Ноутбук может запускает, но ничего не показывает на дисплее.
Вентилятор спинами но для изменения скорости.
измеренной с помощью осциллографа
120ms - 5V, 360ms - 3V

материнская плата
REV: 1.4
SCALA3-15/PETRONAS-15
BA41-01763A GCE

схем или различные помощи?

спасибо
PS. жаль бедную russian язык.

Write English, please. Russian translate isn't correct.

Notebook can start by pressing power button, but there is no picture on display. Leds for charging and battery are lights up correctly.
CPU fan is working but rotating speed is pulsing, when i measured with oscilloscope on fan VDD pin there is changing voltage from 3V to 5V in periodic form every half of second ( precisely 360ms is 3V, 120ms is 5V)
When i remove CPU, fan is rotating at full speed (constant 5V).
But CPU is not bad as i tried another one.
I think that BIOS is also good beacuse i removed BIOS chip and then tried to start, notebook can't start and leds blinking briefly so i think that Micom have good communication with BIOS chip.
Something is wrong with motherboard definitely but can't find schematic for this Scala3-15/Petronas-15 ver: 1.4.

Any help is welcome.

Thanks in advance!

ps. Sorry for bad Google translation.

Write bios version from label (for example, on barcode label BA92-xxx). It is like 01QA
Connect post-card.
Is all voltage ok?

there are two bar code labels
for one, BA92-09188B and code 03QB

don't have post card, all voltages seems ok

Do dump from IC and backup it. Try bios on the mail.

I tried bios you send on email but problem is not solved.

It means, problem is not in BIOS.