green (Green) and blue (Blue). For some reason, one of these colors is weak or completely gone. This phenomenon in the profession is called "loss of rays".

Normally, Japanese lights can be used for 15 - 18 years. The types originating from Korea and especially China, the durability is weaker, only from 5-7 years.

Many long-term opinions suggest that screens using Sony Trinitron lamps give bright, sharp images that don't hurt the eyes. The brands that use this type of lamp have Dell, Mitsubishi . and often have Trinitron on the bottom edge or on the back.

Mr. Nguyen Van Hau, a long-time screen repairer in Thu Duc, said: " Sony Trinitron's picture light technology makes the image very beautiful and smooth. However, this is also the fastest quality monitor due to failure. The lamp is weak, or it has lost its rays, in fact, the Trinitron on the market is 50,000 to 100,000 cheaper than other lamps . "

Sony is considered a famous brand in display technology. However, according to many long-time workers, this is also the brand's most difficult product to fix every time there is a problem, because the structure is very special in its technology.

Dell products are specialized in Trinitron technology but have less durability. Mitsubitshi also used this type of light.

Mr. Hau commented: " Panasonic screens are the least damaged. Mitsubishi has the same quality. However, these two types of products are rarely seen in the second-hand market ."

Viewsonic's CRT from 1999 and earlier has very good quality when produced directly in Japan. Later, most of the goods originated from Thailand so the life expectancy was much lower.

The old CRT monitor of IBM often had image blurring error after operating for about 10-20 minutes.

Mr. Hau also gave a ranking order of high quality to low durability, color of some popular CRT monitor types: Panasonic, Mitsubishi, Philips, Hitachi, Samsung, Sony, LG .

" Should not be based on the external form as well as the production year " is the advice of many experts for consumers when choosing to buy an old CRT monitor.

There are so many manufacturers of this product so the first thing to choose to buy is to know the origin. The screen, regardless of any brand, should ask what lights it uses and which country it uses. It is best not to choose products originating from China.

The next step is to check the brightness, balance of the three primary colors and the sharpness of the displayed image. You should not rush to believe in the new famous or Date brand 2004, 2005 .

All of these forms can be very sophisticatedly faked from the painted cover, the new silk screen print. Even years of production can be renewed.

For older monitors, you should choose to buy in reputable places or consult with experienced people.