Question about HP Compaq Presario V2000 Notebook

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My mother had the computer plugged into an apartment wall jack . and had been using it a while that day.. all of a sudden the computer screen went White. she tryed to shut it off but it wouldnt.. so she took the battery out.. put it back in and turned it on. the screen wouldnt display anything lights light up u can open the cd drive and put cd in and it sounds like its running but nothing happends.

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1 Answer

Why won't my magic jack work plugged into the wall outlet?


Magicjack uses the internet. It has to be hooked up to a computer using the internet. Its just skype for regular phones. Skype is free. magicjack cost 20 bucks. its a scam

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Why will my magic jack work plugged into the wall outlet?


This is a common problem with the magicjack. It works when plugged into a USB port on the computer, but not when plugged into an AC wall socket.

Problem:
The separate power converter module has failed.
When the magicjack is plugged into your computer USB port, it is getting power directly from the 5 volt source in the USB port.
In order to use AC wall current to power the magicjack, a power converter module is needed. That module contains a transformer and rectifier that coverts 115V AC into 5V DC. That module is no longer supplying 5V to the magicjack.

Tech section - you can probably skip this part:
The problem is poor quality low ESR electrolytic capacitors in the power module. ESR is Equivalent Series Resistance. A low number is good, high is bad. The ESR of a capacitor is measured with an ESR meter.
The 5V output of the power module measured only 3.5V. I took the power module apart to to trouble shoot. I found two 220uF 10V capacitors that were labelled "Low ESR" (C8 and C9). I measured the ESR of these caps and C8 measured 1.5 Ohms. I replaced the C8 cap and it fixed the problem. 5V output was restored.

Solution:
I do not recommend repairing these power modules. I did it out of curiosity. These modules are very cheap.
Magicjack is aware of the problem and offers a replacement. To contact them, go to www.magicjack.com and go to "support". They will ship you a new power module for about $5.50. Some people have reported that the replacement modules from Magicjack are no better than the originals and have had repeat failures.
Consider getting a power module from another source. There are lots of AC to USB power converter modules available on Ebay for only a few dollars. Search Ebay for "magicjack power adapter".
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