I have a Hp laptop Pavilion (pav 9000 series) with a blown fuse
The power adapter light to the AC power cord is displayed and charging , but the three little lights in the front are not, I think maybe it is a fuse problem and not the complete motorboard that's bad, it does not turn on at all.
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Re: I have a Hp laptop Pavilion (pav 9000 series) with a...
Unfortunately I think HP warranty policies state that you can only change by yourself the components covered by dedicated doors on the chassis bottom, such as the hard disk drive and RAM(obviously your upgrade parts are not covered by hp warranty and not supported by hp support). So regaldess of how complicated the damage is to fix(most of the led indicators are soldered on the motherboard) you need to call the HP support and they will fix it, they are usually fast and you will have your laptop back in a week or so...otherwise you will probably lose your warranty if you try to locate and replace the fuse,replace the LEDs, replace the connectors... it might be a connector plugged backwards but you should not directly try to fix it.
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A) AC adapter (Charger), has to be KNOWN to be good, before going on. Used on a working laptop to see, or multimeter is used to check Voltage (DC)
The plug end that goes to the laptop, from the AC adapter, has a Center Hole, and a cylindrical outside metal shell.
The Function knob is set to DC Voltage. If just a symbol, the symbol is a dotted line over a solid line. If more than one DC Voltage scale, the Function knob is set to the 0-50 Volt DC scale.
The Positive (Red) probe lead of the multimeter goes to the Center Hole, and the Negative (Black) probe lead of the multimeter, goes to the cylindrical outside metal shell.
You should be reading 19 Volts DC.
Also have an assistant gently wiggle the cable FROM AC adapter TO laptop, and the power cable TO AC adapter. If there is a fluctuation on the reading, there is a broken wire, or wires, in one of those cables.
B) Check the DC Power Jack. This is the jack on the laptop (DC_IN) that the AC adapter plugs into.
Has a Center Pin, and an inner cylindrical metal shell. Battery removed, use an eraser on the end of a No.2 pencil, and see if you can GENTLY wiggle the Center Pin around.
ANY perceptible movement of the CENTER PIN, means replacing the DC Power Jack, (By the way, is it an 8510p, or 8510w?)
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Ya know........Pavilion dv8 is a Series of Notebook PC's.
Encompasses a LOT of models in the series.
Have no idea of which LED in front you are referring to.
1) Test the AC adapter (Charger) with an economical multimeter. Average cost is $5 to $12. Set to DC Voltage, and check the output voltage of the AC adapter.
As far as I can tell the DV8 series uses 18.5 to 19 Volts. (DC) Use an AC adapter that is rated at 90 Watts, NOT 65 Watts; if using a replacement AC adapter.
The port on the laptop that the AC adapter plugs into is a DC Power Jack. (DC_IN) The plug end on the power cable from the AC adapter, and plugs into the DC Power Jack, has a Center Hole, and an outside cylindrical metal shell.
The Center Hole is the Positive connection. This is where the Positive (Red) probe lead of the multimeter goes. The outside cylindrical metal shell is the Negative connection. This is where the Negative (Black) probe lead of the multimeter touches.
Also have an assistant gently wiggle the power cord TO AC adapter; and power cable FROM AC adapter to laptop. Intermittent reading indicates a broken wire, or wires.
DC Power Jack LED lights up? Means nothing to me. I want to know the FULL DC Voltage is getting TO the laptop, and there are no breaks in the wires of the power cable, or power cord of AC adapter.
THEN AC adapter checks out.
2) AC adapter checks out? What condition is the DC Power Jack in? Battery removed, use the eraser end of a No.2 pencil, and GENTLY see if you can wiggle the Center Pin around.
ANY perceptible movement of the Center Pin, means replacement of the DC Power Jack. Fortunately for this series the DC Power Jack is connected to a cable with wires, and they end in a plug connector. Which plugs into the motherboard. It is now a DC Power Harness.
Should be on the motherboard, near where the Power Connector Cable plugs in. Rectangular shaped with 8 'legs'. ('Legs' are J-Leads)
Believe one or more to be the problem. Typed the rest above because it is a power flowchart, and when diagnosing always go through the steps. Would s-uck to replace a motherboard, when the problem was an AC adapter, it's power cord, or the DC Power Harness.
This is more on the subject, by using the HP pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's; as examples,
this is how i did one the other day and it booted right up, do not turn your laptop on, remove the battery and do not have your ac adapter plugged up to the computer, after you have took the battery out and unplugged the power cord, hold the power button down for 10 seconds, this releases all internal power from the motherboard, after this step is completed do not put your battery back in, plug your ac adapter up to your computer and push the power button and it should boot up. The Hp DV series computers have a recall on alot of the batteries, so you might want to look that up on the HP website.
1. Check your power cord & adapter. 2. If its working then check the battery, reseat the battery & check. 3. If available then check with another battery 4. If no, then remove the battery & switch on the PC in AC mode. 5. Check if battery charging indication or AC power on indication is glowing. if not then need to change ur motherboard. 6. If indication is OK, but could not power ON then check ur RAM for any loose connection or dust. clean & reinstall. 7. If still no display, connect an external monitor, check if display is comming. 8. If Display is coming then your LCD is faulty and need to replace.
First of all I want to say that to explain the problems clearly and to use good language. What kind of signs are showed by your laptop? Does it not boot up with battery or with AC adapter? How does it appear your laptop's screen? What is the status of the various LED indicators of your laptop? Does the cooling fan spin? What about the condition of the DVD player? Are there any beep sound hear from the laptop? Any way as a beggining, try a good AC adapter.