Dell N5110 short

[ravi_1617]

As power applied by adapter ,adapter led turns off.did't find any short
power rail at Gpu shows a 3.6 ohms at coil PL9201 .
is this is correct or not.
I also want to open coil and give some other kind of load &chek voltage across coil pl9201.
Did any one did it.
Thanks.

[meritosari]

Re: Dell N5110 short

I was thinking you should check pu4002 and pu4003, as well as any high drive mosfet in each regulator first.
do not forget dc connector should also be checked

[ravi_1617]

Re: Dell N5110 short

i have tested all mosfet. how much ohms should it show.is mine correct or abnormal

[ravi_1617]

Re: Dell N5110 short

I have disconnected gpu coil & given some load & found full board is on all coil showing power at the gpu coil showing around 18-19 volts & main board stays on .how can 18 volts come here.

[dspok]

Re: Dell N5110 short

I generally solve shorting with the help of desktop power supply injecting low voltage high amper. The shorted part gets too hot or smokes.

[ravi_1617]

Re: Dell N5110 short

i my case where is the short gpu side or gpu power side

[fddizon]

Re: Dell N5110 short

too high... maybe shorted upper fets

[ravi_1617]

Re: Dell N5110 short

Fddizon you are correct. Thanks
both the fets defective .
but i am unable to get same type & no fets
so replaced with black fets.(FDS6676)
which are working fine and display also comming .They are not heating also
Is it advisable to use them .also attaching images of both sides.

[fddizon]

Re: Dell N5110 short

i think they will work the same. if you can fit them without shorting that is fine...

[ktmmotocross]

Re: Dell N5110 short

i think they will work the same. if you can fit them without shorting that is fine...

NO THAT IS NOT FINE! IT LOOKS LIKE SHIT!

Hate this "gluers". Why dont u put in some other mosfet. its normal N-channel 30V 12A mosfet. IT IS IN EVERY NOTEBOOK w DDR2.

[fddizon]

Re: Dell N5110 short

lol

[ravi_1617]

Re: Dell N5110 short

'' Lol '' ktmmotocross
This i have just done for testing . how much it is heating.display comming or not.
If you dont like it why are u saying to use other mosfet from ram area DDR2 coz that will also be glued.
LOL

[ktmmotocross]

Re: Dell N5110 short

fot testing ok, not for using.
ddr2 ram area dont have that high current mosfets. its in cpu, vga or main power area

but when i give a closer look, i see that you have other package than regular mosfet

[ravi_1617]

Re: Dell N5110 short

Hi !
Finally I go same component metal FETs replaced it was working
Fine. Every thing was fine kept in my rack. 2weeks Not yet delivered .
AGAIN .
for same set same problem .occurred adapter led turn off after inserting in laptop
Only one doubt is that .
The adapter power is varing for 19 to17volts slowly and again 19volts
will this cause short
Thanks

[ktmmotocross]

Re: Dell N5110 short

yes

[ravi_1617]

Re: Dell N5110 short

Thanks for quick respons & answer

[raajkumar]

Re: Dell N5110 short

I have a problem with my Dell N5110. this worked with External monitor fine. But Led working backlight only not any display on the screen. i checked LCD_VDD and is shown Power 0V. I found U4901 is faulty on this MB. Thereafter i tested with a jumber to pin 3 with pin 4. Display worked fine. i shut down the notebook. But unfortunately this jumber wire has touched with PR4002 ( DCBat out 18V ) after shut down the notebook. Now i changed blown fuse on the led screen and this notebook is giving 8 beep sounds ( Says No display attached. I try with the external also but same ). any one having idea ?

[swapnil1996]

Re: Dell N5110 sometime power on sometime not

I have dell inspiron n5110 which is working good yesterday but today morning when switched on it's not turning on when i pressed again it's on for 5 min then automatically off , at the evening again its on for 3 hrs then i shut down. After 30min when i switched on again it's not power on. So what's the problem with my laptop plz help.