HP/Compaq :: Presario C500 Backlight/inverter
Jul 22, 2009
I accidentally dropped my Compaq Presario C571NR and it fires up Ok, but the screen is black. I have tested the video card with other monitor and it seems to work fine. I did some research and I found that it could be that either the inverter board or the backlight might have gotten damaged. I have purched a new inverter card online (awaiting arrival) to replace the existing one, but I wanted to know if any of you know which of them has the propensity to get damaged first, the inverter or the backlight?
I'm hoping is the inverter because it seems the easiest to replace, but if it's the backlight, then I'm screwed because I've read it's quite difficult to replace and it's more expensive. Compaq says they'll charge me $300 to fix it (since my warranty has already expired) but I might as well get a new one if the new inverter doesn't fix the problem.
View 5 Replies
ADVERTISEMENT
Feb 15, 2010
My ancient C500 fan is noisy, a constant slight grindy noise. Its been like this for months and I cant take it anymore. Can I clean or replace it w/o too much trouble or is it time for a new laptop? Looks like I'd have to take off the whole bottom to get at it...which Iwill do, if it will shut the damn thing up.
View 4 Replies
View Related
Feb 10, 2009
I've got an old C501NR with 80 GB HD that blue screened and died. Disk check indicated failed sectors. Wont boot into windows. Hp said its dead or dying. So I bought a 160 GB and Windows wont see any of it, neither does Bios. HP said it was too big, would only handle 120 GB so I ordered one of those, same speed/cache as the original. Same issue, its not found by Bios or Windows setup disc.
Here is the fun part: HP now says I can only use a certain part number which seems like total BS to me. Surethe 2 I tried were western digital and they come with Seagates, but so what? So if it isnt THAT that prevents me the puter from seeing the new drives, and that seems highly unlikely, what is it?? The drives are seating and connecting just fine.
View 4 Replies
View Related
Mar 17, 2010
I have a DV9000 and the LCD suddenly went dim. I thought the inverter had gone so bought and fitted one. However now when the laptop turns on for the first time I can see the display for maybe 1-5 seconds (5 on initial start, less on soft restarts), but then it goes dim again.
I have tried unplugging AC/Batt and holding power for 20 seconds but it made no difference.
View 5 Replies
View Related
Apr 20, 2009
my HP ze4230 laptop Trying to reboot it with a new harddrive it went black on me with no warning.I put the old harddrive back in.Its still dark but I can see in the screen very faintly with a flashlight.I hooked it up to my desktop monitor and it worked well.My problem is,I took the inverter out but how can I tell if its bad or if its the backlight that is bad..
View 5 Replies
View Related
Nov 5, 2009
i have a presario c552us laptop and it recently started making weird noises around the fan underneath. i took a look and it seems to be coming from the fan. it sounds like some1 stuck something in there and its hitting the fan blades. doesn't happen all the time either. when the fan is spinning, sometimes its great(like right now) and other times it sounds horrible.
i took apart the whole laptop and cleaned out all the dust, especially in the heatsinks and fan assembly. it seems to spin fine when i use canned air on the fan blades. it has the normal high pitch fan spin without the grinding noise and what not.
not sure what the deal with that is, but maybe the fan has issues gripping or spinning itself.
so it sounds like i pretty much need to replace the fan and the motor.
can i replace just the motor and fan? or do i have to buy the whole assembly with the weird shaped heatsink?
View 4 Replies
View Related
Apr 27, 2009
I've read the sticky and many threads here but I'm confused. What is the symptons of the backlight/inverter problems?
My DV2000, when power off the monitor is dark, when power on, the monitor lit/iluminated. But nothing on the screen. The harddrive led blinks so it's accessing.
I thought it was inverter so I replaced it with the $8+ from y'allstore. It didn't work.
View 9 Replies
View Related
Dec 29, 2009
I recently reinstalled windows XP though I dont know if that has anything to di with this, I didnt notice the problem till a few days later so I tend to think not. BUt now there is only a slight difference in screen brightness when I plug in as compared to on battery. I wonder if my backlight is failing.
View 6 Replies
View Related
Aug 30, 2009
i am attempting to replace the CMOS battery in my presario; however, i can't seem to find it. i have tried to search for the service manual for this model but could not find it. i looked at the service manual for the C300 series and it indicated that the CMOS was under the memory module, but it isnt in the same place in mine.
View 8 Replies
View Related
Apr 5, 2010
Alright Well I bought a new inverter plugged it in and it still is doing the same thing. Only when i jiggle the wires the light goes on and i see the screen but not for long. I check for loose conncections but can't find any. The external display is fine. I'm wondering if it could be the actual bulb.
