Hello,
on this laptop acer aspire v571p the led of the power indicator blinks blue for periods of 1s lighted and 3s off after switch on and this indefinitely.
i tried the hard reset, cmos reset, changing the ram without results.
in order to reach the cmos battery i disassembled the laptop and did several mesures with my multimeter.
The 19v, 5v, 3v are well established after the chip 5v-3v. the following signals : 3d3v_aux_kbc (which supplies the sio chip) and 3d3_s5 are well established also.
but the signals: 3dv3_s0, pw_slp_s3# and pw_slp_s4 oscillate at the same rythm that the power indicator.
for the moment i didn't succeed to find what is the reason of this oscillation and what is the defectuous component.
i tried also with an external screen (my tv screen with hdmi port) but nothing new although i heared the connection and deconnection of the hdmi interface at the same rythm that the power indicator.
the supply of the bios chip is correct.
perhaps it's a matter in relation with the fact that my touch screen is cracked, and now is not operational?
is there somebody who could help me or give me more indications.
Thank you in advance for your answers.
jean luc ferre
on this laptop acer aspire v571p the led of the power indicator blinks blue for periods of 1s lighted and 3s off after switch on and this indefinitely.
i tried the hard reset, cmos reset, changing the ram without results.
in order to reach the cmos battery i disassembled the laptop and did several mesures with my multimeter.
The 19v, 5v, 3v are well established after the chip 5v-3v. the following signals : 3d3v_aux_kbc (which supplies the sio chip) and 3d3_s5 are well established also.
but the signals: 3dv3_s0, pw_slp_s3# and pw_slp_s4 oscillate at the same rythm that the power indicator.
for the moment i didn't succeed to find what is the reason of this oscillation and what is the defectuous component.
i tried also with an external screen (my tv screen with hdmi port) but nothing new although i heared the connection and deconnection of the hdmi interface at the same rythm that the power indicator.
the supply of the bios chip is correct.
perhaps it's a matter in relation with the fact that my touch screen is cracked, and now is not operational?
is there somebody who could help me or give me more indications.
Thank you in advance for your answers.
jean luc ferre