Re: dell n5110 no charger detect
shall i update the bios ?????
shall i update the bios ?????
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Re: dell n5110 no charger detect
What confused me was that 2.8V from DC jack...
I thought it's shorted, either the board,jack or something in charger circuit...
Also thought that you tested laptop with battery & charger connected at the same time...
Anyway...
Could you check resistance @ PL4001 & post all voltages of PU4001?Comment
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Re: dell n5110 no charger detect
what should be the current on pq4001 pin 4 and 5 no currentComment
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Re: dell n5110 no charger detect
I'm not 100% sure, but in this design the pq4001 is a kind of charging switch...
It will push voltage to PU4002 gate if there's something wrong(or if it's not getting PWR_CHG_ACOK)...
PU4002 is P channel, so it will switch off when gate voltage is similar to S & G voltage...Maybe I'm talking shit, but it does make sense, therefore these 2 should be OK...Last edited by loser18; 05-26-2014, 11:18 AM.Comment
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Re: dell n5110 no charger detect
I would move the attention to PU4001...
There are many of pwrchrg voltages in this regulator...
Ok...
Digged a little bit in datasheet...
This regulator is also Enabling & Disabling charging...
First you need to check:
-PIN7
-PIN2
-COMPARE PIN 22 & PIN 15
-PIN21
-PIN3Last edited by loser18; 05-26-2014, 11:33 AM.Comment
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Re: dell n5110 no charger detect
610 ohm @ pl4001 and pu4001
1 19v
2 2.6
3 2.6
4 5.8
5 6
6 0
7 0
8 2.5
9 2.5
10 0
11 1.1
12 3.3
13 3.3
14 0
15 2.5
16 0
17 0
18 0
19 19
20 19Comment
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Re: dell n5110 no charger detect
pu4001Attached FilesComment
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Re: dell n5110 no charger detect
Are you sure you've checked the right IC???
According to schematics it should be BQ24745...Comment
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Re: dell n5110 no charger detect
Think the schematic is not right...
What's the mobo part number?Comment
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Re: dell n5110 no charger detect
10245-2
48.4ie01.021
dq15 intel mbComment
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Re: dell n5110 no charger detect
And what's the PU4001 number?Comment
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Re: dell n5110 no charger detect
Attached FilesComment
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Re: dell n5110 no charger detect
cant read properly its like bq....Comment
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Re: dell n5110 no charger detect
I've found 48.4ie01.021 schematics, but's an AMD...Comment
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Re: dell n5110 no charger detect
cant read properly its like bq074ti..Comment
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Re: dell n5110 no charger detect
sorry it is bq07aComment
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Re: dell n5110 no charger detect
bq07a pin current
1 19v
2 19
3 0
4 0
5 0
6 2.5
7 0
8 3.3
9 3.3
10 1.1
11 0
12 2.5
13 2.5
14 0
15 0
16 6
17 5.8
18 2.6
19 2.6
20 19Comment
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Re: dell n5110 no charger detect
Why are the voltages different now???
It's BQ24707A...
Leave it on charger for 2 minutes & I think you'll get the same voltages as in your 1st post...
I think it's in Over Current Protection and therefore charging is disabled...Last edited by loser18; 05-26-2014, 01:12 PM.Comment
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Re: dell n5110 no charger detect
The IC cannot maintain the input current level if the charge current has been already reduced to zero. After the
system current continues increasing to the 1.66X of input current DAC set point (with 2.5ms blank out time),
IFAULT is pulled to low and the charge is disabled for 1.3s and will soft start again for charge if ACOC condition
goes away. If such failure is detected seven times in 90 seconds, charge will be latched off and an adapter
removal and system shut down (make ACDET < 0.6V to reset IC) is required to start charge again. After 90
seconds, the failure counter will be reset to zero to prevent latch off.
Think the IC is dead / shorted...Or some cap around shorted...
It's a hardcore case without schematics...Last edited by loser18; 05-26-2014, 12:51 PM.Comment
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Hello, everyone!!! Happy New Year to all!!!
When I turn on the laptop, the warning appears: You have attached an undersized 0W adapter and blah, blah, blah... The bios says that the adapter is not connected and the battery status is excellent.
This laptop has all the voltages at the input, and the charger IC is also normal. There is 3.3V at the PS_ID and I have already tested it with another adapter, also original. The adapter detector also seems to work normally. I am suspecting the SIO. What do you think?
On my portable oscilloscope there is a PS_ID signal.... -
Hello,
Dell Latitude 5420 P137G
Board: LA-K491P REV A01
I have received this laptop which was described as "does not power on or accept charge." Battery shows no sign of charging when charger is plugged in, nor does the board show any signs of life when battery is unplugged and charger is plugged in. No light from the LED at all or any other indications of activity.
Board seems to have no shorts, all power rails are fine and show high resistance.
When charger is plugged in, voltage is present in 3.3V rail but absent in others.... -
Hi, I have a Dell Inspiron 7567 LA-D993P that I've just got running.
There was corrosion around PU1503 which shorted PC1518 & blew PL1504. (Reference pictures attached)
I've replaced PC1518 & PL1504 & the laptop is now running however I now have another issue.
Here are the tested scenarios:
1. With the laptop running on battery, I plug in the 150W charger & the charger shuts off (no LED, protection mode) but the laptop remains running on battery.
2. With the laptop off, plug in charger (LED says on) & the front charging... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
Hello, I received this laptop with the following condition: When I turn it on, it shows the ALIENWARE light and the Alien button lights up, then it does not show an image and it restarts constantly, as the customer had already informed me that the battery was dead, I connected an original charger that I had it for testing, the machine turned on normally and I was able to enter Windows without problems, after a while of testing I noticed that it is very slow (like a Cyrix 425...), and after performing a CPU test the frequency is
below normal, as if it were operating in an extreme energy...
Comment