How to identify faulty laptop power

At present, in the market appeared a large number of unqualified low-cost power products, they are either Jerry, or shoddy, in terms of performance and stability is difficult to be guaranteed.

Mandatory security certification in the CCC stipulates that all power products, must be added to the PFC link to increase the power generation from the electricity factor, reduce the state grid of energy waste. However, for these technical changes and certification management, the market of inferior power supply also has its own coping style. Only by mastering the recognition skills, can we distinguish the power of the pros and cons.

Tools/raw Materials

Notebook power

Method/Step

It's the most common way to look at the light, because most computer families don't necessarily have a high profile power supply to compare. Here you need to feel, the original power supply luster bright, and the shell surface feels slippery with astringent, high imitation due to the use of less, feel absolutely different, and bright than the original obvious.

Look at the interface between the two shells seam suture line, the original is more uniform and meticulous, and change the shell of the passive hands and feet, it is easy to see the shell gap too large phenomenon, but need careful observation.

From the network to query the relevant sequence is good, to play a different serial number is a very cost and kungfu things, high imitation of the absolute will not do so, so the cost is too high, better to do the original. So high imitation of the serial numbers are generally rigid, just one. And the original after each appearance and people's identity card, have a unique serial number.