I am working on a Armada M700. The battery is fully charged and the AC power supply is working properly. No lights are coming on when connected to either power source. Unit will not power up at all. Could this be caused by the voltage regulator that attaches to the board. Has anyone had this problem before?
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Re: Compaq Armada M700
Always start with the simplest solution first so start by cleaning all the contacts, AC adapter laptop plug, laptop socket, laptop battery contacts and battery contacts.
How have you confirmed power output from the AC adapter? have you used a voltmeter to ensure you are getting power at the laptop end?
Have you used a voltmeter to test the battery?
Assuming you have tried all this don't forget that almost any component can interrupt power on some laptops, however you're 2 main culprits with this kind of problem are usually power controller (voltage regulator) and in some cases, on a laptop of this vintage, the charge controller built in to the battery.
Try it with a different battery if you have one.
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I'm not understanding what the problem is. If the battery is dead, and you remove it, how do you expect it to recharge? Why would you remove it? So, you take it out and nothing happens.So? What were you expecting to happen?
Before you do anything more, read the documentation that came with your laptop to learn how to care for your battery. The amber light usually blinks with the battery is running low. When you plug in the A/C adapter, the light usually becomes steady to indicate the battery is charging. At tleast until you remove it.
From your description it seems the battery hasn't been charged right, so there maybe something wrong with the battery or laptop.
First, do a clean to the your Compaq Armada M700 battery and the connection chip on your laptop, then to see if there is something get better.
When you charge you laptop, there will be a lights to note the state, do you have noticed?
Else if your Compaq laptop battery are used for 2 years please try a new one
then theres a chance the battery is shot. this happens alot with labtops it seems and the only way to fix this would be to purchase a new battery. what happens is not all computers run on just AC power and when fully charged still use the battery. when the computer is plugged in all the time its constantly useing and charging the battery at the same time and this causes the battery to drain entirely and become useless, here is a link to get a new battery. i sugest looking around online to find better pricing but heres a start. hope this helps :)
When you power your system up do you get a message saying battery charge failure or some other disappointing driver message? Try powering down, removing the battery, and look for a little button on the underneath of the battery. You should be able to press this button and a series of lights will or won't appear. If they light up it means the battery is truly charged. If not there is something wrong with the connection. Try wiping the surface off and replacing the battery. Also make sure the pin that you place into the laptop to charge the battery is free of dust, etc.
There is a dimmer function that is part of the keyboard on most notebooks. You use the Fn key and some other key (Mine is F1 and F1) Look for what looks like Sun in blue print on the key. You should find 2 of them. One will be the brightness up and the other brightness down. You can try those.
More likely, something has come loose internally.
1. It could be the backlight for the screen is broken or a connection loose. You should be able to see the light when you look at the side of the display.
2. The AC power connector may have been broken and the notebook is only on battery power. By default most systems are dimmer when on battery power. Check to see if your charge indicator light is on. If not, that may be the problem.
It could be just a coincidence...but lets try a few things...
Remove the battery and unplug from the wall. Hold the power button on...and then plug back into power...after 8 seconds release the power button. Once your computer boots to desktop...shut down...and replace the battery.
Changing the harddrive should have anything to do with teh battery...
See if your battery starts charging after this trick.
Seems your laptop has been sufferd a lot by the power. i just suggested you to have your mother board check.I think there should be something wrong with your mother board. By the way, did you try powering on it without the battery? If not, you should have a try on that.
Those may have 1 or 2 different problems.
Cold Solder joint on Mobo.
Bad DC Power Jack.
1: if it is the Cold Solder, you can reflow the solder and be done with it.
2: if it is the DC power jack, It should be replaced.
For simplicity lets call them DC(A) and DC(B)
There are 3 connections to it. Gnd, DC (A), and DC (B).
When the powersupply is plugged in, contacts (A) touch to send +DC to the laptop. (B) is open.
When the laptop is using battery power, contacts (B) touch to send power from the battery through the system.
Over a period of time (inserting and removing the DC Power Cord), the contacts become fatigued, or oxidized and the DC(B) never closes - so it won't work from DC Battery.
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