D2046 emachine,put in new 360w power supply with 20 pins.when try to turn on, the power button and fan on cpu flash and move a split second then nothing.noticed that the 20 pin connector only has 19 wires to it,is it suppose to have the full 20? could my motherboard be bad?
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the sound you are hearing or heard could have been power surging through a powersupply unit that just blew.. hopfully it did not effect any of the other hardware..to trouble shoot this you can do one of two things..1 disconnect the 20/24 pin powerconnector from the motherboard 2 disconnect the cpu power connector 3 disconnect the 6pin power connector from the graphics card if there is one some machines have onboard video chipsets if thats the case then no worries 4 disconnect the Harddrive power 5 jump the power supply to see if you get any power from it any questions on that go to youtube and type in how to jump a power supply... or option 2 is buy a new power supply make sure its 80plus certified and replace it...i know its a lot of work but i hope this has helped you
Ok, test the power button pins. First disconnect any power source to the computer. Then, find the power pins on your motherboard (the one that your case's power button connects to. Usually two wires, one red and the other black). Grab a jumper a connect it to those two pins, they usually have the letters "pwr" or "power" printed next to them. Then, once you've done this, with the jumper connected, connect the power cord to your power supply. It should turn on by it self. If it does, then the problem is the power button. If it does not do it, then the problem is the motherboard. Good luck.
I would recommend rechecking your connection to the motherboard. All wires from the power supply to board and making sure the front panel switch connection are correct. Also, make sure the power supply is compatible to the motherboare. even though a 20-Pin ps will connect to a 24-Pin board, it still does not work. Good Luck
If the power supply from your friends old computer may not fave all of the correct plugs to power up your computer. You system needs 2 plugs going to the motherboard one with 20 pins and one with 4 pins. Besure you have the correct plugs. The second thing to check is recheck the friendss power supply in another machine. Last option is that when your power supply overheated and died that it damaged your motherboard and you may have to replace it too.
Over 21 years of PC and printer support/service
It's hard to troubleshoot a power supply. They are very dangerous and contain electricity for some time after turned off. If your new one isn't solving your problem it makes me think it's not the power supply unless it's not powerful enough. Try this:
Open your case having your "CPU & HEATSINK" in sight. You can lay your case on its side if its easier to see this. Power up watching only the cpu fan located on or in the attached device over your processor (cpu). If it doesn't turn then that is likely your problem. CPU is overheating which automatically shuts down system. Pls. make sure both 20-24 pin and 4 pin plugs from power supply are tightly plugged in mother board before you start.
If it is working try another power outlet in your house. Sounds odd but is a known issue.
Could be a few more things but these are most common.
Let me know pls. your results.
Did some research and found this site which will tell you which pins to test. It is possible also that its not powerful enough for the devices you have. I would try again only giving power to the motherboard pins, of coarse and the hard drive. If works then plug one device at a time.
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.