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Re: Backlight doesn't work. How much to replace? Can I...
Backlights are not generally expensive but I wouldn't suggest you repair it yourself unless you've opened up pc's before....you'll need a service repair manual to do it yourself as, at the very least, you'll have to remove the screen bezel (usually 4 screws) and then detach the screen from the hinges (again usually 4 screws).
I would suggest getting a couple of quotes from repair centres.
As far as backlight goes it either works or doesn't (like a light bulb) sporadic use usually means a bad connection rather than a blown light but it would still need to be opened up to check the connections...again needing a service manual and a technical person
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LCD panel,cable or inverter are faulty.Inverter and CCFL backlight check is shining a torchlight across the screen to see if there is any image in the screen.This doesn't isolate either problem but can provide testing options.If it is an LED panel no option but to replace if backlight issue.If you don't have spare parts to test with you are stuck though.If you are a novice in repair it could cause more problems by damaging/breaking parts in attempts to fix.
Buy a replacement power jack, Jacks for most models are available on EBay
Using soldering iron, and other required tools, remove old jack, then clean the connections, and solder new jack in place.
For what it is worth, I opted to buy a replacement motherboard, (also available on EBay) and replaced it (About an hour job for anyone familiar with working on a portable system.) Generally, if you don't do electronics soldering it is not recommended for novices (I'm great fixing computers, but I **** at soldering)
It is a very common problem caused due to loose connction from the MCU to the Screen. MCU ( main control board ). Also check the hinges. They sometimes crack. Replace them in case of hinge problem. Thank you.
you can try to fix this yourself but i suggest you take it to a trusted repair facility. there could be more than one issue with the backlight problem. as far as the DVDr drive those are easy to replace. Try ebay for your parts, but the screen will run you about 100 bucks and the dvd 50-80 depending on which one you want or need. be mindful that if you dont select the exact model you will need to pull the tab off the front of your dvd burner to fit the new one to get a cosmetic fix. as far as your issue with some backlight on opening, there could be issues with the inverter or cabling from motherboard to lcd. if you are not familiar with doing this, i would not suggest it, for one the opening of the unit is touchy and i have seen how easy it is to break the top panel screw mounts off requiring you to buy new top covers for the lcds, but if you are daring and wanna try...go at it. lol...but i warned you....