Laptop motherboard hardware problems

[Uriel_no_brenon]

laptop motherboard problems

Hi there superior tech guys. I just registered with the EDAboard because I'm having a problem with an Acer Aspire 3100 laptop. This laptop fell and took some heavy damage. I was able to effect some repairs but now everything works except for all the inputs i. e. keyboard, touchpad and usb ports. Surprisingly I can wake up the laptop on keyboard but that is the only thing I'm able to do with the keyboard. USB devices flash but don't work. I know it has something to do with the BIOS and the controller chip but I have no schematic layout of the PCB to identify any of those components. Would really appreciate your expertise on this one as I think it is an economically salvageable laptop.

 

[sabeti_1990]

acer aspire 3100 motherboard

hi
how it take damage (by water or else ) ??
for your problem U just should read the datasheet of your chip {driver chip} because the problem is'nt always because of BIOS (it may those chips are damage) & for your BIOS request U can easily find it in acer web site or other site that have BIOS of motherboards

be success

 

[Uriel_no_brenon]

acer aspire 3100 motherboard southbridge

It took a really nasty fall. The part where the lcd screen connects to the laptop itself got damaged but I got it to work. I reset the bios already using the hard power off without battery and ctrl+esc at restart and it seemed to work cause the screen is supposed to become black and it did. This proves that the keyboard works but I still can't use the keyboard or the touchpad. Can't even get into the BIOS. Don't know the chip that controls the input devices because I can't identify the southbridge. Also the USBs don't work.

 

[Raju Ranjan Sharma]

acer aspire 3100 keyboard dont work

when i probe over bois pins i found many pins are pulsing withought swiching on the laptop. but power jake is inserted with dc 19v. why it is happening so

Added after 17 minutes:

what is basic proceduer for checking bios.
if i have datasheet for that perticular bios chip?
how can i confirm for bios problem?

 

[Birac]

laptop motherboard southbridge

i have a question. i have Acer Aspire 5715Z with de MB. Can you tell from the picture what tipe of capacitors and what value are those? And what else is wrong with the board?

 

[kalimuthu]

hai
it was 10 pf smd type cap.near one 0.1pf try it?:grin:

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