Question about E-Machines T6528 PC Desktop

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T6528 has no video. Using a working monitor, tried differnet video cards but still no video.

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  • E-Machines Master
  • 5,660 Answers

1) So you tested the monitor on a working computer? Reason I ask, is that you will be testing the monitor cable also.

If it is a monitor with a detachable monitor cable, suggest you test the cable also.

2) Each graphics (Video) adapter card has it's own specific driver.
The driver should be installed Before, the graphics card is installed.

Otherwise Windows will 'break it's neck', to find a compatible driver, from it's thousands of generic drivers.
Won't do. You will get a driver conflict.

Windows: 'Which driver do I use? These or THESE?"

Kinda' hard to do, since you can't see graphics on the monitor.

I would like to suggest you diagnose the Power Supply to start with. (After checking the monitor cable)

It may seem that the Power Supply is okay, but it could have a weak Voltage power rail.

Enough power to light LED lights, and spin fan's, but not enough power to turn the Processor on.

1) ALL the LED's 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.
(Lower for older Processors)

The eMachines T6528 comes with an AMD Athlon 64 3500+, processor, that fits in a Socket 939 processor socket,

1) eMachines Support > T6528 > Specifications,

http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T6528

2) Information on the AMD Athlon 64 3500+,

http://en.wikipedia.org/wiki/List_of_AMD_Athlon_64_microprocessors#Athlon_64

Can use up to 67 Watts, or up to 89 Watts. Depends on what Core it is.
(Clawhammer Core, Newcastle Core, Winchester Core, Venice Core, Manchester Core, or San Diego Core)

(Also uses an MSI K8NGM-L motherboard. Below for specifications only,

http://www.newegg.com/product/product.aspx?Item=N82E16813130041 )

A) Not to down eMachines, (I have an old T1090 in my shop that works great), but they are budget computers, and use budget parts.
One being the generic Power Supply that is used.

B) The computer could be dirty inside, as well as inside the Power Supply.

The cooling components for the SMPS, (Switched-Mode Power Supply,) are it's Fan, and Heatsink's used inside.

Once a layer of 'Gunk' covers these cooling components, the cooling capacity drops tremendously.

Heat = Wasted Energy

The more heat, the more the Power Supply strains to keep up with the call for power.
Eventually hardware components inside the Power Supply fail, and the Power Supply is toast.

You can test the Power Supply voltages.
You can use a multimeter if available, or an economical unit can be purchased for around $5 to $12, that will suffice for testing.

You can also use a power supply tester.
One example:

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5250576&CatId=5471

Voltages produced by the SMPS used in a T6528 are,
A) 3.3 Volts (DC)
B) 5 Volts (DC)
C) 12 Volts (DC)

Testing should be done on the 12 Volt power rail.
11 to 13 Volts indicates a good Power Supply.
Less than 11 Volts means it's time to replace.

Orange wires are 3.3 Volts
Red wires are 5 Volts
Yellow wires are 12 Volts.

All the color coded Voltage wires, lead back to one individual power rail, for each Voltage produced by the Power Supply.

You can test any Yellow wire to test the 12 Volt power rail.

With a multimeter, the Positive (Red) probe lead connects to the power wire to be tested.

The Negative (Black) lead connects to ANY Ground wire.

ALL Black wires are Ground wires.
They all go back to one central Ground source inside the Power Supply.

[Power Supply unplugged from power before attaching probe leads. After connecting, the power supply is plugged back into power, and the Power On button is pushed ]

(Two C cell flashlight batteries produce 3 Volts DC)

Posted on Jun 20, 2010

  • joecoolvette
    joecoolvette Jun 20, 2010

    Edit:

    Also should have stated that you can use a KNOWN to be Good, Compatible power supply, for a test unit.

    Compatible:
    The power supply type is ATX.
    Case size is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall.

    You need the correct power cables, and the correct amount.
    1) It's been stated that the eMachines T6528 comes with a 20-pin ATX main power cable,

    http://www.playtool.com/pages/psuconnect...

    The K8NGM2-L motherboard has a 24-pin ATX main power cable connector, on the motherboard, and IMHO should use a 24-pin ATX main power cable,

    http://www.playtool.com/pages/psuconnect...

    Those extra four power wires, deliver needed power when adding a graphics card.

    Just came back to post this, in case you had a working Power Supply in an unused computer, that you could use for a test unit.



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If you took the pc in to a repair shop and they diagnosed that as the problem. You will have to install the new vieo adapter in the computer. Then plug in the monitor to see something on the screen. You can go into the bios to disable the other. Now if you are going by hear say and an actual tech did not check your system it does not necessarily have to be the video adapter at fault. You will need to have it checked out to validate that. Now if you did install the card you will have to plug the monitor in the new adapter. If the problem is still there you have another issue with the pc. Please comment on what the case may be. I would be able to better help you.

Hope this helps you

 

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