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Compacq 1200 will come on sometimes and some times it won,t

The battery is no good but the ac adapter works find checked it with volt meter and you can plug it up and it will come on as long as you don,t unplug it you can cut it off and on but if you unplug iy it might not come back on for three days

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Re: compacq 1200 will come on sometimes and some times it...

HI Chollymock,


I suggest you get a new battery.  Now that is a $50 proposal. I found you the best seller on ebay to get one from.  Most of the other sellers are frm China. IU-Tech is a USA based Seller from Bohemia, NY.  His price and warranty is best from all sellers in the USA on Ebay.  His Feedback is good as well. 


The Following URL will put you onto the Battery you need for your Laptop.

Posted on Oct 13, 2007

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I plug charger in and hav no led light to say charging battery nearly dead

If you have a Volt-ohm meter you can check if the AC adapter for your laptop is giving out the correct voltage. Also if you have a meter and you can see that the voltage is correct on the adapter try taking out the battery and plugging in the ac adapter and test the battery connection on the computer for voltage, if do have voltage to the adapter but not the battery terminal it could be a motherboard issue. A quick question, is the ac jack loose or does the plug move around easily when plugged in?

Mar 16, 2012 | Dell Studio 17 Laptop

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Battery won't charge

there can be 2 probs
  1. your charger must be repair .
  2. your life of your laptops battery must be over.

Jun 13, 2011 | Dell Inspiron 3500 Notebook

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My gateway ml6732 laptop will not power lights come on when plugged into the power. Could there be a problem with the on/off switch?

Unlikely as even with the power switch off the power led would show current from the AC adaptor was reaching the laptop. Try testing the AC adaptor first by plugging a volt meter into the DC jack, with one probe set to the inside of the jack and the other to the outside, set at 20 volts and see if you get a reading.

If the power is reaching the DC jack, then check the connection at the jack port for tightness and make sure the jack is a good fit

Try removing the battrey and using it on AC power alone, sometimes a failing battery will cause problems

If this fails, it is possible that the internal fuse on the motherboard has gone

Dec 30, 2010 | Gateway ML6732 Notebook

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Dell 2650 DC wont work

make sure the charger you purchased has the correct voltage out and amperage(in millivolts) as requested by the laptop computer, if not you risk the chance of damaging your laptop. although they fit in the power plug, it does not mean theyre compatible. The specs should be located at the bottom of the laptop or inside the battery bay.

