Acer ASPIRE 5520 no display

[rtstorm]

Hi, i got acer aspire 5520 that wont turn on, fan spin for 2-3 sec then reboot. No picture display.

I reflow the nVidia chipset, then laptop turn on but still no picture on LCD. I plug in the external VGA and it worked.

I check LCD and flex cable on another laptop and it was OK.

I have schematics but dont know what to check.

[innocentforeign]

Re: Acer ASPIRE 5520 no display

check the num lock and caplock if working that's mean display working I think you should check again properly flex cable and lcd

[rtstorm]

Re: Acer ASPIRE 5520 no display

yeah i check again and falex cable is failing.

Thank you

[innocentforeign]

Re: Acer ASPIRE 5520 no display

reflow again MCP67 NVidia chip then, see what happen.

[masud]

Re: Acer ASPIRE 5520 no display

if it doesn't work after reflow (with good lcd and ribbon) then check some transistor nearby the lvds. also check the lvds pins are all ok,

[rtstorm]

Re: Acer ASPIRE 5520 no display

I find that the flex ribbon is bad, externanl vga is ok. I need to replace flex cable

[Miguel]

Re: Acer ASPIRE 5520 no display

hello! your problem is in mcp67, becare the mcp chip...this chip is burning reflow or reballing is poorly done

[inspirim]

Re: Acer ASPIRE 5520 no display

il chip MCP.. è in cortocircuito