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by Contributing Writer on November 30th, 2009
Professionally Researched. (What's this?)
Laptop power supplies can cause many unusual issues including poor battery life, erratic behavior and corrupt data. A failing power supply may become overly warm or generate buzzing or whining sounds. Any power supply noise should be immediately investigated. Laptop power supplies convert AC power from the wall to DC at the laptop. Several components can fail inside the power supply through heat, moisture or impact damage. Power supplies for laptops usually fail due to electrical issues, such as power spikes or lightning strikes, as well as low power situations during brown outs. Failure also occurs through damage at the laptop connector, which can become bent or broken if not treated carefully. A failing power supply may become hot to the touch, fail to charge the battery, or make noises such as buzzing or whining sounds. Erratic behavior or trouble starting up the computer can also be signs of trouble. There are many small electrical components inside a laptop power supply, including capacitors which can deliver an electrical shock if touched. Attempting to repair a power supply is not recommended. New and used power supplies for laptops are easy to find and are inexpensive. Check the manufacturer's site for replacement parts first. If the manufacturer's part is too expensive, new and used parts are readily available at online auction sites. Universal power supplies are also available from many electronics stores. MobilePowerSupply.com: Toshiba AC AdaptersLaptop Power Supplies
Power Supply Failure
Power Supply Symptoms
Repairing Power Supplies
Replacing Power Supplies
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by Sparks on September 19th, 2010
It's either overloaded, badly designed, or about to fail, I'd say.
Can you use a 20 pin power supply with a 24 pin connector?
by Answerbag Staff on May 15th, 2011
| 1 person likes this
Can I Leave the AC Power to My Laptop On All the Time?
by Answerbag Staff on January 31st, 2011
| 1 person likes this
Can I use the same power supply with different Dell laptops?
by Answerbag Staff on May 13th, 2011
| 1 person likes this
What should I build it?
by katery on August 9th, 2011
| 1 person likes this
Does a battery backup for a computer have to have the same wattage as the power supply the computer?
by Echo141 on July 22nd, 2011
| 1 person likes this
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