Apr 01, 2010 | PC Laptops

1 Answer

Laptop not powering



AC power adapter How the AC adapter worksThe most common type of AC power adapter involves a small box, withone wire to go to the computer and another wire to go to the wall.There is usually an LED light on it, to tell you that it is on. (Is itlit on yours?) By the way, Apple notebook power adapters often have anLED that is actually built into the side of the computer, not into theadapter box, so obviously it won't light up when it's not connected tothe computer.
The power adapter box does several things. It lowers the voltage from the wall's 120 volts AC to typically 19 volts DC (it will be labeled with the exact voltage). It includes some power noise filtering. It often includes an automatic circuit breaker or overload detection. If this gets tripped, you can generallyreset it if you unplug it from everything for a few minutes.
You can measure the voltages on your AC adapter with a multimeter. When it is unplugged from the computer but still plugged in to the wall,it is normal to find that the voltage may be 1 to 3 volts higher than theprinted output rating.
Troubleshooting: AC Power adapter LED is off when you plug the adapter into the wall but not into the computerHas it been overloaded? Is the power strip turned on / is the outlet working? Is the cord from the adapter to the wall fully plugged in on both ends (try wiggling)?Your adapter may be fried- try borrowing an indentical adapter from a friendand seeing if that one will work in it's place (but do not plug it in to your computer, or you might fry your friend's adapter).
Troubleshooting: Check output voltages with a volt meter/multimeterFor those of you with circular connectors, your task is easy. Measure the voltage between the inside and theoutside. A diagram on the adapter's label will tell you which should be positive and negative
For those of you with the 3-pin Dell power connectors, I don't have a diagram for you yet, sorry.If you try measuring each of the three possible pairs of pins, you should get 20 volts between oneof the pairs.
Power distribution inside the laptop How laptop power distribution worksvoltregulator.jpgOkay, the power comes into the plug on the back of the computer. This connects it to metal tracesinside the mainboard of the computer. These will be connected to voltage regulatorswhich often output 5 volts, 12 volts, 3.3 volts, and the CPU voltage; they sometimes look like the image at right.
These will be connected to cylindrical capacitors distributed throughout the mainboard. Capacitorsact like tiny, fast batteries, supplying extra power where needed to maintain a steady voltage during high demand.
Finally, power goes to all the devices that need it.
Power for the LCD display is usually done seperately. Generally, LCD backlights require high voltage to operate.A component that might be called a power inverter will step the voltage upto what is needed for the backlight. Sometimes this inverter is a discrete andreplacable component, and sometimes just a chip on your mainboard. It is also involved in the brightness control.
The battery is an important part. It supplys power to theinput-side of the voltage regulators, just like the power from the AC adapter.Additionally, there is a charging circuit, which uses the power from theAC adapter prior to the voltage regulators, to charge the battery. (By the way, this is why the AC adapter voltage is always rated higher than the battery's rated volatge-- you need higher voltage for charging.)
There is a separate page exclusively for Laptop Battery Problems.
Short circuitsAnywhere in your laptop, physical or electrical damage can cause a short circuit.A short circuit will consume all available power, causing your laptop to not turn on.If your power adapter LED comes on when you plug it into the wall, but then goes offwhen you plug in the laptop, you probably have a short circuit.
Troubleshooting short circuitsAn ohm-meter / multimeter will read less than ~3 ohms when you measure theresistance between sides of power going into a short circuit. When measureing betweenthen power pins going into the back of your computer, consider the 2 pins whereyou expect voltage to be applied by the AC adapter. If the resistance indicatesa short circuit, this is bad.
A common trick to help isolate possible problems is to try to removing anything that mightbe a short circuit. Take out the battery, the hard drive, the DVD/CD drive, the floppy drive, PCMCIA cards, USB devices,miniPCI cards. See if the computer will then turn on.
You might have luck with a thermal imager (see story below) to find a hot spot caused by theshort circuit.
Spilled liquidLaptops exposed to small amounts of spilled liquid are repairable in some cases. Liquid can cause the following types of damage:
  • Short circuit due to wet liquid (problem goes away after liquid evaporates)
  • Short circuit due to dried liquid residue
  • Corrosion (especially bad with soda such as Coke or Pepsi)
  • Electronic components damanged by above short circuits
Immediately when a spill occurs, you typically want to turn off thelaptop, turn the laptop upside down (so the liquid goes out the sameway it came in), remove the power and battery, and allow to dry atleast overnight.
To remove dried liquid residue: Try removing the keyboard andcleaning any components that have dried liquid, by using distilledwater and Q-tips.
Computer turns off randomlyYour computer can turn off due to: power overload in the AC adapter,overheated processor / clogged fan,overheated battery, pushing the power button, Windows telling it to,the BIOS telling it to, loose wires (especially the power cord), orintermittent short circuits.
The most common problem is cooling. Try going somewhere air conditioned. Notice if the fan isbroken or clogged with dust (common older HP problem).

Good Luck

Aug 17, 2009 | HP6710b 2.1GHz 15.4 160GB 5400 PC...

1 Answer

Wont turn on but when I click the power button three lights flicker three times.

Remove the battery and try to power up. If good, replace the battery or just leave it off. If no good, test the power adapter with an electrical meter (the centre pin of the adapter is the positive-red lead of the meter. If the adapter is not putting out 18 or 19 volts, then that is the issue and you should try another adapter. If this fails, contact HP support, and ask them this question specifically - "Does this problem qualify my laptop for a one-time warranty enhancement?" HP has known issues with some of their laptop mainboards and will sometimes repair the unit free of charge. Hope this helps!

Aug 08, 2009 | HP 530 Notebook

1 Answer

Laptop stoped working

I have an Aspre 3680 as well, and a flashing adapter light is not a good sign, I suggest you get a multi meter and test for to make sure you are getting the 19 volts output that are required to run the laptop and charge the battery.

My goal is to provide you with a helpful fix ya solution, if you found this advice helpful please rate it as Fixya, thanks


Dec 09, 2008 | Acer Aspire 3680 Laptop

2 Answers

Battery not recharging.

Look on the charger itself & it will have the correct output voltage & polarity stamped on the charger. Then get a volt meter to verify if the correct output voltage is present. If the volt meter reads less than what is stamped on the charger, then I would recommend replacing the charger at that point.

Nov 20, 2008 | IBM ThinkPad T41 Notebook

1 Answer

Battery won't charge

sounds like the ac adapter isnt working.Test the adapter with a volt meter.The sticker on the adapter should tell the output voltage.

Mar 22, 2008 | HP Pavilion dv1000 Notebook

1 Answer

Compaq Presario 1200 won't charge battery

dear N9YK

you can follow this

If you have a loose connection where you plug in the power on your laptop, or it works intermittently, you could have a bad dc jack. Symptoms
  • Move the power plug and the laptop loses connection
  • Broken or cracked dc jack
  • Laptop won't charge but worked on battery
  • Power LED and battery LED flicker when the adapter tip is moved
  • Battery won't charge
  • Sparks come out the back of the laptop
Why does this happen?
  • Flaw in manufacturer designs
  • Use of universal or non-original ac adapter
  • Lots of plugging and unplugging of the ac adapter
  • Tripping on or pulling the ac adapter cord
or you can check your dc amper in your adaptor




Mar 16, 2008 | Compaq Presario 1200 Notebook

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