C660 la-6842p WATER DAMAGED

[gcomputers]

Hi i m working on this Toshiba WATER DAMAGED not charge no light nothing completely dead.
i find on it PQ24 shorted with ground removed measured its ok not burned , i put it back , after i find the problem is IC 51125 replaced OK charge turn on BUT no display black screen.
Cpu i3 heats normally, Igp HM55 stay cool , reflowed it , bios flashed no change.
What do you think , any idea please ?

[gcomputers]

Re: C660 la-6842p WATER DAMAGED

Hi today received IC chip
Changed pu5 tps 51125 CHARGE ok

But no screen i find the problem is PU15 ADP3211A changed with new and OKOKOKOK
turn on Video ok TOSHIBA logo ....

Before closing i have done another test now turn of after 2 sec , no screen.. , i hear a whistle near cpu , some caps near cpu are shorted , without CPU the Mainboard stay power on , but with cpu have this problem TURN OF AFTER 2 SEC.

Any idea please???????????????

[gcomputers]

Re: C660 la-6842p WATER DAMAGED

Here the schematic

[FShahid]

Re: C660 la-6842p WATER DAMAGED

Several reasons, first check if caps seems shorted without CPU. If it doesn't then CPU is gone and needs replacing.

However before that make sure you have used correct components you previously replaced. Also clean the board between the components throughly (especially the places where you have changed the components and look for any excess solder) as that may have caused this new issue.

[gcomputers]

Re: C660 la-6842p WATER DAMAGED

SOLVED i bought 5 ic chips from ADP3211A replaced with another new chip and ok Works fine.

In this mobo i replaced ic chip TPS51125= Charge ok
no screen ic chip ADP3211A= video ok