Question about Antec TruePower Trio 550 (TP3550) 550-Watt Power Supply

2 Answers

Pc wont turn on

When pc switched on key board lights flash once, optical mouse light comes on,but pc does not power up. tried different psu (new one) and tried bypassing on/off switch.any other ideas please

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  • howie p Jan 18, 2008

    still no change. power light not coming on or fans, or much else apart from mouse light

  • howie p Jan 18, 2008

    no beep, moniter in sleep mode (blank screen, flashing green light)



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Do you read something at your monitor when pc starts?
can you open Bios setup pressing DEL ?
If you dont see anything on the screen perhaps there is faulty graphics card or display monitor.
do you hear any beep-beep when push power on?
observe and describe what happens when pc starts.

Posted on Jan 18, 2008

  • Kleanthis Mavropoulos
    Kleanthis Mavropoulos Jan 18, 2008

    make sure your graphics card is well fitted in the slot and monitor data cable connected to the card.

    Also check all cables from PSU to motherboard to connected correct.(unplug- plug again)

    if is posible to check that monitor is ok connected to another pc would help . the same for the graphics card.

    Was this pc working before or just try to assemble it?


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Removed hard drive, floppys , extra memory all pc cards
everything you can and try it again

Posted on Jan 18, 2008

  • Cary Farah
    Cary Farah Jan 18, 2008

    you have a bad power supply



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Wont post.

Try a few things for me OK? From what you typed, turned on the psu "the toggle switch on the psu", pc seemed to be starting up. I need you to keep the toggle switch on the power supply in the on position. Press and hold the start button on the PC case to shut it down. Give it a few seconds & power up by pressing the power switch on the case. Notice a differance? Next, unplug everything connected to the pc expect the monitor, mouse & keyboard. Try to boot. Still no? Remove the side of the case exposing the board. Turn the psu off by flipping the toggle switch on the psu, wait till the green light on the board goes out. Grab the Mb ( I know it's tight in there) and see if you can move the board in any direction. Not loose? Re-check all data & power connections for a solid connect. Re-check your case to Mb connections. Also check the PSU, there is a red slide switch it should be set to 115v. Post your findings..

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