Blown capacitor on asus zenbook UX303L motherboard

[julienD]

Hello,

I did some repear on mechanical part of the laptop. Unfortunately, I did not remove battery before.
When connected the screen to mainboard, connector slipped and its metallical casing caused a short cut on screen connector pins.

It seems that screen backlight was not working anymore. But... When plugging the external power supply, the screen was correctly ligthed at full power. When dimming the backlight, it started flickering. After some minutes, the screen was not
backlighted anymore, with or without external power supply.

I found out that, on the bottom of the motherboard, just under the connector.
One component is blown. It looks like a 0603 capacitor.

I would be pleased to change it instead of buying $300 refurbish chinese motherboard.

Here are one picture right after the damage and one after some cleaning.


Do you have any advice on which value to use ? I thought doing a trial and error, starting at 100nF and increasing 10x each.

Thanks for your help.
Julien

[julienD]

Re: Blown capacitor on asus zenbook UX303L motherboard

Very interesting thanks.

But I'm a bit confused.
Screen connector is referenced as J4501 on my board and is a 40 pins
connector.
On the schematic J4501 is 23 pins and the pins that are grounded on the schematic are not grounded on my board....

[piernov]

Re: Blown capacitor on asus zenbook UX303L motherboard

Check on the boardview.

[julienD]

Re: Blown capacitor on asus zenbook UX303L motherboard

Check on the boardview.

Can you tell me which soft I should use for this format?
I tried frizing and openBoardView, but none is working...

[piernov]

Re: Blown capacitor on asus zenbook UX303L motherboard

For OpenBoardView you need to add in the FZ key manually (found on the IRC channel's topic).
The original software is PCBRepairTool.

[julienD]

Re: Blown capacitor on asus zenbook UX303L motherboard

It works!
Never thought I'd be able to find this piece of information anywhere!

total cost: 0.052 euro !

Thanks a lot.
Julien

[adig123]

Re: Blown capacitor on asus zenbook UX303L motherboard

How did you get the schematics for this MoBo? Is it included in the FZ file?

[ktmmotocross]

Re: Blown capacitor on asus zenbook UX303L motherboard

...

[MargoAsus]

Re: Blown capacitor on asus zenbook UX303L motherboard

Hi!

I have exactly the same problem but after the entire day of googling (including trying to open the .fz file ^^) I did't found this component reference to replace it. Could you, please, give me that information?

Thank you so much!