Acer Aspire 5600 without 3.3v on Buton Power

[ETdeMarte]

Hi, I have this quanta ZB2 motherboard I change de I/O but i still the same problem, the butom power are 0.6V.. In the I/O Pin 2 i have the NBSWON# signal with 0.6V ... but I have in the I/O the 3.3 VCC correct.

This is the datasheet, can you help me?

http://www.4shared.com/folder/IB5CwGvd/_online.html

[degutji]

Re: Acer Aspire 5600 without 3.3v on Buton Power

Dead link, but you can try reflow or reball ICH first. according diagram below your power switch signal come from that chipset ( ICH )

[ETdeMarte]

Re: Acer Aspire 5600 without 3.3v on Buton Power

This is the correct link:



In the datasheet the power switch signal come from the IO, or not ?

[degutji]

Re: Acer Aspire 5600 without 3.3v on Buton Power

I'm not so sure, but have you check completely for all pin soldered correctly ? last time I made mistake to place IO in the wrong ( direction ) pin. Make sure IO have been place and soldered correctly, no short between pin leg and measure all necessary pin in IO like RSMRST, DNBSWON, SMB_DATA..etc. There is no harm in trying

[Francisco.s]

Re: Acer Aspire 5600 without 3.3v on Buton Power

Hi, I have this quanta ZB2 motherboard I change de I/O but i still the same problem, the butom power are 0.6V.. In the I/O Pin 2 i have the NBSWON# signal with 0.6V ... but I have in the I/O the 3.3 VCC correct.

It is a strange problem, I can´t see any pull-up resistor or a capacitor in pin 2. Probably the schematic is wrong in that circuit.
Have you checked resistance in that pin?

[ETdeMarte]

Re: Acer Aspire 5600 without 3.3v on Buton Power

Yes is strange... the IO send direct voltage (pin2) to the Power Switch (SW2)... The problem can be wrong soldered.. i hope..