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To explain a BGA surface mount; The older Intel Pentium 4 processors that used a Socket 478 processor socket, had contact pins on the bottom of the processor.
A chipset using the BGA surface mount does not have contact pins. It has Solder Balls in place of the pins.
There is no socket with socket holes. There are Copper Pads.
The chipset is set into place with the Solder Balls lining up on the Copper Pads. Then a specified temperature, and specified length of time is used to melt the solder balls. This solders the chipset to the Copper Pads, which in turn solders the chipset to the motherboard.
Excess heat, due to the laptop is overheating, can partially re-melt the solder connections made, and cause a poor contact.
May be caused by the laptop is dirty inside, and the cooling capacity of the cooling components, has dropped tremendously.
May be due to a poor cooling system design in regards to the graphics chipset.
The cooling system may be adequate enough to keep the Processor within it's specified temperature operating range, (Thermal Limit), but NOT adequate enough to keep both, Processor AND graphics chipset cool.
Using the HP Pavilion dv9000 series of Notebook PC, this video gives information on the problem in more detail,
Aspire 5520 has LCD Display. The
screen displays becomes dark/ dim if there is no backlight. There
are two parts responsible for lighting the display. First is the CCFL
(Cold Cathode Florecent Lamp), which is the back light and the second
is the Inverter board, which provides high voltage to the CCFL. These parts are inside the LCD screen. Either
of the parts may be faulty or in some rare cases both. Also, the video data cable may be loose or faulty, which can be identified only after opening the top cover. So,
my advice is that you get it properly checked by any professional for
replacement of Inverter or CCFL.
Hope it helps! Good Luck! Thanks for using Fixya! CreativeTECH
If you are going to DIY and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed ACER monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also.
Black screen is a number of things.
*If you`re laptop turns on but you see no display at all..does`nt even post,Then its the GPU on you`re motherboard thats faulty & will need replacing. Or
*Its you`re screen inverter which is a small circuit board located inside on the bottom of you`re LCD screen which needs replacing.Theyre cheap and not expensive.
*Do a test for example : Connect you`re laptop to a PC monitor Via VGA to VGA cable.Connect to youre laptops PC input to your monitor PC input,Then turn you`re laptop on.If it displays on you`re monitor then its the problem with your LCD laptop screen,Or the inverter needs replacing.
If theres no display on the pc monitor then its You`re motherboard onboard GPU (graphic Card) - Which you will need to replace the motherboard.
blorip, You will need to prove that x193w lcd monitor also does same when connected to different "known-good" pc!! Learn how to tell the difference between a "black screen" and a "black n blank screen" with use of a bright flashlight held 1 inch from lcd panel and at different angles. Yes, there is a difference!!! If problem proves not to be PC software, then must be problem with ccfl back-lit lcd display. You should view DIY repair and disassembly video clips at YOUTUBE before attempting to do any repairs to your Acer unit. Read some stuff in my fixya profile( pages 30 and up) for more info and links. Also view fixya profiles of "budmrtn" and "buddymc" . Follow links you find in profiles. Good luck with the repair. 12fixlouie
Check your connections to the PC. Make sure that they are nice and secure. If there is a resolution problem setting it should display the boot process and then go blank after starting the operating system.
Did you try to connect to external monitor see if you get picture?
If does, You need to look very close the laptop LCD if you have seen any shadow pictures? if does your Inverter or Bulb is Gone. If no pictures on external, Your graphic card is done.
franh, Typical of a lcd/fpd monitor! There is nothing you or hundreds of others can do to repair it all by yourself. I have repaired 3 monitors and helped tutor 2 others on fixya with their monitors. All had same exact symptom as your monitor. I need you to do a simple test for me. With failed Acer monitor near to your Fully Booted PC with a known good desktop being displayed on back-up monitor, quickly swap out the monitor cables from the back of the PC. Keep touching the CTRL key on you keyboarb every 30-50 seconds to keep the PC from sending out sleep mode command to monitor while doing the reconnect of acer to your PC monitor output port. Make sure the Acer also is connected to a live wall outlet/power strip. Turn on the Acer and note what happens. If screen shows a sharp clear image for a second, then goes black, do the following. Get a bright flashlight and shine it on the screen from a distance of 1 or 2 inches and tell me if you can see the desktop display. get back to me with your observations. I'm louie12fix on fixya or lmistyrel@ aol.com.
Have you used the Fn button on your laptop and changed the video display Icon on the Blue Function keys. You need to change the display wait a few seconds for it to take affect. There are several modes try them all so you know how to use them.