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Recently replaced a bad power switch on my T3508 eMachines computer. Now when I turn it on, it cuts off in 5 seconds. Finallly after several attempts, it stays on.

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First make sure your main power outlet is working fine there is not any loose connection inside outlet.
Make sure your power switch is connected with cable correctly.
Make sure your smps power supply which is square box unit on top of the cpu is fine.
Check power cable connected to cpu is working fine reconnect it.
Open cpu cabinet and reconnect all connection to motherboard then check.
Clean dust from all parts inside cpu.
Let me know if you need further assistance.
Thanks for using FixY.a

Posted on Jun 06, 2010

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Posted on Jan 02, 2017

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let me know if that works

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How do I restore bios?


If all you have done is change the CMOS battery then the BIOS should be fine but it will have been reset to default settings which may have changed the Boot device and / or boot sequence.

Go in to the BIOS setup when you power on the computer and check that you have your main hard disk drive set as the main boot device.

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Hi, can I use a Dell Silicon Image Orion ADD2-N DVI Video Card for my emachines T3508?


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Jan 05, 2011 | eMachines T3508 PC Desktop

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Hi would I be able to use an Dell Silicon Image Orion ADD2-N DVI Video Card on my emachines T3508?


Your eMachines T3508 has one PCI-Express (PCI-E x16) slot available, so yes you can use this card with it (this video card for newer Pentium 4 motherboards with PCI-x slot).

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When the computer on/off button is pressed , the CPU fan and tower exhaust fans start running, the blue light around the power button does not light and the boot up process goes no further. Fans continue...


A) When you hold a Power On button, (Switch actually), in for a count of 10 seconds, it turns the computer off.

(There is a Power On switch, located behind the plastic Power On button. Usually, the Power On switch snaps into the housing of the plastic Power On button.

Example of a typical ATX Power On switch,

http://www.directron.com/atxswitch.html

The Power On switch turns the Power Supply on.

Old computers had a metal rod, that when the Power On button was depressed, the button pushed against the metal rod, which in turn pressed against a power switch located inside the Power Supply.

The design after that, was a power switch located in the Front Panel. (Plastic front of the computer) A large cable, (Wire) ran from the switch to the Power Supply.

Now there is the Soft Power On feature. (PS_ON)

The Power On switch is a small Momentary Contact Switch. Pressing it closes a circuit. The Soft Power On circuit.

When a power supply is plugged into power, there is a constant 5 Volts (DC) present.
This is the 5 Volt Standby.

Closing the Soft Power On circuit, redirects the 5 Volt Standby power to a circuit within the Power Supply.
This in turn 'excites' the Power Supply, and turns the Power Supply on.

Sorry to be windy, but I wanted you to know how the Soft Power On feature works )

eMachines are a budget computer. As such they save the consumer money.
However in order to do this, the manufacturer will install low quality parts, in some areas of the computer.

One such part is the Power Supply.

1) ALL the LED lights combined use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts.
Depends on what Processor it is.
(Had you stated the Model Number I could have told you)

Enough power to spin fans, but not enough to spin fans, AND turn the Processor on.

Do you have access to another computer that is unused, but has a Known to be good, Compatible power supply?
It could be used for a test unit.

Tell me the Series, and Model Number of your eMachines, and I'll tell you what Wattage it should have, and what power cables, for the Power Supply.

(Some examples of Series, and Model Numbers, T1090, E4264, W2925, and so on. The T, E, and W are a few examples of the Series letter.
The numbers following the Series letter, is the Model Number)

If you wish I can direct you in removing the Power Supply, and installing the test unit. (And/Or a new Power Supply)

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Can I restore my eMachine T3508 to new without the restore Disc?


There is a good chance that you could restore the computer without the restore discs. It all depends on if there is a recovery partition built into the machine. Here is what you should do:

1. Restart your computer.
2. Tap F11 a few times before the windows loading screen.
3. Choose to restore your computer if step 2 worked.

After that your computer should be like new.

If you don't have a recovery partition try contacting microsoft and see if they can give you a copy of the operating system you are running. Just make sure you have your product key handy. It should be located somewhere on the case. Good luck.

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you can look for the power switch terminal by its label.like PW for power button and PLED for power led.reset is RS.

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The only sure way to quiet it down is to replace the hard drives with newer ones, that you have selected based on their noise rating, AND to replace all the fans in the machine with fans that you have selected based on their noise rating. I did this for my self-built machine last year and never regretted spending the money on new drives and new fans. It's SO much quieter! ;)

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