Re: acer travelmate 5520 - Blinking Power adapter

Hi,

Don't know this laptop but got similar issue with a acer aspire 5740g, when you plug the power adapter the power adapter led stop (i think power adapted go in protection mode).

There was a short in the Laptop DC input (you can check with a multimeter if you have short circuit).

The issue finally was a protection diode in short circuit.
not exactly the same issue as you but it could maybe help.

Regards.

Re: Acer Aspire 5740g dead (no power - no lights)

Hi,

Thanks for the schematics. Someone asked me if i could repair his 5740g.
The prob was :
Was working fine with battery but the charger didn't work, when you plug it in, the power adapter led is not illuminated anymore. Quick check with a multimeter and the DCIN of the laptop was in short circuit. (he tell me that he try to power the laptop with a wrong adapter before he got this prob)

After some research in the schematics i suspected D10 (protection Diode), removed it and now it's working...