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PostPosted: Tue Oct 27, 2015 1:37 am 
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Pilgrim
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Hello All,

Hope that i am in the right topic for this qeustion?

I have an problem and trying to solve it out myself. If you see the pictures the IC ( i think they call it like that) is burned and smoking when i put the electric on it. How can i replace this. Where can i find this same part ? I cant find anywhere the part number of the IC chip

hope you profs can help me

bye

Image

Image

Image


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PostPosted: Tue Oct 27, 2015 5:02 am 
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Mobo-fu Master
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Welcome to Motherboards.org.
Some more info on this board would be helpful. Brand, model number, is it laptop, tablet or regular motherboard.
Integrated chips are not easy to replace, best left to a pro. But what caused the problem, excess heat, a short circuit or bad capacitors?

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PostPosted: Tue Oct 27, 2015 3:03 pm 
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Pilgrim
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Hi there thank you very much for your reply. The problem was the dc cable somehow.

If i can find that chip and buy it then someone can replace it for me. I know someone who can do that. But he don't know the number or type model because its all burned. If someone can help me please

see details below

Toshiba satellite pro L770-136
part no. PSK3XE-01200WEN
serial no: XB220094R

BS_R/TK_R mainboard
REV 2.1
p/n: 08N1-0NA1J00


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PostPosted: Tue Oct 27, 2015 3:25 pm 
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Best suggestion on finding the original part no. is to browse the user manual, possibly a detailed image of that portion. Or browse parts sites and maybe eBay for listings of that model mainboard. A chance you can read a logo on the chip.

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PostPosted: Wed Oct 28, 2015 10:32 am 
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Pilgrim
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Thank you for your reply. I can't read anything on it because burned and melted complete. If someone know any ideas i can't find it on google, maybe here someone who's know how to find it. let me know

cheerss


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PostPosted: Wed Oct 28, 2015 11:10 am 
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Happened to my old Toshiba U200, same DC controller chip went on fire. It was easier (and cheaper) to replace the board. There are some on Ebay, not cheap, but probably cheaper than the fix, you wont know what damage the fire has done to the traces on the board or components around the chip...

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PostPosted: Fri Oct 30, 2015 12:55 am 
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Pilgrim
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hi there..l'll will try to fix it first.

I'll asked someone for help what the part number is he replyed with this

48350
S(or sigma) A Q(or O) Triangle(or A or delta?)
.W12C


what does this mean??

Do you know how to find it online maybe an link for me

bye


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PostPosted: Fri Oct 30, 2015 3:24 pm 
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The replacement part has to be the exact same as original, or may cause more damage.
Best to get a look at an identical board, or find a parts schematic for reference.
There is a label near the center, in one image. The board may have been made by Hann Star, "J ***-0 E89382". That may be the best item reference. Also it is revision (Rev.) 2.1.

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PostPosted: Sat Oct 31, 2015 12:55 am 
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Check here.. It looks like an N channel mosfet... I would be tempted NOT to repair as the mosfet has flamed up the board and it looks as though resistor R020 is damaged and the board traces above it heading towards the battery terminals are damaged too.

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PostPosted: Sat Oct 31, 2015 1:07 am 
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the 2 smal ceramic caps in the top were baked to a crisp too, replace them.

4835D would make sense then, that is a mosfet:
http://www.mikrocontroller.net/topic/259221

all of this repair will be at your own risk, we are not responsible for any additional damage that may occur. measure the traces and then measure them again. Check any components connected to this mosfet as well. Check for shorts.

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