Re: GA-M51GM-S2G neither onboard graphics nor PCIE slot work

Hi
I have a motherboard Intel D945gcnl with similar problem. The motherboard have no display with built in graphics but pcie gfx card works fine. I have tested some components on board but unable to detect the fault. I am unable to find schematic of this motherboard. please suggest something to debug this board..

Vakakush

Re: Acer E1-531 won't start

Thanks a lot Th3_uN1Qu3 for your reply.

i have removed this capacitor from motherboard PCB and this badcap is dead (continuity test => short). I have also tested P2 and P3 for continuity from GND and now there is no connection from GND to these two points
Now i can finally solder new MOSFET and Capacitor without any doubt. I have already ordered replacement MOSFET but i am a bit confused about the capacitor.
I am purchasing this capacitor online and i am not aware about the dielectric material that is used in...

Re: Acer E1-531 won't start

sorry for a typing error.... the question is
Could someone please tell me. if i am not wrong the correct value is 4.7microfarad 0805size 25volt 10% tolerance.
what does this 6-K stands for?????
Could someone please help me with locating a exact replacement capacitor online.

Thanks
Vakakush

Re: Acer E1-531 won't start

update 2

While inspecting the motherboard i encountered this ceramic capacitor. Yellow one on the left side ... Is it broken?
[url]http://s28.postimg.org/abzjtd4rh/2015_07_31_130710.jpg[/url]

Capacitor value on schematic is 4.7U_0805_25V6-K

Could someone please tell me. if i am not wrong the correct value is 4.7microfarad 0805size 25volt 10% tolerance.
what does this K stands for?????

When a ceramic surface mount capacitor dies does it shows zero resistance or no conductivity or any of them...

Re: Dell E6410 no charging need help urgently. . .

Test these MOSFETS PQ30 PQ31 PQ32
Components on Page 51
check pin 22 ,2, 13 of 8731 IC
check charger_src for 18volts
check gate of PQ30 for volts also test PL14 for volts

Re: Acer E1-531 won't start

Update

Today i have removed the MOSFET (it is dead) and only P3 shows continuity to GND is it normal....

Please reply
Vakakush

Re: Acer E1-531 won't start

Hi
My laptop have Compal la-8241p motherboard and it won't boot. The moment i connect power adapter the adapter turns off. I am unable to boot laptop with power button. There is no sign of life. There is a short circuit somewhere and the moment i connect the adapter's internal connector connected on motherboard i can see a small spark. I have tested some MOSFETS on motherboard and one of them is short. Its labeled as AO4409.

here is the link to schematic
[url]https://cdn.badcaps-static.com/pdfs/787313ea671d89d7cf49d6a856347d78.pdf[/url]...

Re: New Members - please post your introductions here

Hi
i am very happy coz i have become a new member of this forum. i have used this forum content to fix some motherboards earlier.
Thanks to all for their support and work