Lenovo Z50-70 after ITE burned

[ktmmotocross]

Hello.
Havethis Lenovo Z50-70 that have burned PU5/3VALW/ and KBC ITE. replace both but +3VL line have only 18ohm and pulling +3VLfrom PU5 to 2,3V. When i inject 3V to it it draws only 0.09W and laptop works. What can be pulling down that line?

[ktmmotocross]

Re: Lenovo Z50-70 after ITE burned

sry it draws 0.9W /270mA but it was supposted to draw 100mA

[khaahk]

Re: Lenovo Z50-70 after ITE burned

Vccrtc?

[tomodachi]

Re: Lenovo Z50-70 after ITE burned

try to remove audio codec chip

[ktmmotocross]

Re: Lenovo Z50-70 after ITE burned

Vccrtc?

it is 2.7V

[ktmmotocross]

Re: Lenovo Z50-70 after ITE burned

try to remove audio codec chip

DAMN man it works

after remove it, everything works. even after replace it by ic from same board it works ok.

How did u know that? Please can u explain me how it is related to it?

[tomodachi]

Re: Lenovo Z50-70 after ITE burned

very common issue with that model, always check audio chip when you see ldo output is not present or shorted.
glad you make it work, cheers !