With small portable notebook advantages , has been highly favored people . Although compared to before , the prices of notebook computers a lot , but still relatively expensive , a lot of limited budgets friends all eyes are on the second-hand notebook market . But since the origins of complex second-hand laptop , old and new Condition varies , sell notebook business has no shortage of self-propaganda, so pick a second-hand notebook computers have become a big problem . Here I briefly a few selected second-hand notebook note acer travelmate 4200 battery
, we want to purchase help.
Note battery life issues
Notebook computer battery is the source of life , but also the most rapidly aging laptop accessories in one of the market at present most of the second-hand laptop are using the products two to three years , while an ordinary lithium batteries in use Two to three years after the appearance of aging will more or less , and some life time only over one hour . Some merchants will be replaced before the sale of second-hand laptop battery batteries, the surface looks to extend battery life time , but this is a desirable behavior , because laptop battery 's internal structure and circuitry are more complicated Replacement batteries battery packs a greater chance of failure , and it is time to use a few days after the cell performance dropped dramatically , there may even damage the notebook body , it is not recommended to purchase replacement batteries for notebooks .
Of course, if you buy a laptop to use only as a fixed , but also aspects of the link power supply , then the battery problem becomes less important , can stand more than an hour of battery does fit to use as a UPS power supply .
Screen shaft can not be ignored
In addition to tablet computers, almost every laptop should have the screen shaft , and shaft each time the laptop is to be worn mechanical parts , so wear is second-hand laptop screen hinge is an important issue selected . If the shaft is too loose , it would be very awkward to use notebook .
Shaft can not be hidden elastic , consumers can be seen directly , but those are usually sold with notebook JS "a song that can be adjusted tight "as an excuse to deceive consumers. Some laptop screen hinge loose, can indeed be adjusted by adjusting the screw , but most of the laptop screen is not adjustable shaft when the shaft after the middle of the damping material wear can only replace the entire shaft . Even those who can adjust the notebook , because the damping material has been worn , so not too much time on it will become loose . Imagine a laptop screen in the course of a sudden collapse that would be how it feels .
Highlights of the screen , dead pixels and dark spots
Bright and dead pixels LCD display is quite familiar to most consumers , but for the screen dark spot is not everyone know about the . Dark spots more subtle than the bright and bad points , but also more affecting normal use. Classes are small dark beans so much , there may be a big bigger than a thumb , and the bright and dark spots are different classes is only a partial dark colors darken slightly , do not pay attention have been observed in the light color does not come out the next , and replaced with deep color Background could not detect . Dark classes There are two main reasons for the formation of , first, because external compression caused by such a small area of dark spots , the middle color depth, some of the outer relatively normal , thin and light notebooks in the more common. Another dark spot is caused because the LCD screen aging , this relatively large area of dark spots , and may continue to deteriorate. Because of the color than the surrounding dark spot just a little deeply, it can easily be acer travelmate 3260 battery
crafted desktop hidden away . So many times in the selection of the notebook background for a few test machines , or use a professional testing software to check , for example Noika Ntest, it can find the bright spot , color cast and so on.
In addition , LCD brightness drop is naturally used laptop common problem , generally can not be avoided , if not very obvious is also acceptable , but if found to have clear yellow liquid crystal panel is best not to buy .
Note See peripherals and interfaces
Used notebook peripherals and interfaces is also very high failure rate zone , keyboard interface, access to undesirable things not working or have occurred, these peripheral interfaces are very important and many consumers are often overlooked in the inspection of these machines Problem . Among the most frequently used interface should be USB interface, audio interface and network interfaces , especially USB interface seems to be more important. USB interface, common interface, the failure is not voltage , in which case such as mouse and USB devices without a power supply can not normally use, but with power equipment such as printers , scanners , etc. can be used normally. So I suggested that in check when the USB interface, the mouse can bring U disk or other testing , and other interfaces , such as LAN , Modem, Speakers, serial port , parallel port , PCMCIA, MIC interface and infrared interface, better try it .
Keyboard , mouse is the most important computer input devices, frequency of use is the highest , most laptop keyboards with special keys designed 83 or 86 , must try to buy every time a button is sensitive and feel is comfortable, key bits Still flexible , handwriting is clear . Keyboard failure is a very serious problem , although not on the keyboard keys are used for each , but they are indispensable. When you find one key failure when the business may tell you it was a " humble " in the key, as long as the replacement of a key run on the line . But often not the case , a key may need to replace the entire keyboard may cause , and replace the notebook 's keyboard usually requires spending a few hundred pieces , is not worth it. In addition, as most people are using the notebook to use an external mouse , so that the notebook touchpad not essential , it is not true , imagine the day you need to forget how to bring the mouse over it .
More importantly, internal injuries
Beware of overclocking the CPU. Processor will always be the core of computer equipment , so when purchasing notebook must be taken seriously enough , the best brands in the choice of a model acer extensa 5620g battery
of a good second-hand after the Internet look up the standard laptop configuration, note that CPU, Frequency can also use the testing software to test some of occupation . CPU performance is directly related to the performance of the whole machine , in order to satisfy the second-hand laptop can use a given period , as proposed in the options when choosing the time near the factory , high frequency machine , because the notebook computer processors typically Are not upgraded .
The hard disk has bad sectors alert . Hard drive itself is a relatively fragile equipment , but also vulnerable parts of the notebook , there are bad sectors in hard disk for the machine 's overall stability rather negative , if there are abnormal ring or disk using the procedure in sudden drop in speed , Would have to be careful. Market, many second-hand hard drives used in notebook computers are relatively old, and generally 4200rpm, 512KB cache hard drive or even an older model , capacity, mostly 20G the following . If you feel that in addition to the hard disk , the machines were satisfied with all aspects of the case, you can consider replacing the hard drive of a new , after all, the process of using notebook stored in the hard disk is very important in the Shujuxiande .
Memory should not be too small . The size of the memory capacity directly affects the performance of the whole play , currently on the market of second-hand laptop memory capacity 32MB to 128MB in between , there are a few 32MB less in when purchasing as we choose larger than 64MB , it is best 128MB or more , perhaps their would be more appropriate to upgrade to 256MB . Pay attention to the time of purchase Zexu notebook using a kind of memory, whether the matching model upgrade.
Warranty issues also need attention
The greatest disadvantage of second-hand laptop may be its warranty issues now. Although some second-hand laptop can also provide after-sales service business , but the limitations of this service is too small , but time is often very short , usually only a short month. And basically most of the second-hand laptop no after-sales service , if the laptop broke down , you can only pay for their maintenance costs . However, as is generally the situation , I can only recommend that you try to select the larger size , more machines , accessories and complete business point of purchase, such businesses are often good reputation , is also easier to repair them .
Summary
Although the notebook has a relatively cheap second-hand prices, cost is also high, but still have to consider when buying second-hand laptop you buy the motives and purposes . Some people are to play the game , some people just deal with the document , on the Internet like the , in addition to a number of advertising design or video editing is like a pair of notebook computers in the required Bi Jiao Gao Yi Wai , Pu Tong 's Peizhiacer extensa 5220 battery
basically Dunengmanzu requirements . Therefore, the time of purchase must be to choose according to their own needs , such as the type you want to play like , take a more than two thousand dollars Maige Pentium II 's second-hand laptop is sufficient. In short , the second-hand laptop purchase, require rational analysis of their own needs , the courage to accept their shortcomings , dare to face after the failure to buy .
এতে সদস্যতা:
মন্তব্যগুলি পোস্ট করুন (Atom)
কোন মন্তব্য নেই:
একটি মন্তব্য পোস্ট করুন