Southbridge too hot

[Subhajitdas298]

I am trying to run my old PC with P5G41TMLX3 motherboard.
Problem is:
My PC does not POST.
When I plug my power supply cord (not even turn on PC), and motherboard gets the green light on it, my motherboard's south-bridge starts to get hotter and hotter. No component is connected to motherboard. No SATA,, no PC/PCIe etc.
Please suggest me solution.

 

[krzyimprt]

I am trying to run my old PC with P5G41TMLX3 motherboard.
Problem is:
My PC does not POST.
When I plug my power supply cord (not even turn on PC), and motherboard gets the green light on it, my motherboard's south-bridge starts to get hotter and hotter. No component is connected to motherboard. No SATA,, no PC/PCIe etc.
Please suggest me solution.

What are the system specs? CPU, RAM, power supply ect.

 

[d9c8c98f]

Sounds like a short to ground in the south bridge

 

[Subhajitdas298]

I am trying to run my old PC with P5G41TMLX3 motherboard.
Problem is:
My PC does not POST.
When I plug my power supply cord (not even turn on PC), and motherboard gets the green light on it, my motherboard's south-bridge starts to get hotter and hotter. No component is connected to motherboard. No SATA,, no PC/PCIe etc.
Please suggest me solution.

What are the system specs? CPU, RAM, power supply ect.

Core 2 Quad Q9550, Asus P5G41TMLX3, 6+2 GB RAM (DDR3 1333).
I only put CPU and RAM when found this heating issue.

 

[Subhajitdas298]

Sounds like a short to ground in the south bridge

Any way to test it?

 

[jr9]

Are you able to get the CPU fan spinning when the system is powered on? Is the processor cooler warm as well?

 

[Subhajitdas298]

Sounds like a short to ground in the south bridge

Are you able to get the CPU fan spinning when the system is powered on? Is the processor cooler warm as well?

CPU fan spins.

 

[jr9]

If you install a speaker onto the motherboard (plugs into header) it will produce beep codes that can point you in the right direction. It could be any of your primary components.

Did is an old motherboard you found somewhere or was it running before and then suddenly the PC stopped working? It sounds almost like the VRM on the motherboard has failed if I was forced to take a guess. If this PC was in my shop I would try the CPU and RAM in a different LGA775 motherboard first, and then try a working power supply second, and then another LGA775 processor third as it is the part least likely do die under normal operation.

I'm not sure what to make of the southbridge being hot. I seldom see computers that even have a classical Southbridge anymore. If there's a problem with the Southbridge it would be going with the motherboard anyways it's built into the motherboard.

 

[Subhajitdas298]

If you install a speaker onto the motherboard (plugs into header) it will produce beep codes that can point you in the right direction. It could be any of your primary components.

Did is an old motherboard you found somewhere or was it running before and then suddenly the PC stopped working? It sounds almost like the VRM on the motherboard has failed if I was forced to take a guess. If this PC was in my shop I would try the CPU and RAM in a different LGA775 motherboard first, and then try a working power supply second, and then another LGA775 processor third as it is the part least likely do die under normal operation.

I'm not sure what to make of the southbridge being hot. I seldom see computers that even have a classical Southbridge anymore. If there's a problem with the Southbridge it would be going with the motherboard anyways it's built into the motherboard.

Yes I will try you speaker idea soon. And see what I can find.
Also southbridge is still intact in modern mobo. Just north bridge is integrated inside CPU for new cpus.

 

[Subhajitdas298]

If you install a speaker onto the motherboard (plugs into header) it will produce beep codes that can point you in the right direction. It could be any of your primary components.

Did is an old motherboard you found somewhere or was it running before and then suddenly the PC stopped working? It sounds almost like the VRM on the motherboard has failed if I was forced to take a guess. If this PC was in my shop I would try the CPU and RAM in a different LGA775 motherboard first, and then try a working power supply second, and then another LGA775 processor third as it is the part least likely do die under normal operation.

I'm not sure what to make of the southbridge being hot. I seldom see computers that even have a classical Southbridge anymore. If there's a problem with the Southbridge it would be going with the motherboard anyways it's built into the motherboard.

No beep sound.

 

[jr9]

If you don't have access to another Intel socket 775 processor or another power supply to try, I would replace the motherboard. Chances are that what it is. No guarantee though unless you try another CPU or PSU first.

 

[Subhajitdas298]

If you don't have access to another Intel socket 775 processor or another power supply to try, I would replace the motherboard. Chances are that what it is. No guarantee though unless you try another CPU or PSU first.

Ok gonna try.