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1) When plugged into power, and plugged into the laptop, gently wiggle the cable from the AC adapter TO laptop.
Do the same on the power cord TO AC adapter.
NO? Go on.
2) The port on the laptop that the plug from the AC adapter plugs into, is the DC Power Jack. If we are discussing an Acer Aspire 5738Z Notebook PC, the DC Power Jack resembles this one, (Not installed),
Laptop batteries power a laptop when it is not connected to an electrical outlet. If the laptop battery fails to charge when the laptop is plugged into an electrical outlet, the battery is likely dead and needs to be replaced. Unfortunately there is no way to fix a dead battery. However, while a dead battery is the likely cause, it is not the only cause. The AC adapter may be broken, in which case the battery won't charge, or the battery contacts may be dirty and need cleaning. Prior to replacing the battery, perform simple tasks to ensure a dead battery is the cause of the problems.
1.Power down the laptop. Gently pull the AC adapter from the side of the laptop for removal.
2.Place the laptop in front of you, bottom side up. Locate the battery release mechanism. This can be a button that slides or needs to be pushed to unlock or release the laptop battery from the housing unit. Press or slide the mechanism. Slide or lift the battery from the battery bay for removal.
3.Insert the AC adapter into the side of the laptop. Power on the laptop. If the laptop does not power on, ensure the AC adapter is securely plugged into a working electrical outlet. If the electrical outlet is working and the laptop won't power on, the AC adapter is not properly working and needs to be replaced. Remove the AC adapter.
4.Dip a cotton swab in a small amount of rubbing alcohol. The cotton swab should be damp, not dripping wet. Lightly rub the dampened cotton swab onto the battery contacts and battery bay contacts to remove dust, buildup and grime. Allow the contacts to air dry.
5.Align the battery over the battery bay. Either press or slide into place. A clicking or snapping noise produced from the locking mechanism will confirm the laptop battery is securely locked into place.
6.Install the AC adapter. Allow the AC adapter to fully charge the battery for 8 hours.
7.Remove the AC adapter. Power on the laptop. If the laptop does not power on, the battery needs to be replaced.
Cleaning the ink cartridges with the HP Printer Toolbox
Click Start .
Click Settings .
Click Printers .
Right-click the icon of the printer in use.
Click Properties .
Click the Services tab.
Click Open the HP Photosmart Toolbox or Service this device.
Click the Device Services tab. This tab does not display in Windows XP; proceed to the next step.
Click Clean the Print Cartridges .
Follow the onscreen prompts.
Manually cleaning the ink cartridges
Turn the printer on and lift the top cover.
After the ink cartridges have moved to the center of the printer, unplug the power cord from the back of the printer.
Remove the ink cartridges and place them wide side down on a piece of paper.
Prepare a clean, foam-rubber swab or a lint-free cloth slightly dampened with water.
Locate the copper-colored circuitry strip on the back of each cartridge.
Clean the copper-colored strip with the dampened swab or cloth. Do not wipe the nozzle end of the cartridge or touch the nozzle plate.
Clean the carriage contacts on the back wall of the ink cartridge carriage with a damp foam-rubber swab or lint-free cloth. Use a dry foam-rubber swab or a lint-free cloth to remove moisture from the contacts.
Cleaning the ink cartridge cradle
Assume an eye level position with the HP Photosmart printer.
Locate the ink cartridge cradle.
Using clean, moistened swabs, wipe the underside of each wall of the carriage where fibers may collect and come in contact with the paper. Repeat until no ink residue is seen on a clean swab.
Reconnect power cord when finished cleaning.
When finished cleaning the ink cartridges and the cradle, print a test page.
I had the same problem. This procedure from the "Technical Questions" section of http://shopdelphi.com/consumers/support/faqs/myfi/ worked for me: "My MyFi won't power up, how do I reset it?
To reset your MyFi, start by turning the receiver off and removing it
from its (car, home, audio system) cradle. Then remove the back cover
and battery. Using a small paperclip, press the reset button located on
the top left corner of the battery compartment. Now plug the AC power
adapter into a wall outlet and plug the power port directly into the
bottom of the MyFi (battery stays removed). Wait 10 seconds and listen
for a beep. After you hear the beep the message "insert battery" will
appear. Cycle the MyFi to ensure it powers up and powers down. If the
power cycle is normal, then turn off the MyFi, unplug the power adapter,
and reinstall the battery. Re-plug the AC power adapter directly into
the bottom of the MyFi. Wait 10 seconds and listen for a beep. After the
beep you will see the message "battery charging". Leave the MyFi
plugged in until it's fully charged. You will see the message "charging
complete" displayed. After the MyFi is fully charged, turn it on and
reset to the factory defaults. Unplug the MyFi from the AC power adapter
and using the battery power leave it on until it fully discharges
(approximately 2-5 hours). Plug the MyFi in using the AC power adapter
to recharge the unit and resume normal use.
If you need help at any point during this process contact us at
1-877-463-3574 for technical support."
You may not be getting power through the base because of a bad physical connection between the base pins and the receiver, and it won't power up because it has no battery charge. Try plugging the AC power adapter directly into the bottom of the receiver (not through the cradle). Push the adapter plug toward the back of the receiver to see if the + sign on the battery on the top right of the screen shows that it is now receiving power and charging. Alternatively, with the receiver in the base, try pulling the top of the reciever toward you to tilt the receiver forward on the pins to see if it starts charging.