Sony SVF11NA1GM brak obrazu

Płyta główna: 1P-013BJ00-8011 REV 1.1
CPU:SR1SE
Laptop po wymianie pasty przez klienta przestał się uruchamiać.
Po resecie BIOS wstaje do ok 320mA i stoi. Brak niskich rezystancji. Napięcia wydają się poprawne. Bios przeprogramowany znalezionym wsadem od SVF11NA1GP - bez zmian.
Matryca się nie polaryzuje. Klawiatura się podświetla, ale CAPS Lock nie działa

Hello!

Measure the voltages to ground on all coils, when the machine is turned on.

Measure the power consumption (in mA) of the board, when the machine is turned on with old (original) and with new BIOS dump.

I get same behavior on old and new BIOS. 250mA

At first post you specified the power consumption 320mA and now you have a different power consumption - 250mA. Which one is correct?

TripleH ha scritto:Po resecie BIOS wstaje do ok 320mA i stoi.

TripleH ha scritto:I get same behavior on old and new BIOS. 250mA

320mA when keyboard backlight is on.

Check, if the temperature on all RAM chips is about the same, when the machine is turned on.

RAM chips are stone cold...

Try to reflow the APU.
If it does not change anything, replace it.

After APU reflow laptop starts but it hangs after couple of seconds. Is the APU bad?

Try to reflash the BIOS chip again with old (original) dump.

In every case the APU is bad and needs to be replaced for a permanent repair. Feflow/reball is usually only a temporary solution.

With old BIOS same behavior. But i`m quite sure it`s APU. When it`s cold it works longer. After warming up it hangs allmost instantly. Customer didnt want to repair it. As always appreciate your help.