Re: ACER E5-574G shuts down after 1 second

hi, thank you for your answer.

MB code is: DA0ZRWMB6G0 REV:G

ram circuit has no corrosion, ram sticks seem good.
+1.35VSUS is present, but I'll check again with oscilloscope and RAM present.

Re: ACER E5-574G shuts down after 1 second

Update:
I checked the resistance between GND and +VCCGT and it was 0 ohm.

This morning I desoldered the PU6 and PU7 coils and resistance at +VCCGT was around 6 ohm (which seems reasonable).

At the other side of the coil, PU7 seemed OK and PU6 seemed KO with 0 ohm to GND.
I desoldered PU6 and expected to find a short between its output and GND but this was not the case.

I resoldered everything back in place and the short was not there anymore.
However, the problem is still there,...

Dear all,
I'm trying to repari an ACER E5-574G that shuts down after 1 second.

The notebook shows the charging light when connected to the power adapter.
When powered on the fan starts spinning and the led indicator is on, but after just one second a click sound (even when all mechanical components are disconnected, including the fan) can be heard and the notebook shuts down.

When the notebook is powered on without RAM banks, it stays on indefinitely (USB ports are powered).

I tested the PUs and it seems that PU6&PU7 outputs (+VCCGT)...

Re: Dead Sony VAIO Duo 13 (MBX-281)

Hi, thank you for your reply!
I further analyzed the situation.

Today, with battery attached, the behavior of the motherboard was (somehow) a bit different.

Infact, the "hot" components never become hot, and sometimes it was not necessary to simulate the power button to make 5V and 3.3V show up. When this was not the case, 5V and 3.3V were present right after the power cord was connected, and then went to 0V in some seconds.

I checked the voltages at the two ICs (image attached)....

Hi everyone,
I just bought a dead Sony VAIO Duo 13 ... and I'm willing to restore it to its past glory!

The device has been already opened, and a clear sign of this is a broken flat cable that connects the power switch and the charge led to the motherboard.

Unfortunately this seems to be just one of the laptop's problems, here's my troubleshooting.

I disconnected everything from the motherboard (even the main battery), except the fan.

Charger's output is 10.5v. This voltage is present at the motherboard, and passes the first fuse.
...

Re: New Members - please post your introductions here

I'm willing to join and (hopefully) contribute to this community!
Greetings from Italy!