How to identify second-hand repair Board

Recently, when I visited the computer market, I found many second-hand goods, repairs, or public bags in the market. In particular, the third floor of the Pacific phase I and phase II is even more a gathering place for these products. In order to prevent users from being cheated, Xiao Bian provides some methods to identify second-hand goods, return goods and sample goods based on his own experience. After all, Xiao Bian has also used the experience of these items.
Make up the first statement, if the seller clearly tells you that the goods he is in hand are second-hand goods, repair or contractor goods, and the price is also cheap, it is understandable. At this time, you need to know how to reasonably purchase second-hand goods and how to obtain related after-sales services, but if you need a new product, but the seller gives you the above products in a bid, that is the question to be discussed in this article. I hope you will be able to buy new accessories after reading this article. Next we will take a look at how to identify the second-hand goods, repairs and Work Packages of all kinds of accessories.
Card products such as video cards and sound cards, most of which can be opened casually due to the need for merchants to tag. Although this makes it easier for us to watch products, but it also makes it easier for sellers to do this. If you are sure you want to buy a product, first check the golden finger and check whether there is any trace of metal friction after plugging. If there is any, and whether it is repair or second-hand goods, at least used, try not to buy.
The main board product can observe each slot and Jack to see if there are any traces of use. In addition, you can also see some clues when you check whether the PCB works in a similar way (if you are a cainiao, you may not be able to see it ). If the solder joint process is rough in some places, or the solder joints are left, it is likely to be repaired. In addition, a more obvious part of the rework (soldered) is that the printed fonts on the PCB are obviously yellow, and most of such goods merchants will sell you much cheaper than the market price, however, the quality is hard to guarantee.
In addition, pay attention to the tags played by sellers. If there are multiple tags on the board and the time difference may be a period of time, it is likely to be second-hand goods, of course, it is also possible that the seller overwrites the second tag on the first tag (in this case, the seller may transfer the goods from the second store, depending on the product ).
You have the right to refuse such a product. Let the seller take another look. Some sellers may also erase the last tag, but there will always be some traces, because the tag is highly viscous and not easy to remove. As long as you view the card side to the light, if you can see that a part is not very smooth, not reflective, It is likely because of the tag.
It is difficult to distinguish card-type contractor goods, because most of the work kits are goods that merchants get from illegal channels, but their quality may be no problem (just like Yu 4200-8X in the past, gigabyte R9700 PRO), but the warranty period is relatively short (generally one month to three months), but the price is much lower than that of licensed products.
To be honest, these work packages are not suitable for consumers to buy, because if there is a problem after the warranty period, I really don't know how to do it well. Hardware enthusiasts are really suitable for purchasing public packages, because they are pursuing performance. When these handbags are out of warranty, they will change to something with higher performance.