Having problems with your HP Compaq tc4400 Notebook ?

Connecting laptop tip to auto adapter

\015 Hi, I have a auto adapter to power a laptop with different tips. There wasn't a tip that fit my laptop, so I brought the appropriate tip only on ebay. The auto adapter outputs the correct voltage and current (18.5V, 3.5A). I cut the tip adapter from the auto adapter and there are two whites - one red one black. The wires from the new tip I need to add are one black, one white and a much thinner red one. Which wires do I connect?\015

Answers :

You may look the jack(tip) show here:
\015\0121ecfef4.jpg\015\0121) your car adapter, the red color wire is + pole which connect to the hole of jack(tip), the black wire is - pole which connet to outcover metal of the jack(tip). that is very common.
\015\0122) your new jack: check as smae as above. usually white color connect to red color, and black to black is ground connect to outcover of tip.
\015\012then you need check again the voltage pole, the tip 's hole should be possitive "+" and the outcover metal is negative "-" pole, it is very important.
\015\012hope help you fix it, please feedback any question any time, pleaae take a rating let me know how much helped you thanks!
I tried to do a similar hookup with an old AC power supply and a new laptop jack as described above for my HP/Compaq 8510p. My old power supply ouput wire (laptop side) consists of a coax style two wire arrangment so I hooked up the black wire of the new connector to the outside wire of the coax and the white and red wires to the center wire. Check the voltages and it seemed to work but the CPU is now at 100%! So more work to do.
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