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Sony VGN-P798K Power Adapter
The Sony VGN-P798K AC adapter is needed for two reasons, 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 certain to thoroughly note the part number that is needed for this model. A universal power adapter is a possibility if you are desperate. When purchasing a replacement charger, selecting the Sony OEM charger is usually going to be the safest choice. If your decision is to purchase a different brand charger, make sure to check the output of amps and voltage.
Some warnings of a weakening AC adapter
- Battery does not charge up all the time
- Most Sony AC adapters will get very warm to the touch when they are plugged in for a period of time
- The unit will not function using just the AC power adapter
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