SF789 AC /DC Adapter

Do not use low quality ac adapter?

My SF789 ac adapter not working?

When the SF789 AC adapter (charger) fails to work, it will neither charge the laptop battery nor provide power to operate the laptop without battery power. Power issues on a laptop are compounded because a laptop has two power sources: AC adapter (charger) & battery. When SF789 AC power is not available, power is provided by the laptop battery.

If you're having issues with your SF789 AC adapter not charging your laptop, please try to follow these steps to solve the problem.

Inspect the SF789 AC adapter, cables and adapter (DC) port on the laptop for damages

1. Check if the indicator light on the SF789 adapter is lit.
2. Unplug the AC adapter from the wall outlet.
3. Unplug the SF789 AC adapter from the laptop.
4. Check the AC adapter and cables (including the power cable) for signs of physical damage or overheating.
5. Check if the pin inside the plug or SF789 adapter port is bent, broken or damaged.

Verify the wall outlet is working:

1. Unplug the SF789 AC adapter from the wall outlet.
2. Connect another device to the wall outlet to verify if the wall outlet is working correctly.
3. Try a known-good wall outlet.
4. Plug the SF789 AC adapter directly into the wall outlet.

Drain remaining power:

1. Unplug the SF789 AC adapter from the wall outlet.
2. Disconnect any external peripherals connected to the laptop.
3. Press and hold the Power button for 30 seconds to drain a residual power from the laptop.
4. Plug the SF789 AC adapter into the laptop.
5. Turn on the laptop. If your laptop still can't start, you need a new SF789 ac adapter.

11 Tips on Choosing the Correct SF789 Laptop Charger

It is not difficult to find the correct SF789 laptop charger if you are ready to do a little research. Many people end up purchasing wrong laptop chargers from the internet simply because they do not set aside enough time to look for the correct information. To help you in this regard, the following is a compilation of some important tips on finding the right SF789 charger for your laptop:

1. Before you make up your mind to buy a new charger, make sure you check the SF789 laptop power supply and detachable wires for any faults. Just make sure that your charger is indeed faulty before you decide to place an order either online or offline.

2. Laptops in a series may or may not have the same SF789 charger. Different models manufactured by a company have different specifications. Always keep the compatibility aspect in mind while making such purchases.

3. You must scout for the correct information. Finding laptop chargers can be an extremely convenient process if you have the right information. This information can be found on your laptop or the old laptop charger very easily. Note down the manufacturer's information labelled on your old SF789 charger. Use this information when you perform an online search.

4. If you are going to purchase from a local computer or electronics store, look carefully at the list of all computer models compatible with a SF789 charger under consideration. Laptop chargers generally come with a list of various laptop makes.

5. Turn your laptop face down and note the product information stamped by the manufacturer. These specs are provided on different parts of the laptop. Look for the product specification stamp that reads something along the lines of 'AC Adapter.' That is where you can easily find the correct model number of all chargers.

6. Make sure you have the right pin connectors while purchasing a SF789 charger for your laptop. These pins should be compatible with your existing wall sockets. Charging your laptop can be a bother with a new charger if its pins do not fit into your room's wall sockets.

7. You can find a laptop charger with additional features. These days, it is possible to find chargers that trip the laptop power supply as soon as there is a voltage fluctuation. These chargers are great, especially if you live in an area where power fluctuations are frequent.

8. It is possible to find a universal charger nowadays since many manufactures are selling one-for-all chargers. These laptop chargers are fine as long as you find one that is compatible with your laptop.

9. Always check the voltage, input, and output before buying any charger. These details are labelled on the product packaging. Make sure this information is in keeping with the specs of your laptop.

10. Do not be tempted by unbelievably low prices on some websites as you may end up placing an order for a duplicate product. Always buy laptop chargers from a reputed or professional site.

11. In principle, the more authentication the more reliable the adapter is. Don't buy a compatible SF789 adapter with few certifications, it will hurt your machine.