Sony Vaio SVF15A1C5E display no backlight

[ciki]

hi laptop missing screen backlight everything else works ok ,fuse f1 have power 3.3v but still no backlight i attach schematic if somebody knows help

[JaroTech]

Re: Sony Vaio SVF15A1C5E display no backlight

Hi, from your schematics, the backlight is powered by the pins 37,38,39,40, verify if you have the VIN at the capacitor C353. If you have zero voltage, then the fuse F4 has blown.

[ciki]

Re: Sony Vaio SVF15A1C5E display no backlight

Hi I have 3.3v on c353 but strange no ground and no fuse f4 only empty place where should be ,looks like never was there

[JaroTech]

Re: Sony Vaio SVF15A1C5E display no backlight

Maybe you have the wrong schematics, I'm answering with what you give me.

[ciki]

Re: Sony Vaio SVF15A1C5E display no backlight

Its right one i will upload the image of the place F4 and if i have 3.3 v on C353 is thats mean that backlight power ok

[ciki]

Re: Sony Vaio SVF15A1C5E display no backlight

Jaro you are right I put the fuse f4 on the place and Voila thx