Looking for help to identify component

[narbuzov]

Hello,

I got an old IBM laptop  from ebay and it worked for 5 minutes and died. Once opened I discovered some signs of leakage around component
that I am not sure about. I've seen capacitors leaking, but this looks like some kind voltage regulator.

On the picture attached I am pointing to the substance around that area. Most of it was around MAX637 (switching regulator)  and SMD10 . Capacitors near was clean and looked good.

Anyone can help me to identify that SMD10 component ? Could it leak ?

Thank you!

[ataradov]

They are transistors and they can't leak.

The leakage is likely from the two electrolytic capacitors, which leads don't look so fresh. Or something else entirely.

[narbuzov]

This is what I though. Will try swapping capacitors.

[amyk]

SMD10P p-channel MOSFETs.

[eevcandies]

That could be a spill/accident.  What do you meant it no longer works?


try cleaning with denature (rubbing alcohol)

[DaJMasta]

Especially if it's under a vent or something, I'd suspect a spill or something else as well.  Could be the caps, but you'd think there would be a little pooling under them, unless the unit was oriented that the transistors were downward from the caps when the leak happened.

[narbuzov]

Once received I plugged it in and it turned on normally. Everything was good for about 2-3 minutes.

Later screen went black. but indicator panel  is partially functional (e-g battery charging showing something, caps-lock, num-lock showing something ).

 At that point i took it apart and discovered that substance and it was kinda bubbling around these elements. I cleaned up the area and after power is on I don't see more of the substance coming out from any elements.

Other thing I noticed that heatsink on the back of the laptop where power plugs-in is getting very hot.

So at this point I ordered capacitors as a first step in attempt to repair it.

Thanks.

 

[narbuzov]

There was no indication of liquid spell. FDD disk was above that area and it look very clean. I took keyboard apart and did not see any signs of liquid some dust - yes but no leaks.

Thanks.