Asus K73SV - Not powering on

[dellxps15]

Re: Asus K73SV - Not powering on

if u put battery? u have voltage on some coil ?

[angelicous]

Re: Asus K73SV - Not powering on

Battery is dead. No way to tell since i can't charge it :/

Guys what about the mosfet? I am talking via PM with some member here on the forum, and he said, if i put the probes in drain/source and ground, and in diode mode i don't get any reading, it means the mosfet is ok...

Is that right? Becaus i was told when learning about mosfets that the oposite... i need to have readings between ground and source/drain, or mosfet is damaged...

[sasser]

Re: Asus K73SV - Not powering on

better to check mosfet with pull out from the board. and test with continuity or diode mode . black probe black on pin 1|2|3 and red probe on 4|5|6 . if it beeps that`s bad

[angelicous]

Re: Asus K73SV - Not powering on

How do you guys test capacitors on the board?

I think mosfets are good. I put multimeter on diode mode, and test the capacitors. Some i get readings, but i have one or two that i don't get anything... Even changing the probes position. No reading, or short.

Can diode mode be tested to test the capacitors on the board? How do i know they are bad?

I saw a tutorial that explains how to measure the fahrenheits, but i don't know what's the ammount on each capacitor... So what's the best way to test a capacitor and when i find a burn one, how do i know what to get without schematics?

The poles of the charger where switched, so 90% shure that some capacitor is burned.

[dj_ricoh]

Re: Asus K73SV - Not powering on

apparently its better to test the ceramic caps with Ohm meter or charge the caps with a lab PSU.
in diode mode you can only see if its shorted on one side or to ground but in this case you can use a simple continuity set to see if its short to ground.
Like put the black probe on ground and probe the caps until one cap beeps on both pins.(crapy test) because there is small chance you will find a shorted cap. there is !!! but in that case the notebook does NOT| power on and it kills the adapter (turns off).
this case its common to dell no power and turns off adapter.

I found out like 3 weeks ago something like this.
put the lab psu on 2.5v and for a 0.5 seconds I charge the cap like super fast. if it jumps on both side like the AMPS that means its fk up.

A cap most of the time its connected to ground so in one pin the amp of the PSU will be max to 5amps, but on the other side it needs to be 0 if I see a value that means something its wrong and I take it down because its leaking.

to have a knowledge about that cap I`ll see the value with ohm meter and many will make a database of caps with bad value if you don't have a esr meter.

[ktmmotocross]

Re: Asus K73SV - Not powering on

nobody have ESR meter?

[angelicous]

Re: Asus K73SV - Not powering on

But when i do diode mode, i get readings on the caps... i mean, i put one probe on each side of the capacitor, and it gives me readings... And i have some that i don't get any reading or shor... Is that normal?

[dfragx]

Re: Asus K73SV - Not powering on

Hello my friends, if you are interested, EEEPC mainboard ( Atom ones) has one of those components if you are in need of a doner,
Thank you all,

[chadı]

Re: Asus K73SV - Not powering on

please i need bios file
k732sd rev:2,1