acer aspire ES1-432 white screen problem

[String2016]

Re: acer aspire ES1-432 white screen problem

thanks for the response jarotech yes there is a chip on the backside on the lvds connector it shows 525AU and when i used continuity on pin 35 yes its beeping it is connected

[JaroTech]

Re: acer aspire ES1-432 white screen problem

Is pin 35 connected to pin 1 of this chip?

[String2016]

Re: acer aspire ES1-432 white screen problem

yes it is connected pin 35 to pin 1 of the chip

[JaroTech]

Re: acer aspire ES1-432 white screen problem

Ok, you should have 3V on pins 4 and 6, what do you have on pin 3 and pin 1?

[String2016]

Re: acer aspire ES1-432 white screen problem

this chip has five legs only 3 on the other side and 2 on other side.on pin 123 there is 0v but on pin 4 and 5 there is 3.3v

[JaroTech]

Re: acer aspire ES1-432 white screen problem

I have the datasheet for the G5243A (523Ax), for this chip the enable pin 3 is active-high, if it is 0V, the chip is not activated. But you have a 525AU, I do not have the datasheet for this one, I don't know if pin 3 should be 3.3V.

[String2016]

Re: acer aspire ES1-432 white screen problem

ok thanks for the response jarotech maybe someone can share datasheet and help on this please

[arisravi]

Re: acer aspire ES1-432 white screen problem

genenerally input is 3volts and measure voltage at the output.
at the time display comes the output will be 3 volts ,it becomes 0 volts if screen trun white
if it happens like that,short the input and output of lcd vcc 5pin mosfet.use schematic to identify mosfet

[String2016]

Re: acer aspire ES1-432 white screen problem

thanks for the response arisravi do you mean i have to make a jumper form pin 4 or 5 to pin 3?the problem now is only a second shows good display and then it goes white and for a long time it goes black.i dont have schematic for this model

[JaroTech]

Re: acer aspire ES1-432 white screen problem

The schematics for the ES1-432 is Quanta ZQF, you have the schematics on different site, but you have to paid for it. I'm using the schematics for the ES1-431 for reference, it's not the same but you can compare the components.

[String2016]

Re: acer aspire ES1-432 white screen problem

could you share here please and it is not possible to make jumper from pin 4 to pin 3?

[JaroTech]

Re: acer aspire ES1-432 white screen problem

This is the schematics for the ES1-431, and the datasheet for the G5243A of the ES1-431. If you make a jumper from the pin 4 to pin 3 for your 525AU chip, you will bypass the function of the PCH_DISP_ON.

[String2016]

Re: acer aspire ES1-432 white screen problem

thanks for the datasheet and schematic.you are right pch_dip_on will be bypass if i make a jumper.i have attached the image of 525au chip on pin 3 there is 1 resistor and it measures 4.22kiloohms could it be this the culprit?

[JaroTech]

Re: acer aspire ES1-432 white screen problem

It's hard to say because we do not have the schematics for your ES1-432 and the 525AU.

[String2016]

Re: acer aspire ES1-432 white screen problem

maybe someone can share a schematic for this model please

[String2016]

Re: acer aspire ES1-432 white screen problem

anyone please help if you have schematic for this model please share

[JaroTech]

Re: acer aspire ES1-432 white screen problem

I don't think anyone on this site wants to share the schematics for Acer Aspire ES1-432 Quanta ZQF if they have it?

[String2016]

Re: acer aspire ES1-432 white screen problem

still anyone who can share please help

[imranromi]

Re: acer aspire ES1-432 white screen problem

anyone please help

Led connector check pin 5 and 6 (3.3v) have or not?

[jiroy]

Re: acer aspire ES1-432 white screen problem

Sorry guys , I have only the service guide for this model :