Re: Dell Vostro 3550 (v A01 with BQ24707) Plugged in, Not Charging



This board does not have PD3902...

Re: Dell Vostro 3550 (v A01 with BQ24707) Plugged in, Not Charging

Hello again, long month attacked and i had to build new house attachment... PU4001 aka BQ24707 is replaced.. condition changed. Device indicate with LED as it charging, device is turning on with battery and keeps running without it, but for extra i lost SDA SCL data, now its not showing any info how many mah is in battery, only percentage left..
The time i was writing that, i lost charging again, led turned off and now device is not turning on without battery.. it worked fine first minute or five, there is...

Re: Dell Vostro 3550 (v A01 with BQ24707) Plugged in, Not Charging



AC first mosfet? WITH AC CONNECTED
PU3801 on my measure unit it is shorted in both ways (CRT BOARD)
PU4002 on my measure unit it is shorted in both ways (Motherboard)
If i remove charger, no short on any mosfet (PU series)...

Re: Dell Vostro 3550 (v A01 with BQ24707) Plugged in, Not Charging



BATT1 Connector (CPU, RAM side up as on attachment)
[URL="https://www.badcaps.net/forum/attachment.php?attachmentid=267378&d=1656468081"]img[/URL]
Readigs left to right:
+
1. 2.76V
2. 2.77V
3. 3.35V
4. 3.35V
5. 3.32V
6. 0V
7. 0V
8. 0V
9. 0V
-




Attachments:
IMG_20220630_083955.jpg (1.27 MB)
IMG_20220630_084001.jpg (1.37 MB)
IMG_20220630_084016.jpg...

[B]Hello,
[/B]

i have similar problem as [url]https://www.badcaps.net/forum/showthread.php?t=37828[/url]
[I]QUOTED
-It works on charger (without battery connected-only charger)
-It works on battery (without charger connected-only battery)
-& it also works when plugged in battery & charger, but it's not charging the battery[/I]
[COLOR="DarkRed"]//Confirming, i have same issue, but problem started from charger, centre PIN is outputing 10V+ and jumping randomly 19V[/COLOR]


and..

[I]...

Re: New Members - please post your introductions here

Hi/Hello/Greetings - pick one!

My name is Thomas, im from Estonia.
Im software engineer, but im work is not related none of them.
Mainly fixing computers software base (IT technician)
But fixing hardwares is more like my hobby. Some fix is more than puzzle/riddle than other.
Actual work is related with construction and warehouses.

I found this place while googleing 48.4IE01.021 schematic. So i hope to get help, based on that schematic and my laptop problem.