Fujitsu UH552 no power

[bajin]

Hi,
Fujitsu Lifebook UH552, no LED, no nothing, after water damage.
Cleaned all oxidised parts.
Found short on cpu power rail, I don't have schematic.
I have removed Coil L6710, short is on CPU side, resistance to ground 2,5ohm, is that normal ?

Another cpu power rail L6610, resistance to ground 3,8ohm.

where can I found schematic ?
thanks for help

[bajin]

Re: Fujitsu UH552 no power

sorry, i didn't find how to edit my post.

I plugged the MB in, there is a 3.3V on coil L6000. But 5V is missing.
I noticed U6100 is getting HOT fast.
But I can't figure out part number.

[dj_ricoh]

Re: Fujitsu UH552 no power

try without light or external light

[bajin]

Re: Fujitsu UH552 no power

Will try to take a better picture later this day. The one I posted is taken by USB microscope and PhotoBooth and it is the best out of many tries.

[dj_ricoh]

Re: Fujitsu UH552 no power

i need to buy a microscope to.
its a very good tool. if i`m not wrong it has a light that you can adjust on the cable right?

the microscope its very good to see if you solder right or got crack on the joint.
good, very good tool!

[atsio]

Re: Fujitsu UH552 no power

It's 5 and 3.3v regulator TPS51225C

[bajin]

Re: Fujitsu UH552 no power

atsio, Thank You. Ordered from China and waiting...