Repair Component On Asus x51rl Motherboard

[GazzaS]

Hi,

New to this forum so hi all.

Basically our family laptop (Asus x51rl) died a death due to a faulty power supply. I could smell burnt silicon from inside it and dismantled it to find the issue.

I've found the source of the issue which is a burnt component by the battery socket which must be some sort of shorting pin. I've fixed computers all my working life and build electronics for a hobby but have never had a go at fixing integrated circuits before. Hell, what have I got to lose

Can anyone identify the component that is burnt out, I've attached two images of the damaged board and a couple of images I found on the net of the same board area with no damage.

Damaged Motherboard

damage1_small2.jpg (195.88 KiB) Viewed 3854 times

Damaged Motherboard Area

damage2_small2.jpg (99.24 KiB) Viewed 3854 times

Undamaged Motherboard Area

original2.png (107.06 KiB) Viewed 3854 times

Thanks for any advice,

Gary

[GazzaS]

Hi,

Found some more information. After a lot of searching (mainly non-english sites with google translate) I have found a few more images:





According to the forums it is a 5 volt Regulator part of the 5 volt stabilizer circuit labelled PU5900. The actual chip has marking 8C752 and they call the chip Stabilizator (but this could be a bad translation). They also mentioned replacing it with L78L05ACUTR.

Does this seem right from the new images? Would replacing the chip with the L78L05ACUTR be ok?

Thanks again,

Gary

[Biffo]

You now have to ask the question

did it die or was it killed?