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The back lit LED's go faulty frequently also if DC - DC inverters are used fpr driving the LED's they may be faulty Do not attempt to repair the inverter , change the module .
it sounds like the back light has gone ...its a small long bulb that sits on the bottom of your screen. google the make and model of your laptop with back light repair. you will find video's on how to change it. ( there usualy not too bad to change )
If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen
If you're talking about your screen, it's probably the inverter going bad.
You can go to insidemylaptop.com and click on Laptops, or HP, and then inverter. These will be on the right hand side of the screen and you will see what I'm talking about. You can probably get one from ebay for just a few dollars (just search Pavilion inverter, or dv4000 inverter). They aren't hard to replace and tey give very detailed instructions. Or you might be able to buy a used or new screen for your laptop and replace it for a bit more. If you take it to a repair shop they'll probably charge you a couple hundred dollars to do it. Hope this helps
there is no filter on this model. just open it up and blow the dust out of it. if the lamp still won't light, check to see if the colorwheel is spinning. if it doesn't spin, the lamp won't light. if the lamp side screen is clogged with dust, the lamp is shot.
Yes change the inverter first it is more common problem cost arround $15 on eBay. If the screen doesn't start or if has a week light you would have to change your screen (arround $90). As it is looks the inverter prob. assuming that nobody drop the laptop by accident. replace the bulb it will be more expensive than replace the screen because it is a lot of hours to work.
If the magic focus isnt correcting the issue the convergence Ics have most likely failed. You can get the convergence repair kit for your model at www.tvrepairworld.com the kit contains the Ics associated resistors and the CD with repair instructions.
RESTART: PRESS F8 AFTER RESTART: CHOOSE: SAFE MOOD: AFTER THAT MAKE SYSTEM RESTORE FOLLOW THIS INSTRUCTION: http://laptop-driver.blogspot.com/2008/09/system-restore.html
IF NOT WORKIN AFTER PRESS F8. RESTART AND PRESS F2, YOU SHOULD ENTER THE BIOS(BLUE SCREEN) THIS IS TO TEST IF F2 WORK MEAN YOU WINDOWS XP/VISTA CORRUPT. YOU NEED TO REPAIR OR FORMAT IT. (IF YOU KNOW HOW TO REPAIR WINDOWS JUST DO IT OTHERWISE IF YOU NOT REALLY WANT TO KNOW JUST FIND SOMEONE WHO COULD DO THAT. JUST SHARING =)
The back light is bad in your monitor. This is the light source that gives light to the image on your screen so that you can see it. This is a common thing to go wrong with a laptop. You can take it to someone to be repaired or if you are handy you can buy the part and replace it yourself.
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