HP DV3-2209TX laptop adapter plug in the power, keep squeaky, the sound is not big, but the computer can not open the machine, ruled out the socket and poor contact problems. It is estimated that the power is broken, the power of the original price is very expensive, may I ask the power adapter can repair it?
To see how bad the degree, to repair point try to repair it
Can not repair the original buy it generally should not be more than 300
Do not repair the external power supply. Aged to repair or easy to bad. You can buy directly.
The main three parameters
Voltage: hp notebook is generally 19v. As long as the original can be. If there are marked 18.5v (ACER) 20v (DELL) can also be used
Current: hp is generally 4.74A. Can be bigger than this. Can not be small, the Internet has 3.5A. See how much you are. Can be big and small
Interface size: hp is generally 4.5mm round head. This can be directly to the computer city than with the match. It is not to buy a voltage and current the same old head.
20-40 yuan will be able to get. I have bought a few. office. There are at home. Do not bring trouble.
Power adapter is not repaired, generally bad directly replace the new power supply, HP big mouth with needle 90W original power supply needs about 200, notebook hardware puzzled answer
This power adapter failure is very special, my personal experience is the power of the positive and negative short circuit, while attention to the center needle broken
