asus x409fb rev 2.0 shorted RT8249CGQW

[kalilinux25]

Hi good day this board was shorted the RT8249CGQW is needed to change because it was getting hot after trying to chagne the ic it was getting hot again I tried to check all pin no shorted I tried to remove the ic then pumping voltage on the dc jack no shorted reading on dc supply , why its getting shorted?

[Sametbey]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

RT8249C integrated by dismantling 3.3 V LDO output 3V by giving you can check whether there is heating. Pin 3 out.

[kalilinux25]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

[QUOTE=Sametbey;1014288]RT8249C integrated by dismantling 3.3 V LDO output 3V by giving you can check whether there is heating. Pin 3 out.

pin 3 is not shorted to ground sir

[kalilinux25]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

is this also normal sir that my APL5930CQBI vOUT pin is conencted to ground?

[Sametbey]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

Is there a 3.3v LOD? which part is getting hot?

[kalilinux25]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

Is there a 3.3v LOD? which part is getting hot?

the ic it sel sir is getting hot if i plug the charger

[Sametbey]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

By removing the APL5930CQBI integral, give 1v to the output and check which part is heating up.

[kalilinux25]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

By removing the APL5930CQBI integral, give 1v to the output and check which part is heating up.

cant detect where is heating up dc supply 1v 800miliamp its conusmung

[stingerchamp]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

First share schematic or find at this forum

Second do not inject voltage even 1volt until sure of fault area

Third check vout capacitor for leakage or short

Again follow the sequence and always check via multimeter voltage is dropping even slightly different reading will be shown

If RT8249C is getting hot then it can be due to enc KBC or any point which is connected to it or ic itself

[kalilinux25]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

First share schematic or find at this forum

Second do not inject voltage even 1volt until sure of fault area

Third check vout capacitor for leakage or short

Again follow the sequence and always check via multimeter voltage is dropping even slightly different reading will be shown

If RT8249C is getting hot then it can be due to enc KBC or any point which is connected to it or ic itself

the accident of this board was accidentialy shorted the lvds cable by twizzers sir

if that was the case what most likely to damage?

BOARD no avail schematic

[vienzen]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

Hi good day this board was shorted the RT8249CGQW is needed to change because it was getting hot after trying to chagne the ic it was getting hot again I tried to check all pin no shorted I tried to remove the ic then pumping voltage on the dc jack no shorted reading on dc supply , why its getting shorted?

hey mate, did you solve your problem?

[kalilinux25]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

hey mate, did you solve your problem?

nope still getting short Hoping to get a schematic

[vienzen]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

nope still getting short Hoping to get a schematic

we have the same problem

[Sephir0th]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

Ohms readings from all input and output pins of the controller with all power removed? Something should be wrong there if it's getting hot.

[dokterpc]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

Just check lvds connector maybe broken or short. Buzzer with multitester i had try it and solved with change the connector

[papisp]

Re: asus x409fb rev 2.0 shorted RT8249CGQW

https://www.badcaps.net/forum/showthread.php?t=88605
Schematic