It has one green light illuminating on the mother board. has power on the green and purple wires at the 20 pin mother board connector at 5v each. I assume the yellow and/or red wires that connect to everything from the power supply are supposed to have some voltage on them when plugged in but they do not. The fuse is good in the power supply case but i assume it could still be faulty. thanks
The yellow wire carry 12 volt while the red one is 5 volt. But to check the voltage you have to unplugged all the four wires connectors (yelow, black, black red) and measure them one by one. If you say that they don't have any voltage on them then you have a faulty power supply. Replace it to solve the problem. But if during unplugged your have the correct voltage read then it could be one of your device faulty. Normally your CD-ROM drive or floppy drive or HDD.
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it say that you have a critical failure it can be power supply ; CPU ; memory or motherboard to test your power supply:
1 unplug it from motherboard 2 on the ATX conetcor (P1 with 20 or 24 pin) use a wire to link green with a black wire 3 with a voltmeter verify that yellow have 12V ; red and purple 5V and orange 3.3V (nearly)
for the CPU and memory modules you can change it and test(only 1 memory module is enouth) or test it on an other mother board (must be compatible)
and for the mother board test on an othr hardware that work (if previous test was passed it's the mother board)
look on the mother board,, with it on its side,, power button facing you.. On the Mobo look at the bottom left were all the other small plugs are. that come out of the face of the computer.. it should be marked PWB or SW
Good day sir, let try to test first the power supply, Unplug the power cord, remove the 20 pin (24 pin for the late model) molex power connector from the motherboard, plug in the power cord, get a 2 to 4 inch jumper wire, short the green wire with any of the red or black wire on the molex 20 pin power plug, the result maybe the following:
you will see the power supply fan turn. you power supply is in good order. replug the power supply, and test again.
you will see the fan turn for a few second then stops. you power supply is selective, and may require a different type of motherboard. Get a new one.
you wont see the fan turn at all. get a new one.
If in case you are with #1. uinplug the power cord and remove all the expansion cards, data cables from the hard disk and cd drives. we are trying to isolate the problem. make sure that the only connected cables on the motherboard are as follows:
20 pin power cable.
4 pin 12 volt power cable (if applicable)
Test the pc once more. plug in the PC. If still the board wont power on. problem with your motherboard. Note:make sure your RAM is good. Hope this helps.
Did you try to open your CPU casing to find the socket in your motherboard witch is totally fix with the power switch wire. The power switch wire are two forms, there is a 20 pins and 24 pins. If your power switch socket is only a 20 pins, you need to put only the 20 pins.
The 24 pins is not totally combined in power switch wire. If your motherboard power socket contains only 20 pins, so remove the 4 pins in your power switch wires. "Good luck!!"
The motherboard in your computer is an MSI MS-7145, which is also called RS480M. You can download a copy of the manual here. The front panel connections are on page 2-20.
Looking at the header JFP1, pins 1 through 9 (odd numbers) are the front row, pins 2 through 10 are the back. Pin 10 is the missing pin. The power switch connects to pins 6 and 8. The power LED connects to pins 2 and 4. The HDD LED connects to pins 1 and 3. The reset button, if used, connects to pins 5 and 7.
Unplug the power then unplug the 24 pin power connection from the mother board and take paper clip bend it so you can insert it into the holes where the green and the black wire are next to each other, Next you will need a multi meter. Set the multi meter to read dc volts 20 take the red lead and put it into the purple wire hole of the 24 pin connection and the black lead in to the hole with the Black wire on the 24 pin connection. the reading on the Multi meter should read 5.0 volts if it does not and you get a reading of 6.01 or higher then the Mother board has been burnt out and you will need to replace the motherboard and power supply I have been a onsite tech for E-machine for the last 5 years and this has been an ongoing problem with the power supply.
they have to be plugged in horizontally although it is possible to plug them in vertically because the pins are evenly spaced either way. they are color coded just not like you would expect for example one plug has a green wire and a white wire the green side goes to the green pin and the white side goes to a green pin with a white cross you have to look close because there are several green pins which is what threw me off do this with all three plugs
Could be either one, or it could be the toggle switch.
Start with the easiest first to check. Unplug the power toggle switch from the mainboard and take a screwdriver or something and short out those two pins to see if it starts the pc. if it does, then your pc case switch is just bad.
If that's not the problem, check the power supply next.
Jumper the ATX 20 pin power cable's green wire to any black, just to make sure the power supply is working. The fans in the power supply will turn on along with anything else hooked up.
To jumper the power supply use a section of wire or a bread twisty (with the insulation removed from the ends) and just connect the green wire to any black wire on the 20 / 24 pin power connector. Make sure that the power switch on the back of the power supply is switched on.
If neither of those seem to be the problem, then most likely it is the motherboard or the processor.
Did you just add the second CD? If you did you may need the driver for the mother board? Make sure the power cord for the cd has voltage plug it into the DVD drive also check the cable make sure red stripe is on the correct side of drive. You can download the driver at http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T-Series&model=T2672
User guide is there as well.
The start button has a pair of wires with a small pin connector on it. This will connect to the motherboard if there is a 3 pin set you might try moving to the other pin. The new power supply also has to provide a start voltage? Your power supply may not be compatible or it may put the voltage on the third pin.