View 3 Replies
View Related
May 25, 2009
I'm thinking about picking up a usb wireless n adapter; which means I won't be needing the internal wireless nic. Since that's a mini PCIe slot, I was wondering if anyone has tried replacing that with one of the many SSDs floating around the web...
2 main questions I have about those:
If they're mini-pciE, why are there sata versions and pata versions out there? There's no sata or pata connector on these cards it seems, the pci-e connector is all there is. Do they somehow use the sata/pata controller on the motherboard via the pci-e bus?
2nd question; would there be any way to boot from one of these? The bios has a bunch of options for booting up, network, usb, usb floppy, etc... but none for mini pci-e or anything like that...
Laptop is a presario C500, more precisely c551nr, broadcom 802.11b/g nic, 80gb toshiba 5400rpm slow ..... hard drive, and a celery 440 running the show..
View 4 Replies
View Related
Mar 27, 2009
I have a laptop which has a dim screen, I am not sure if its the inverter or the back light that needs to be replaced. Its a Sony FS-740/w series laptop. I want to be sure which one needs to be replaced so that i can order it online. way to check if the inverter is working correctly.
View 5 Replies
View Related
Sep 14, 2009
I have a Dell 17" laptop and the screen shows this blueish green vertical on startup.
After a few minutes of warming up the line goes away and the screen looks normal. The line reappears on reboot though.
Looks like this is a problem with the backlight/inverter. The laptop is almost 4 years old, but I would like to keep it going a little while longer
View 4 Replies
View Related
Aug 19, 2009
I have a dell inspiron 600m laptop and my screen is dimmed out. If I turn of my laptop and restart it, the display will come on for a second ( but it is a little bit reddish) and then I hear a noise and it light goes off, and I can;t see anymore. However, I am sure the computer is still running properly
I am sure that the computer is on, and is functioning properly for two reasons:
1- if it is sunny, i can see my desktop, and what ever I have open, be that a browser, a word document, so on and so forth
2-when i connect my laptop to an external display everything is fine...
View 3 Replies
View Related
Dec 7, 2009
i have a sony vaio c2z - nvidia geforce 7400; x-black lcd
i have had a lot of problems with my display since august. although i didn't notice at the time, it happened soon after i installed the Win 7 RC.
when i start the laptop up the screen looks all distorted and the colours arent correct:
[url]
[url]
[url]
[url]
but when i take screencaps and connect it to another monitor everything looks fine.
[url]
[url]
i assumed the screen was knackered, but i installed a game a few weeks ago and it brought the display back to life, only for it to look crap again when i restarted. this also happened when i did a clean install of vista, only for the display to go bad when the updates installed.
i have tried many times, but have been unable to replicate this...............
View 10 Replies
View Related
Aug 28, 2014
I have a presario C500 I went to turn it on and it said enter power on password. i dont have on then after so many tries it said SYSTEM DISABLED 13865 i cant be with out my laptop i need it for school..
View 2 Replies
View Related
Mar 29, 2010
i just recently posted a disscussion on this model and i recently took it to a repair shop, at first they wanted $180 to fix it, which was ok, then they told us it needed a new harddrive, so it would another $100 more, so we went and got it from them without any work being done... now i have no idea what to do i just spent $200 to buy the thing and now its broke.
Symptoms:
Turns on to the windows recovery failure screen, push enter to continue to start windows and it trys to start up, it goes to the windows screen attemps to load for a second, then flashes a blue and shuts off and repeats the process.
View 6 Replies
View Related
Jan 12, 2009
to retrive my master password for my compaq c500 i get this message after entering 3 wrong password (System Disabled 15816)
View 3 Replies
View Related
Jun 29, 2009
Recently my CDRW drive stopped working. It show in windows explorer but does not read any cd's or dvd's.
The drive ejects when the button is pressed but when a cd or dvd in put in the drive, the drive does not turn.
cdrw model CRX880A. p/n = 438473-ABC
View 5 Replies
View Related
Oct 5, 2009
i have a compaq c500 (c501tu) laptop.
for about 6 months now when i run the laptop on battery power it dies after 15 mins.
i thought i needed a new battery but tested my existing one on my friends laptop which is the same as mine, a c500 series.
after fully charging the battery on my laptop i removed it and plugging it into my friends laptop and it gave me 45 minutes of power compared to 15 minutes on mine!
i did this thrice and had the same results. but when i plug it back onto my laptop i get only 15 minutes of usage.
View 3 Replies
View Related
Aug 17, 2009
The bottom left part of screen has two through bolts holding the hinge to the screen on my dv5000t.
At first the screen died as I closed the screen and discovered it had broke. This pulled out the display cable, the one from the motherboard. After I plugged it back in all was fine, except my screen was half attached.
So... I took apart the screen and through bolted the hinge to the lid, just below the LCD screen. I noticed a film behind the LCD that is attached to the hinges. I also noticed grounding plates on the inverter. Is the foil part of the grounding for the inverter or screen?
