does anyone has a schematic or boardview for this Model:
Lenovo IdeaPad 710s-13isk
Wistron LS710 15238-1

thanks

This specification for the Lenovo IdeaPad 710S Plus Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 710S Plus boardview and 710S Plus schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo...

This specification for the Lenovo IdeaPad 710S Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 710S boardview and 710S schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo IdeaPad 710S...

This specification for the Lenovo IdeaPad 710S Plus Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 710S Plus boardview and 710S Plus schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo...

Lenovo ideapad 710S-13ISK
Model name:80SW
Motherboard: LS710 MB 15238-1 448.07D05.0011
Sympthoms: power LED on, no Display.
Attached BIOS dump file....

Re: Lenovo ideapad 710S-13ISK bios needed


thanks for your replay
but the same problem no display...

Re: Lenovo ideapad 710S-13ISK bios needed



Here's your New BIOS, try it and let me know....

Re: Lenovo ideapad 710S-13ISK bios needed



LS710 MB 15238-1

yes thats true...

Re: Lenovo ideapad 710S-13ISK bios needed



Write your Device Model and Serial Number.

I can see this Serial Number in your file (R90LU9YX), it's refers to (Xiaoxin Air 13)....

Re: Lenovo ideapad 710S-13ISK bios needed

can you repair my dump file please...

Hi

Lenovo ideapad 710s-13isk i can see 5vALW but cannot see 3.3VALW

i can see that EN1 present but EN2 is not

Can you please help find fault ?

attached schematics abd photo of board en2 area...

Re: Lenovo ideapad 710s-13isk no power

The laptop work fine on external monitor also run furmark on it and it works, I will try another screen.

Re: Lenovo ideapad 710s-13isk no power

EDP cable and screen checked??

Re: Lenovo ideapad 710s-13isk no power

So it turns out to being a weird one, hm? we can forget the 3V_EN now I guess...

So we have either a display or a graphics issue. I guess we should able to exclude the display by checking whether the behaviour is the same with external screen. Try and report pls

Unfortunately my bets are on graphics issue

Re: Lenovo ideapad 710s-13isk no power

OK, this machine is tricky, I will share

today i played with it and when i removed the nvme ssd it turned on and post.
then when i re assembled it. again, it is powering on but no post.
some time it is post and most of the time it does not.

i can see that cpu is getting very hot and i saw now that when it powers on i see multiple color dots on the screen randomly flickering

[URL="https://drive.google.com/file/d/1i5j0PYVe54Bk7i7q_12BfD_d__c_E5m6/view?usp=sharing"]Video[/URL]
...

Re: Lenovo ideapad 710s-13isk no power

Was just a shot into the blue, but since the board does power an with even the fan spinning, it seems like it is exactly like this.

However, you have very likely a completely different issue then which has probably nothing to do with 3.3V.

you should check the voltages which come up, while the board is on so we can look where it is stuck in the sequence. Also resistance to GND measurements of each power rail (at least of the coils) would be helpful at this point.

Re: Lenovo ideapad 710s-13isk no power

the computer turns on for a few seconds then turns off (fan spinning)

Also, can you please explain how did you understand from schematics that 3.3 will be available only after power on ?

Re: Lenovo ideapad 710s-13isk no power

I think I did a mistake too. So it seems like PR4515 is missing by factory and 3V_EN will be pulled up from S5_ENABLE, so probably only AFTER power button press and for this reason no issue at this point.
Check whether S5_ENABLE is indeed not present, whether you have 3.3V at the power button and whether the power button itself works as supposed to be.

Re: Lenovo ideapad 710s-13isk no power

I think i made mistake in the problem description

Please let me try again

on PU4501 pin11 (EN2) is present 20v
on pin12 (EN1) not present 0V

I think I found PR4515 it has 3.3v on on side, its resistance is 0.33M ohm

attached photo...

Re: Lenovo ideapad 710s-13isk no power

But at PU4501 Pin11 (3V_EN) is missing? Weird, but can't be hard to solve since it comes the missing enable comes from 5V_EN via PR4515. So find PR4515 and check voltage at both sides.

Do you have a short to GND at 3V_EN by any chance?

Re: Lenovo ideapad 710s-13isk no power



Yes, I have 20v on EN1 and 3.3v on EN2...

Re: Lenovo ideapad 710s-13isk no power

Please onfirm whether 5V_EN is indeed present or not

Re: Lenovo IdeaPad 710s-13isk Wistron LS710 15238-1 schematic or boardview



thank you this is exatly the right one, but the schematic is different.
do you have also the schematic to this boardview?...

Re: Lenovo IdeaPad 710s-13isk Wistron LS710 15238-1 schematic or boardview

Maybe the attached is close ?...

Re: Lenovo IdeaPad 710s-13isk Wistron LS710 15238-1 schematic or boardview

please upload the boardview, still having troubles with this notebook ... thank you