em análise Acer E1- 570G, Z5WE1 LA-9535P enciende y se apaga

[jolinpc]

Hola a tod@s!

Tengo un acer Aspire E1-571G con placa base Z5WE1 LA-9535P. Al pulsar encendido, enciende y a los 5-10 segundos se apaga.

Tras realizar mediciones en las bobinas, todas estan ok, excepto en PL701 que tengo 0V. Tras comprobar resistencia con respecto a masa, tengo 1 Ohm. Tratándose de GFX_CORE, creo puede ser normal.

Comprobando PU701, el pin 12 VSSSense está a 0 ohm con respecto a masa. ¿Es normal y correcto?

 

Leyendo en otro hilo de otro compañero, éste tuvo problemas en U4. En U4 PLT_RST# sube 1 segundo a 3V y luego cae a 0V antes de apagarse, y  BUFO_CPU_RST#, sube a 1V y cae a 0V.

 

¿Alguna ayuda?

 

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Hello everyone!

I have an acer Aspire E1-571G with Z5WE1 LA-9535P motherboard. When you press on, it turns on and after 5-10 seconds it turns off.

After taking measurements on the coils, they are all ok, except for PL701 which has 0V. After checking resistance with respect to mass, I have 1 Ohm. For GFX_CORE, I think it may be normal.

Checking PU701, pin 12 VSSSense is 0 ohm with respect to ground. Is it normal and correct?

Reading in another thread from another user, this one had problems in U4. On U4 PLT_RST # goes up 1 second to 3V and then goes down to 0V before it turns off, and BUFO_CPU_RST # goes up to 1V and goes down to 0V.

Some help?

[LEONTEC]

@jolinpc creio que não seja esse o problema da sua placa! Você tem sim um possível curto no estado s3 ou s1. Verifica as tensões que sobe nas bobinas quando você pressiona o botão power, assim podemos seguir quais tensões sobe quando a placa liga por esse tempo! 

[jolinpc]

Hello, thank you for your response and sorry for the delay in responding. I have not been able to do it before, due to the situation in our country.
I have soldered the components to leave it in the initial state.
Measurements have been made without a connected display, battery, or HDD. Memory and CPU only.
I have verified that, depending on where the memory is placed, the behavior is different.
Attached measurements for before pressing the power button, and after pressing it.

 

PL302 (BATT+)  .... Before 3,1V ..... After 3,1V

PL502 (+1.5VSDGPUP) ... Before 0V ..... After 1,5V

PL602 (+1.5VS_VTTP) ... Before 0V ..... After 1,07V

PL802, PL804 (+VGA_CORE) ... Before 0v ..... After 0,90V

 

PL704 (+CPU_CORE) ... Before 0V ..... After If the memory is placed in DIMM1 the voltage is stable 1,1V until it turns off. If the memory is placed in JDIMM2 the voltage is unstable between 0.85V and 1.05V.

When the memory is placed in JDIMM1 it turns on and off 1 - 2 times and then you have to press the power button again. When in JDIMM2 it stays on.
In any case, without sending a signal to the screen

 

PL701 (+VGFX_CORE) ... Before 0V ..... After 0V

PL402 (+3VALWP) ... Before&After ... 3,3V

PL403 (+5VALWP) ... Before&After ... 5,1V

PL501 (+1.5VP) ... Before 0V ..... After 1,5V

 

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Hola, gracias por tu respuesta y perdona por la tardanza en responder. No he podido hacerlo antes, debido a la situación de nuestro país.
He soldado los componentes para dejarlo en el estado inicial.
Las mediciones han sido realizadas sin display conectado, ni batería, ni HDD. Solo memoria y CPU.
He comprobado que, dependiendo de donde esté colocada la memoria, el comportamiento es diferente.
Te adjunto mediciones para antes de pulsar el boton de encendido, y después de pulsarlo.

 

PL302 (BATT+)  .... Before 3,1V ..... After 3,1V

PL502 (+1.5VSDGPUP) ... Before 0V ..... After 1,5V

PL602 (+1.5VS_VTTP) ... Before 0V ..... After 1,07V

PL802, PL804 (+VGA_CORE) ... Before 0v ..... After 0,90V

 

PL704 (+CPU_CORE) ... Before 0V ..... After Si la memoria esta colocada en JDIMM1 el voltage es estable 1,1V hasta que apaga. Si la memoria está colocada en JDIMM2 el voltage es inestable entre 0,85V y 1,05V

Cuando la memoria esta colocada en JDIMM1 enciende y apaga en 1 - 2 veces y posteriormente hay que pulsar el boton de encendido nuevamente. Cuando esta en JDIMM2 se mantiene encendido.
En cualquierla de los casos, sin enviar señal a la pantalla

 

PL701 (+VGFX_CORE) ... Before 0V ..... After 0V

PL402 (+3VALWP) ... Before&After ... 3,3V

PL403 (+5VALWP) ... Before&After ... 5,1V

PL501 (+1.5VP) ... Before 0V ..... After 1,5V