Need bios dump ACER Aspire One AO1-431 (charging problem)

[bumper1]

I'm looking for dump
ACER Aspire One AO1-431
INVENTEC CALTECH 6050A2767601-MB- A01

There is MX25U6435F, working on 1.8V; My EZP2010 with "1.8V adapter" doesn't recognize it correctly. I wonder if I can use Winbond 25Q64FWSAQ (also 1.8V) with new dump? This one works fine with programmer.

Laptop is working but has problem with charging ( 2 oryginal chargers, 4 baterries). I replaced charger chip - same thing. I want to try bios.

[SMDFlea]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Try this one .

[Francisco.s]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Laptop is working but has problem with charging ( 2 oryginal chargers, 4 baterries). I replaced charger chip - same thing. I want to try bios

Check voltage (pulses) in EC_SMB1_CLK and EC_SMB_DATA.
If no voltage on both signals, check readings in diode mode.

[bumper1]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Thanks SMDFlea. This dump works, windows is working, but for my laptop still no charging.

Check voltage (pulses) in EC_SMB1_CLK and EC_SMB_DATA.
If no voltage on both signals, check readings in diode mode.

Both signals are about 3.2V. I don't have oscilloscope.

[SMDFlea]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

upload the schematic if you have it please.

[bumper1]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

I did some measure on BQ24725 pins:
3: 19,2V
4: 25,0V
8: 3,2V
9: 3,2V
11: 2,4V
12: 2,3V
13: 2,4V
15: 0V (???)
16: 5,9V
17: 5,8V
18: 2,4V

CN6050 with battery (I have 4 used batteries-all the same):
pin 1-2: when I plug power supply - it's 2,55V about 5 seconds, jumps to 12,5V; stays 7s and go back to 2,55V and stays like that (4 batteries -same thing)
3: ground
4: 3,2V
5: 3,35V
6: 3,35V
7: 0,13V (na każdej baterii)
8-9: ground

I refreshed soldering on charger pins and elements around it- didn't help.

[SMDFlea]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Check if C6050 and Q6012 gets hot when you plug the charger in, test voltage on pin 4 Q6012 when you plug the charger in , for 15 seconds

[Stevie2001]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

test
U6600
U6000
and all the mofsets near it

[smali]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

check Q6010 or Q6011 may be short...

[SMDFlea]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

test
U6600
U6000
and all the mofsets near it

U6600 has nothing to do with the charging circuit.

[bumper1]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Check if C6050 and Q6012 gets hot when you plug the charger in, test voltage on pin 4 Q6012 when you plug the charger in , for 15 seconds

Nothing is hot (after few minutes charger + battery). Q6012 Pin 4 (gate): 2,55V about 5 seconds, jumps to 12,5V; stays 7s and go back to 2,55V and stays - exacly like pins 1-2 in CN6050.

check Q6010 or Q6011 may be short... - they looks ok
U6600 should be ok becouse windows is running.
I already changed U6000 (charger) to another (used one- mayby i find another)
I also think about replace q6000 AON7934 but is hard to buy. I wonder what replacement I can use.

[SMDFlea]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Can you test these resistors, R6053 (220K) , R6052 (33) , R6050 (33) , R6051 (1K) , R6055 (10K) .

[Stevie2001]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Check if C6050 and Q6012 gets hot when you plug the charger in, test voltage on pin 4 Q6012 when you plug the charger in , for 15 seconds

with normal charger nothing will get hot and if it did it will blow up.

Charger has protection you know that otherwise if anything was shorted inside laptop then charger will still inject current

[jatoi]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

Try this one .

thanks

[red1980]

Re: Need bios dump ACER Aspire One AO1-431 (charging problem)

good luck