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Sony VGN-SZ640 Power Adapter
If your decision is to purchase a different brand charger, make sure to check both the voltage and amperage output. When choosing a new charger, the actual Sony brand is usually going to be the safest choice. The Sony VGN-SZ640 power adapter provides two functions, to charge the onboard battery and powering the laptop. Because Sony has been known to use a single AC adapter that can be used on other units, be sure you choose the right one. A universal AC adapter is another possibility if you are desperate.
Some warnings of a bad AC adapter
- Battery does not charge every time
- The laptop does not run without the battery installed
- Most Sony AC adapters will get warm to the touch when plugged in for any length of time
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Always get computer parts from a reputable seller if you purchase through a website. Sony VGN-SZ640 power adapter should really be bought new because of wear and tear on any old power adapter that may occur. Your Sony laptop will thank you for buying smart. Please be sure to write down the part number so you order the correct power adapter replacement.
Feel free to download your manual for help.
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