Manuel Jirado High Voltage Power Supply

Amp Test Tester

Laptop Power Adapters Have Issues

Power adapters are a frequent cause of problems for laptop users. From the simplest damage to the cord itself to a disconnect of the power jack from the motherboard, problems abound.

If there are issues with powering the computer, the first thing to check is the compatibility of the power adapter with the laptop. An exact match is very important. Some power cords can power-up a laptop, but if the volts and amps are not matched to that laptop, damage can be done over time.

On the bottom of the laptop, there will usually be small print that specifies the "input" required. The power adapter brick will also specify its "output." Volts must match; amps can be greater but not less than the laptop's requirement. In addition, the plug that goes into the port must be an exact match.

The easiest fix involves the cord that plugs into the wall and is detachable from the power adapter "brick." If damage is limited to this section of the power cord, it can be replaced easily and inexpensively.

Bring the entire power adapter to the store so that an exact match can be made, as there are different size plugs that connect to the brick. It is wise to also bring the laptop so that it can be checked for compatibility and powered up.

If damage is visible to the brick itself or to the cord that runs from the brick to the laptop, the power adapter must be replaced. If the adapter's viability is unsure, a computer repair shop can easily test the power adapter.

A tester registers the output to be sure that it matches the adapter's specifications. An adapter that is no longer consistently powering at the specified output should be replaced.

When finding a replacement power adapter, be sure to find one that the manufacturer specifies is suitable for that model. Find an exact match on the volts and the plug, and be sure the amps are "ample." Replacement power adapters are widely available by model, with a typical cost of between $35 and $90 (new).

Universal power adapters are also available, retailing for $60 to $120 or more. When purchasing a universal power adapter, insist your brand and model (or family of laptops) is listed as compatible with that adapter. Damage can result if an inappropriate power adapter is used for an extended time.

If there is a sliding switch on your universal power adapter to adjust volts, be certain that this switch always stays in the appropriate position. Apply tape to it if necessary. Usage at the wrong voltage can lead to costly repairs.

If your laptop is having power issues and the power adapter passes a power test, you may have a problem with the power jack. Damage to the jack can occur when plugged in if the plug takes a blow or endures prolonged pressure.

A laptop's power jack is most often soldered to the motherboard, and its replacement is technically demanding and very time consuming. While the jack itself is priced around $25, labor can be $200.

The laptop must be disassembled, and the old jack de-soldered from the motherboard. After the new jack is re-soldered to the board, the laptop must be reassembled and tested.

Laptop power adapter: TOSHIBA Equium A100 Laptop AC Adapter, Dell Inspiron 1300 Laptop AC Adapter, HP COMPAQ Business Notebook 6710b AC Adapter

About the Author

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Thexton TX121 Wire Hawk Circuit Tester $34.05 Fast handy For 12V/24V circuits Wirehawk requires just one hand to test circuits in hardtoreach areas. Works two ways: Captures and pierces wire with unique hook design or can be used as an icepick type tester. Hook feature makes Wirehawk simple to use and easy on fingers. If circuit is live bulb in handle lights up. Made of rugged plastic. Has 16 gauge 44inch ground wire with 50 amp clamp. Test up to 15 volts.

Electronic Specialties ESI304B Fuse Buddy Tester ATC Fuse 0 to 20 Amp Range $38.29 Blowing Fuses? Plug in the FUSE BUDDY Tester and read circuit amperage draw and voltage. Original fuse is replaced inline during testing thereby maintaining circuit protection. Makes circuit testing easier FUSE BUDDY adapter end is shaped like a fuse. Ideal for electrical troubleshooting at the fuse box. Can be used to measure all circuit draws up to max amperage. Can even be used to test parasitic drains (battery drains). Measuring range is determined by your DMM most DMM's have a 10 Amp or 20 Amp test range. Measuring Capability: 48V DC or AC.

Electronic Specialties ESI302M Fuse Buddy Tester Mini Fuse 0 to 20 Amp Range $38.29 Blowing Fuses? Plug in the FUSE BUDDY Tester and read circuit amperage draw and voltage. Original fuse is replaced inline during testing thereby maintaining circuit protection. Makes circuit testing easier FUSE BUDDY adapter end is shaped like a fuse. Ideal for electrical troubleshooting at the fuse box. Can be used to measure all circuit draws up to max amperage. Can even be used to test parasitic drains (battery drains). Measuring range is determined by your DMM most DMM's have a 10 Amp or 20 Amp test range. Measuring Capability: 48V DC or AC.

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Portable Alcohol Breath Tester with Key Chain 601 $5.49 FeaturesAlcohol Breath Tester Small and portable Quick response and resume Key chain and torch function Performs 3-step alcohol test: The test result (use alcohol level) as follows: Green light on: Safe - under 0.02% BAC (or 0.1mg/l BRAC) Yellow light on: Caution - 0.02% BAC (or 0.1mg/l BRAC) to 0.05% BAC (or 0.25mg/l BRAC) Red and yellow light on: Danger - over 0.05% BAC (or 0.25mg/l BRAC) Set the torch switch to to turn on the torch light, and do not use the test function in this status Use two "AAA" alkaline batteries (not included) Approved: CE / FCC After sales service: 1 year warrantyUnit N.W/Size: 22.6g/73×39×20mm Inner Packing: gift box Qty per Carton: 150pcs Carton Meas: 40×38.5×43cm G./N.W: 7.9/7.1kgs NoticePlease make sure to keep holding the POWER button during alcohol test.If left idle for a long time, the Red amp; Yellow LEDs will keep lighting long during alcohol test as the unit need more time for warm up. Please depress the POWER button several times repeatedly until it can work..When the power of batteries becomes short, the Red amp; Yellow LEDs will keep lighting long during alcohol test. Please replace with batteries right now.When after drinking, it is recommended last after 20 minutes, because 20 minutes is approximate for alcohol to be absorbed into blood from the digestive organs, and residual alcohol remaining in the mouth takes this long to dissipate.For accurate result, do not repeat next test within 3 minutes after last time.Do not smoke and eat for 20 minutes prior testing.Do not use chemicals to clean the tester directly. Do not blowing liquid into the breath pipe.Do not use any excitant substances near the tester, such as paints, insecticides, alcohol etc.Do not place the tester in the tester in the closed environment with contaminated air.

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