Привет, указанное машина не включается при нажатии на кнопку питания, я получил зеленый свет очереди и после 2 секунд вышел и снова цикл это
mbx-226 model : vpccw21fx
Вещи, которые я сделал
1 - услуги печатных плат и соединения
2 - обновление BIOS со сменным AC
3 - ес обновление со сменным AC
4 - Заменить ввода / вывода
5 - проверить аккумулятор и кнопку питания напряжение ОК
6 - перепроданы графический чип
7 - перепроданы IC зарядки
8 - замените его новым процессором
9 - изменение баран
Не 10 - не вырезано печатных плат или повреждение
Я действительно путаница, что еще, но иногда дело доходит и снова довольно, и, возможно, / /

Спасибо всем заранее пожалуйста

sorry AC=IC

Please, write english.

_________________
The fish will soon be caught that nibbles at every bait...)

Hi , the machine does not start when i press the power button , I got the green light led and device turn on but after 2 seconds turn off again this cycle for ever
mbx- 226 model: vpccw21fx
Things I do
1 - PCB services and connections
2 - BIOS update with interchangeable iC
3 - Ec Update with interchangeable iC
4 - Replace the I / O
5 - check the battery voltage and the power button OK
6 - resold graphics chip
7 - resold charging IC
8 - test new processor
9 - Change the ram
10 - no cut or damage PCB
I really mix up, what else, sometimes boot well but after 5 min not boot again and green power for 2 second and ........ , and possibly / /

Thank you all in advance please

Do you have a debug card ?
During power Check the availability of supply, 2 seconds is enough to check with a multimeter.
Behavior is similar to not detect the CPU.
May drop the laptop?.
Diagnose the quality of contact socket CPU and board, as well as a HUB..
Careful with clamp and powering.

_________________
The fish will soon be caught that nibbles at every bait...)

hi
my debug card not show any thing

i change the CPU but no result
contact CPU is OK i heat that too

Debug card does not show in the mini PCI-E.
Need to solder wires on LPC port.

_________________
The fish will soon be caught that nibbles at every bait...)

:sh_ok: good Idea
thanks for your fast responding please tell how i solder that ?
this is my 2 debug card ?

On the EC , or maybe contact point, where preferred.
Explore the documentation on your debug-kart, and EC.
LAD3, LAD2, LAD1, LAD0, CLK, RST, FRAME, +3v & GND.

_________________
The fish will soon be caught that nibbles at every bait...)

OK that's good thing
1-but for every laptop i must do that ????

2-i thing no need to debug because i found problem the +5VRUN is restarting connect and disconnected i found the ic who make this voltage(SN060809RHBR) on ic voltage is ok but in some use line is disconnected for example on touch pad is restart or on the TPS51218 is restart or on F12

see this schematic please ...

http://kythuatphancung.com/download/son ... cs.html?dl

i don't know how i find the faulty ??

i found this item LAD0,LAD1,LAD2,LAD3,3.3V,GND,FREAM

but where RST,CLK ???

You can use CN23 connector (page 38).

good only must solder ? isn't any universal connector??

You have a pins on your debug card: fra, lad1, lad2, +3.3, rst etc. And you have to solder those pins to the motherboard.

i thing no need to debug because i found problem the +5VRUN is restarting connect and disconnected i found the ic who make this voltage(SN060809RHBR) on ic voltage is ok but in some use line is disconnected for example on touch pad is restart or on the TPS51218 is restart or on F12

see this schematic please ...

http://kythuatphancung.com/download/son ... cs.html?dl

i don't know how i find the faulty ??

today when i get the
PQ23 out from board mainboard work without restart but when i change that no result and restart again i thing all problem is from cpu PWM circuit but how i check ?

Delete items not needed, the board is in a stupor, so does not turn off.
It is only necessary to verify that all power sources at run time, it is desirable oscilloscope, P-GOOD, batt-cmos.
Check the possible closure of the wire LVDS, USB, USB-webcam.
From what history laptop came in for repair?
Ask the host laptop, maybe it will give answers to the search direction.
If the cooling system was blocked, possibly faulty graphics chip.

_________________
The fish will soon be caught that nibbles at every bait...)

thanks
the trouble in PWM circuits some fet SIR428 i need to change ..can i change fet with another fet without match number like pc mainboard ?????

( in pc mainboard every fet response when i change without match ...

today i will reball GPU

Learn datasheets elements.
I think you need to seek help from a colleague with more experience who are close to one ..You have enough experience to diagnose.

_________________
The fish will soon be caught that nibbles at every bait...)

reball GPU no result .
i tired from this ;laptop i think rollback all thing to customer
no idea ???

Есть подобный аппарат PCG-61412V на MBX-226, изо выдает только на внешку если включить все переключатели. С подсоединенным шлейфом включается и тут же выкл. Где-то коротит шлейф, поделитесь, пожалуйста, незапароленной схемой платы.

Решено. Проблема была в ШИМ питания видюхи PU24. Заменили на 551212