Please help: Asus fx506l no power

[Lukosiukas]

Hi guys, got interesting problem : Asus fx506l with dabkxdmb8e0 board. It had liquid damage on palm rest (motherboard clean af), 19v is present but no 3.3v, 5v. Checked all coils, no-one had short to ground. I'm thinking the ITE IT8987VG is bad. Please confirm my suspicion. Plugin in without battery, orange light is blinking, sometimes power led turns on like for .1 seconds.

[Repdata]

Re: Please help: Asus fx506l no power

Reprogram ITE IT8987VG for testing

[Lukosiukas]

Re: Please help: Asus fx506l no power

Mine is BGA type, dont have any schematics or diagrams, is there any other possible way to test it ?

[reformatt]

Re: Please help: Asus fx506l no power

Check the larger caps around the EC for voltage in standby. One or more should have +3.3V. Some designs don't switch on +3.3V till enabled by the EC. Logic voltage is usually provided by a LDO output of the 3.3V regulator IC.

Look at each IC on the board part numbers to work out which one is providing the 3.3V and 5V rails.

[mhd alaa]

Re: Please help: Asus fx506l no power

Reprogram ITE IT8987VG for testing

pls did you have program it

[tH0RiN]

Re: Please help: Asus fx506l no power

Same here, Any ec.bin to download an reprogram?

[SMDFlea]

Re: Please help: Asus fx506l no power

Same here, Any ec.bin to download an reprogram?

Laptop bios and EC requests go here -> https://www.badcaps.net/forum/forumdisplay.php?f=40

[5o5]

Re: Please help: Asus fx506l no power

This EC is self-programming from bios... Look at the schematics

[guruji]

Re: Please help: Asus fx506l no power

check the spi resistor to hold 7pin should be 3.3k

[luckyfahad79]

Re: Please help: Asus fx506l no power

This EC is self-programming from bios... Look at the schematics

how do you judje by this pic its bios programmable ..thanks

[jasko_jacker]

Re: Please help: Asus fx506l no power

Usually ite is self programming , type ?