I've just removed my power supply (ACE 580 UB) from my motherboard as I have a brand new motherboard. Problem is I've notice the orange wire connections (Pin 1,2 & 11 - I think) look blown (burnt). Would it be safe to use this same power unit on a new motherboard ? Itwas working last time I tried it
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Sounds like the power supply is not compatible with the motherboard. If the motherboard can't support a 400 watt powers supply you will either get a blinking light or nothing at all. Those optiplex's use a proprietory power supply because of the pin connectors and how a power supply is supposed to fit in there. If you can't find a 400 watt power supply that fits then get a hold of Dell and see if they sell one for that computer.
The connector on the motherboard needs to be resoldered. This is a common problem that has to be fixed right away. The loose connection will arc inside the unit and eventually damage the motherboard. Unfortunatly the entire laptop has to be disassembled as the motherboard needs to be removed . The connector needs to be removed from the board and reinstalled.
All the wires from the power supply are power connectors, depending upon the motherboard not all power connectors from the power supply maybe required. If there are no matching sockets on the motherboard, then that power connector is not required.
Man, trast me, the GTS 250 is way better than the hd 4870 one. on each section of the measures of performance factor, 250 beats the 4870. PhysX is the hardware utility for making the real world effects like the gravity , air factors, sea waves more realictic easily .
To see if power supply works unplug the psu from the motherboard and drives then plug the power cord into psu and wall the fan should come on letting you know that it works.
you can also get a multimeter and check each individual connector on the 20/24 pin connector to motherboard. check the psu docs for the correct voltages to each pin
If you smelled smoke then chances are that something may have gotten toasted. remove all expansion cards and try to turn on computer if nothing happens then the motherboard may have gotten toasted. Check the motherboard and expansion cards along with memory for shorts and burn spots.
You will have to figure out if your current case is ATX or Micro-ATX. Afterward find a power-supply online that will fit an ATX or Micro-ATX case. Another factor to consider is your motherboard's power connector. Some motherboards can only take a 20 pin while others take a 24 pin.
Perhaps a good power supply choice would be a PSU that has a 20+4 pin motherboard connector.
You can find some good Power Supplies online here. Just use the navigation menu at the top and go to: Computer Hardware>Power Supplies. After select, "Power Supplies" on the left and you will be able to find PSUs for desktop computers. I recommend the PC Power & Cooling brand, they are extremely reliable. Some of their PSUs also offer the 20+4 pin connectors.
Remember, it must fit your case and must fit your motherboard! Have a great evening.
You can start the PSU manually with a paper clip.
Remove the 20 pin connector from the motherboard, leave the four pin power connectors attached to your various drives (this will provide a load on the power supply when it start up (provided it is not faulty).
Look at the 20 pin connector with the connector facing you.and the locking clip to your left.
The fourth pin from the bottom LH corner should be a green colour wire and the next two wires (5th & 6th pin) should be black and next to the locking clip.
Straighten a paper clip and insert it into the 4th pin and into the 5th or 6th pin (ie connect these wires together). These wires connect to the front panel switch to turn on your computer. You are testing the power supply only and since it is not connected to the motherboard the computer won't start.
Now connect the power unit to the mains and switch on the mains, if the power supply is OK the PSU fan should spin up and your hard disk should also spin up. If nothing happens the the PSU is faulty.
You can test the +5volts and +12volts supply on a 4 pin power connector with a multimeter. The red wire is +5volts and the yellow wire is +12volts and the black wires are negative (ground). The voltage readings should be within 5% of these voltages.
There are other voltages to be checked +3volts, -5volts, & -12volts. but these are not as critical.
green-white for front panel Power indicator LED , Blue-white for RESET Switch , Orange-white for POWER BUTTON , Red-white for HDD LED . The berg pin header on the motherboard will have these legend printed just beside the connector or due to lack of space slightly away from it .