Southbridge chip location

[two-dogs1]

I have a Toshiba laptop I have taken the Motherboard out and would like someone to point out the southbridge chip on it. The board is a DA0BDBMB8F0 A000241250 and need someone to show me in a picture..........thanks..........Larry

 

[tsnor]

Could not find a photo. Your question is clear, intel people now call the southbridge the "Platform Controller Hub (PCH)" The thinkpad t42 photo here has the southbridge labled. https://en.wikipedia.org/wiki/File:IBM_T42_Motherboard_IMG_2591a.jpg Look for a large chip from intel then google the markings on it.

 

[getochkn]

Can I ask why you want to find the SB chip?

 

[SoggyTissue]

the most likely southbridge location is here:

the big black square pcb with smaller black chip housing in center, at the bottom of the board.

i believe the multi pin square to be the north/south bridge.

i cannot say for certain, the quality of the picture does not allow me to identify it 100%, theres no detailed pictures for me to see to be sure.

i hope this helps you in what youre trying to do.

 

[two-dogs1]

Answering your question the reason why is that I was thinking about buying a MB with a bad southbridge chip in it and wanted to know how hard it would be to replace. So if a seen where it is on the board that would give me an idea of how difficult it would be. My motherboard burns my finger if I touch the black (ba2511) chip next to the power supply plug. Also no power to any of the capacitors and was hoping to get by cheap..........

 

[two-dogs1]

Adept thanks for the info but that just shows me a SB, I need to know where it is on my board. Like I said it is a DA0BDBMB8F0 A000241250 motherboard I need the location on that ...........thanks...........two-dogs

 

[Kasper Jorgensen]

Answering your question the reason why is that I was thinking about buying a MB with a bad southbridge chip in it and wanted to know how hard it would be to replace. So if a seen where it is on the board that would give me an idea of how difficult it would be. My motherboard burns my finger if I touch the black (ba2511) chip next to the power supply plug. Also no power to any of the capacitors and was hoping to get by cheap..........

Well, you will have to be an expert in soldering if you are going to replace that.

 

[getochkn]

It will be a BGA chip, so you will need a BGA reflow station to remove the chip, stencil for the replacement and appropriate sized solder balls to re-ball the new chip. Not an easy job for even an expert as it's easy to lift a trace or solder pad. Even a few degrees difference can screw things up.

 

[Kasper Jorgensen]

Don't mess with it as it is way to difficult and not worth the time and hassle.

 

[SoggyTissue]

sorry the linked pic is stated as a DA0BDBMB8F0 A000241250 toshiba satelite p70-p75 DA0BDBMB8F0 A000241250, was this not an accurate representation of the laptop mobo you have? my apologies

 

[tsnor]

Rather than replacing the SB chip, buy a used MB on ebay. $50. (Aside Soggy -- The picture you post is EXACTLY what I thought was a DA0BDBMB8F0 A000241250 based on web searches, and I'd had the same guess on which was the SB)

 

[two-dogs1]

Ok it looks like changing out a SB chip is out, one more question and to most it might be a silly one but here it goes. Can you use a 19 volt computer power supply to check a 5 volt computer fan or will it burn it up immediately?.....The reason why I asked this question, is a made some pins to go into the fan connector and after adding power to the fan it momentarily spun and then nothing, actually it just moved the blades for just a split second....please educate ....thanks....two-dogs

 

[Kasper Jorgensen]

Ok it looks like changing out a SB chip is out, one more question and to most it might be a silly one but here it goes. Can you use a 19 volt computer power supply to check a 5 volt computer fan or will it burn it up immediately?.....The reason why I asked this question, is a made some pins to go into the fan connector and after adding power to the fan it momentarily spun and then nothing, actually it just moved the blades for just a split second....please educate ....thanks....two-dogs

No you cannot do that. A 5V fan will break down at 19V. Also normal desktop computer fans are 12V.

 

[two-dogs1]

This is not a desktop computer and on the motor it says 5 volts .............just saying. So just that split second you think burnt it up?

 

[Kasper Jorgensen]

This is not a desktop computer and on the motor it says 5 volts .............just saying. So just that split second you think burnt it up?

Maybe and maybe not. Cannot tell, but the risk is very high.