dell inspiron mini 10 cases

[bowor]

dell inspiron mini 10 cases. do not want to be on. it's going through? I already did flash the bios, changing power ic, changing charger ic, but still it does not want to be on. but plug in the battery going on. roughly where the problem is? thank you

[Francisco.s]

Re: dell inspiron mini 10 cases

dell inspiron mini 10 cases. do not want to be on. it's going through? I already did flash the bios, changing power ic, changing charger ic, but still it does not want to be on. but plug in the battery going on. roughly where the problem is? thank you

Have you got the schematic?, if so, post it.

[spidey]

Re: dell inspiron mini 10 cases

if starts with battery and doesnt starts whithout battery, that one doesnt detect VIN check acok, acin etc.. check Vindetect circuit, if exists Lm339, 393 chips offen die or a component around.

[bowor]

Re: dell inspiron mini 10 cases

schematics dell inspiron mini 10

[bowor]

Re: dell inspiron mini 10 cases

conditions during take-battery: voltage alw 3/5v normal, normal voltage vcc ec. but the voltage is 3/5 vs none. where is the control voltage vs? maybe a problem at embeded controler (ec). help me give suggestion!!! thank you

[bowor]

Re: dell inspiron mini 10 cases

conditions during take-battery: voltage alw 3/5v normal, normal voltage vcc ec. but the voltage is 3/5 vs none. where is the control voltage vs? maybe a problem at embeded controler (ec). help me give suggestion!!! thank you

this schematics vs

[cyberhack]

Re: dell inspiron mini 10 cases

check the usb's for short

[bowor]

Re: dell inspiron mini 10 cases

check the usb's for short

no short in the usb, or around usb

[bowor]

Re: dell inspiron mini 10 cases

I've change ec, but the problem remains the same. if anyone can add this problem?

[bowor]

Re: dell inspiron mini 10 cases

if starts with battery and doesnt starts whithout battery, that one doesnt detect VIN check acok, acin etc.. check Vindetect circuit, if exists Lm339, 393 chips offen die or a component around.

hi spidey, how to chek acok, acin? initially in pin voltage battery no. after changing ec out voltage. but still do not want to be on.

[dj_ricoh]

Re: dell inspiron mini 10 cases

how to chek acok, acin?.

you need to find the isl charging chip.
i used my old probe and i got them sharp so i can measure small connectors from chips like this.

[dj_ricoh]

Re: dell inspiron mini 10 cases

find PU3 on the mainboard
thats the main charging chip.

[alihomee]

Re: dell inspiron mini 10 cases

any body have a solition for this problem.i am also faceing same with battery it runs fine but it didt charge battery without battery when power button pressed it shows led light for a while then again turns off.i also tried all which is mention above .i have three units with same problem

[alihomee]

Re: dell inspiron mini 10 cases

any body

[alihomee]

Re: dell inspiron mini 10 cases

no solution?

[Claudio Silva]

Re: dell inspiron mini 10 cases

Hello friend, lemme try to help.
Ur problem is that the Motherboard doesn´t regonize the the DCJack´s pluged in, so u need to follow the sequence to find the fault.
The sequence is:
1º
Jp53 pins 1, 2 = 19v, follow de signal VIN and measure the coils PC1, PC2, PC3 and PC5 check for short.


2º
The VIN signal (tension i know) goes to charge IC page to create B+ signal, trough 2 Mosfets (PQ2 and PQ3). In this pins 5, 6, 7, 8 (Drain of PQ3). The gate will recieve a low signal from pin 4 /ACDRV. And finally the board will get B+ signal from DCJack


3º
The board will need the confirmation that the DCJack´s plugged in. This data goes to EC in form of ACIN. The comparator pu1A will recieve on pin 1 19v from de DCJack, pin 8 nearly 19v, pin 2 nearly 3.3v, pin 4 gnd 0v.
When PU1 get voltage on pin 2 and 3 on pin 1 the board will have de signal ACIN, that indicates EC that the DCJack´s plugged in and it´s working.


This signal goes to EC


Follow all the sequence and post the results