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Sony PCG-F690K Power Adapter
If your decision is to purchase a different brand charger, make note of both the voltage and amperage output. Upon choosing a replacement adapter, the actual Sony brand is the best one to choose. A universal AC adapter is another possibility if you absolutely need to. The Sony PCG-F690K power adapter is needed for two reasons, to charge up the main battery and powering the laptop. Due to the fact that one Sony adapter is probably used on other similar units, make sure you check the part number for the correct one.
Important clues of a poorly working Sony power adapter
- The unit will not run while just using AC power
- Battery does not charge up whatsoever
- Most Sony AC adapters can get quite warm when plugged in for 10 minutes or more
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