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Sony PCG-F540 Power Adapter
Because Sony has been known to use a single AC adapter that is probably used on other similar units, double-check the part number or model number of the adapter. The Sony PCG-F540 AC adapter is responsible for two things, to charge the onboard battery and powering the laptop. A universal power adapter is a possibility but only if necessary. If your decision is to purchase a different brand charger, please check on both the voltage and amperage output. Upon choosing a replacement charger, choosing the Sony brand one will probably be the safest way to go.
Major clues the power charger will not live much longer
- Most Sony adapters will get warm to the touch when plugged in for any length of time
- Battery does not charge up completely
- The laptop does not function without the battery installed
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