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Sony VGN-AR550U Power Adapter
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. If buying off-brand, make sure to check both the volts and amps outputs. Upon choosing a replacement AC charger, the actual Sony brand is the best one to choose. A universal AC adapter is another possibility if you are desperate. The Sony VGN-AR550U AC adapter has two main uses, to charge any and all batteries and to provide a source of power for the unit.
Simple signals your power adapter is dead
- Most Sony adapters will get very warm to the touch when plugged in for 10 minutes or more
- Your Sony battery refuses to charge up whatsoever
- The laptop does not work while solely using the AC adapter
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