I have quadrupled check the connections. The Wifi LED still works, so I figured the ground is working but I don't know if it has it's own source. I am typing from the computer right now as it is hooked up to another screen.
I think its the inverter as there is nothing on the screen but pitch black even with a flashlight. Does anyone know how much voltage is suppose to come out so I can test it with a voltmeter?
I am sure there is something I did to screw it up, but I was delicate and don't understand how the inverter could have died just like that if it was working just fine.
View 5 Replies
View Related
May 2, 2009
I replaced this board and display worked for approx. one day, now no display again, notebook still diplays fine on external monitor.
View 3 Replies
View Related
Jun 25, 2009
My neighbor asked me to take a look at his zd7000. When we power it on, the screen turns on, but it stays black and displays nothing. If the laptop is hooked up to an external monitor it shows the graphics no problem on the external screen and still nothing on the LCD.
I took the the LCD apart and checked the ribbon cable to make sure it had a secure connection. That did not solve the issue.
My other idea is that the inverter is gone bad.
Do you guys think it is the inverter? Has anyone else had a similar issue?
View 3 Replies
View Related
Feb 22, 2009
i have a compaq presario c500 i have a problem that it wont charge and it wont run without the battery ...i know its not the charger and not the battery at fault as i have two of the same laptops and tried both parts from the other laptop with no sucess . is it more likely to be the motherboard or the actual mains plug on the laptop ....when i plug the adapter into the laptop it shows a charge light on front and the battery icon on screen shows as charging but it still dies the only way to get round it is it to charge it in my girlfriends laptop then put the battery back in mine ...is there any setting in the bios that would change how its charged
View 4 Replies
View Related
Feb 15, 2009
new screen/inverter/ backlight installed. NEW screen still black, but visible with flashlight. Went ahead and got ANOTHER inverter off eBay and tried that - screen still black. Haven't ever replaced a backlight, and the operation looks delicate (and expensive to HAVE done) ...
View 10 Replies
View Related
Jan 7, 2009
I have a problem with an hp zv6000 (no backlight). When I giggle the lid switch it will flash and sometimes stay on for a short (less than a minute) and then go back off. Inverter or just a bad switch,
View 3 Replies
View Related
Nov 27, 2009
I have a dv9700 that I have owned for over a year and recently upgraded to Windows 7 (about a month ago.) I was happy with how everything was working until suddenly today when I went to turn on my laptop it appeared the screen was dead...upon looking closer I realized that the backlight was off. I could barely make out anything on the screen but it did have an error message stating that Windows failed to boot and gave the option of repairing the system. I went through this "startup repair" utility (still no working backlight) and got my computer to boot up. Everything seems to run normally now except the backlight is still not functioning most of the time (at the moment I have the screen balanced just right so that it is on.) I had a similar problem with my screen about half a year ago but the laptop was still under warranty at the time so HP replaced the screen for free...not the case this time unfortunately I seem to remember reading that flashing the BIOS can solve a problem like this, however there is apparently no support for Windows 7 through HP Support's software and drivers page (I tried installing the latest version of winflash for my laptop...vista 64 bit but got an error message saying it was not compatible with my system)
View 3 Replies
View Related
Jan 28, 2010
I am having some strange problems with the backlight on my dv9700...I started a thread about this maybe 2 months ago but the backlight for whatever reason started working again and I didn't have too many issues with it until recently. Lately the backlight has only been working when it is plugged in...If I unplug it but leave the lid open it still works but as soon as I close the lid and open it again its out until I plug it back in and open and close the lid. Now I can't get the backlight to work at all except it lights up for 2 seconds or so upon closing and opening the lid. I removed the display bezel to access the display inverter and check for any loose or damaged connectors but they all appear to be fine...unplugging and plugging the display panel cable connector back in also causes the backlight to work for 2 seconds and then go out again. Besides the backlight issue the laptop seems to be working perfectly fine...can anyone help me figure this out? I should mention that I upgraded this laptop to Windows 7 right away when it was released.
View 10 Replies
View Related
May 4, 2010
In own a Pavillion DV7 2070ED. I spilled wine over the keyboard...
My insurance will cover this so money isn't really the problem. So I was thinking about buying a backlight keyboard instead of the original black one (which works really annoying in lowlight conditions).
Now I found a thread about backlight keyboard but I'm unable to find out which backlight keyboard is compatible with my laptop. On the motherboard there is input for the keyboard-backlight. So thats not the problem.
View 5 Replies
View Related
Jul 10, 2009
I just got a 8730w (non-dreamcolor) and experience serious backlight bleeding. It's kind of irritating because it's obvious. Brightness set at around half only.
Does HP warranty cover this?
View 4 Replies
View Related
