Hi. I have a problem with Inspiron 15. It starts up but without picture on screen only 3 x beeps.
Beside VCC_CORE (PU4701 resistance 150Ω) and VGA_CORE(PL8202 and PL8201 resistance 11Ω) all other voltages are present.
PL4401 - 2.8V (2MΩ)
PL4801 - 1V (76Ω)
PL4501 - 5.2V (120kΩ)
PL4502 - 3.3V (4,8kΩ)
PL4902 - 1.3V (380Ω)
I've checked also ISL95813HRZ it has voltage only on pins:
12 - 5V
13 - 4.8V
18 - 1V
19 - 1V
20 - 0,25V
There is no signal from H_VR_ENABLE so i understand CPU doesn't start this Single Phase Core Controller.
Anything else what I can check?
Beside VCC_CORE (PU4701 resistance 150Ω) and VGA_CORE(PL8202 and PL8201 resistance 11Ω) all other voltages are present.
PL4401 - 2.8V (2MΩ)
PL4801 - 1V (76Ω)
PL4501 - 5.2V (120kΩ)
PL4502 - 3.3V (4,8kΩ)
PL4902 - 1.3V (380Ω)
I've checked also ISL95813HRZ it has voltage only on pins:
12 - 5V
13 - 4.8V
18 - 1V
19 - 1V
20 - 0,25V
There is no signal from H_VR_ENABLE so i understand CPU doesn't start this Single Phase Core Controller.
Anything else what I can check?