General discussion

Locked

Burning on ATX Connector

By Steven Lynas ·
Hi all,

I have an AMD 2200+, 1GB RAM, 40GB HDD (5400 RPM), 128MB MSI TI4200 8xAGP card, Windows XP Pro SP1a.

The problem I am having is that the machine hangs in Windows (Screen Freezes, no error msgs). I took the machine to bits, removed theATX power lead from the board, and found there to be scorch marks around the 3.3v pin on the board and the actual connector. What would cause this, my machine is totally un-useable, and seeing as I built it myself, have no warranty to speak of.

Will I have to peform a heart transplant on the board?

Please help me....

This conversation is currently closed to new comments.

9 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

Burning on ATX Connector

by saihib In reply to Burning on ATX Connector

Your power supply took a ****. Replace it. Your MOBO may still be good, since it still boots to Windows.

Collapse -

Burning on ATX Connector

by Steven Lynas In reply to Burning on ATX Connector

Poster rated this answer

Collapse -

Burning on ATX Connector

by donmars In reply to Burning on ATX Connector

No not the power supply! The AMD processor is sucking juice like crazy! Is this system overclocked? It could be the regulator on the mother board is a problem. Either way look to the Microprocessor or the motherboard itself. What is happening is something is drawing more current than it should. The power supply provides this current and is succeeding except the plug and pin is not designed to stand this excessive flow so it overheats and burns because it cannot absorb the heat produced. What isthe temp of the processor? Set all the BIOS settings to default and see if that works.I suspect a new motherboard is in order or try a processor replacement first.

Collapse -

Burning on ATX Connector

by Steven Lynas In reply to Burning on ATX Connector

Got home, checked all my connections. The power cable for the processor fan wasn't seated properly. Would this cause it to overheat and start burning the ATX power in? If an AMD processor over heats does it suck more juice? I've said that was an unacceptable answer it isn't just need a bit more info before spending money I haven't really got.

Collapse -

Burning on ATX Connector

by donmars In reply to Burning on ATX Connector

Don't know if I should provide more answers here since you may reject a perfectly good answer then say you are not rejecting it. Messes up my stats. Obviously I was in the correct ballpark! Thermal runaway is a phenomena common to solid state devices where at a certain heated stage cunduction is out of control and snowballs. Thermal Runaway occurs when the equipment continues to generate heat faster than it can be dissipated. The temperature will continue to rise until the equipment fails or a fire breaks out. There are many causes for Thermal Runaway including defective design, improper installation (fan not in correctly) and control system failure. The component will "runaway", faster and faster? To do this it is also demanding more and more current, which means more heat, catch 22. was the fan not in operation at all? Does the system not work now that you plugged the fan in after it cooled down? You may have blown the Microprocessor. Again, it is not the power supply, check for other burn mark clues on the mother board. Can you try the MPU in another board?

Collapse -

Burning on ATX Connector

by donmars In reply to Burning on ATX Connector

On second thought, drawing that much current could have popped the power supply if it could not keep up! I doubt that though. Take voltage measurments on the board and see if you can locate the 3 volts or whatever that MPU (CPU) uses.

Collapse -

Burning on ATX Connector

by Steven Lynas In reply to Burning on ATX Connector

Dunno. The fan power cable wasn't seated correctly, which may have lead to shutdowns due to overheating... I hope. I've been using it now for nearly an hour. I don't think I've damaged anything. *On knees and praying*. Thanks for your help.

Collapse -

Burning on ATX Connector

by Steven Lynas In reply to Burning on ATX Connector

This question was closed by the author

Collapse -

Burning on ATX Connector

by Steven Lynas In reply to Burning on ATX Connector

If anyone else reads this, I have solved the problem. I had a MSI Ti 4200 8xAGP. This series of cards requires at least a 400W power supply and I had a 300W. Nice of them to tell me, it wasn't in the manual, had to ring loads of places to find out. I've stuck a 400W PSU in and it works like the beast it is.

Back to Desktop Forum
9 total posts (Page 1 of 1)  

Related Forums