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Compaq R4000 Power Issue

Hi. Appreciate any advice. The past 2-3 days I wake up to an "off" computer when I know I left it on. When I try to boot up the laptop the computer appears to be dead, no lights, nothing. I cannot start it up.
I started doing some tests. I have found when I start playing w/the cord I can get a front charge light. then I quickly push the on button and it boots up. So, when I move the computer, it can quickly just die. Totally off. I thought it was the power cord, but now I'm thinking it's not. So, I ran a test. I checked the battery and it said 100%. I moved my laptop (which includes the cord) and it died. I think it's a power problem, some where near the power cord inlet. Anyway to fix myself. Thank you all.

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Re: Compaq R4000 Power Issue

I have a r4010US. I was having the same exact problem with my laptop. It would only charge if I the power cord in just the right angle, it would turn off if moved, and it was driving me nuts. I bought a new power supply off eBay and it didn't work at all. I then figured it was the power jack, so I took apart the laptop and started looking at the jack. It seemed to be fine so I put the laptop back together and th same thing happened. This time just for the heck of it, I cut the end off of the old power supply. I was shocked, all of the little wires were frayed away and broke from where the cord and tip of the connector joined. I took off the plastic barrier from the power supply i bought from ebay and took a bunch of the wires from it and wrapped them around the tip of my old power supply and then wrapped it with electrical tape then duct tape. Walla my computer works like a charm again! don't know if I was sold a **** power supply off ebay, or if the r400 is just picky, but my jerry rigged power supply works great and solved th problem.

Posted on May 12, 2008

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Re: Compaq R4000 Power Issue

Poor deb---

are you referring to the fan assemblies that go all the way across the back , including over the jack? It comes out in one piece, there are screws at the forward and kind of hidden and hard to get to without completely disassembling the entire thing. I think you'll see that the little piece that comes up and over the jack is part of the fan assembly.

The hp website has a service/hardware manual that has blow-apart illustrations in it...that's how I found it, and you will too.

it's called---
HP maintenance and service guide
part no 33540402-003

Posted on Jan 18, 2008

Re: Compaq R4000 Power Issue

Great, will do, you are very nice, thank you!!!

Posted on Jan 15, 2008

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Re: Compaq R4000 Power Issue

Actually you can basically get this repaired free From HP or send it out for a 3rd party repair and get reimbursed from HP for the repair. Weve repaired way too many of these to list and the Schottkey rectifier in the supply line as well as the DC jack should both be replaced. Go to and see if your SKU and serial fall into the paramiters. If you want to do yourself they can be a pain but there is a better jack to use Manned by the same company as the factory one, Post back if you need more help!

Posted on Jan 15, 2008

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