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

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Computer wont turn on

I bought a new pc today i got it home turned it on it was fine turned it off came back. when i went to turn it back on the i had not touched the button or the pc yet and a big blue flash came from the power supple and a loud bang and now it wont turn on what could be wrong?

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Re: computer wont turn on

Big blue flash! I would say one or more of the filter capacitors just blew up! time for a new power supply. the AC goes into the unit and a surge suppressor is across the line - looks like an orange colored disk - from there it goes to a step down transformer to a multiple output secondary. on the secondary there are numerous "bridge rectifier" circuits that take the AC and change it to usable
dc. That DC is filtered with large capacitance capacitors. I have a site if I can still find it that has large wattage power supplies. I'll find it and get back to you.

Posted on Dec 15, 2007

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Power supply unit gets power as light on the back shows but pc wont turn on. Have tried differnt PSU and pc turned on but have had unit checked and they said the PSU is working fine. Cant fit standard PSU...

Try this to get it at-least back on with your PSU that fits in the case. open up your computer case, locate your power supply. With the AC cord still plugged in , unplugged the connectors to your motherboard from the PSU and wait about 10secs. Then replugged them in. This should power on your PC.
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Hi. i bought my acer aspire 5583 3 years it suddenly can not be turned on... last 2 weeks i still can play it..but one week later when i came back from holiday...i found out sth wrong with my...

This is just a suggestion ... try removing the battery and turning the computer on with only the mains power lead attached.

Sometimes, as the battery dies, it does silly things with the computer.

If it works, order a new battery.

Hope this helps,


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After a power outage computer will not turn on

first of all what kind of computer is i mean brand? secondly sounds like the power supply went bad..

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Try connecting a different power supply to it. If the same situation repeats, then it's an internal (motherboard) problem. If the problems go away, then the power supply needs to be replaced.

6 years... I'm surprised the PSU even lasted that long! The power supply is the cheapest part of the PC and usually one of the first parts to fail. Don't worry, a replacement power supply is not too expensive. Good luck!

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Try to change your power supply for having some test.

This is were you know that your CPU is working.

Just pray that only your power supply is damage.

Good luck!

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Try unplugging the cord from the back of the computer for about 5 minutes and then try it again

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1. Remove all USB devices such as printers, mp3 players etc etc.
2. Remove the power-cable and the battery
3. Press and hold the power button for 30 seconds
4. Put the power-cable back in but not the battery and none the USB devices.
5. Turn the computer on

Also check the condition of the USB ports if it doesnt work and the fuse. If this doesnt work then I would recommend a repair.

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My pc wont turn on no lights or anything

I would HIGHLY recommend ordering online. Definatly use  it has to be the best computer parts online store.

there is a link to all there power suiplies, if you need more help post the type of computer you have.

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4 Answers

Computer wont turn on

So, lets say that you have double checked all cables, and everything is plugged in properly. When you hit the power switch on the case, do you hear the computer start then shut down several seconds later? Does the computer refuse to do anything but power a motherboard LED? Also, did the computer (or the person carrying the computer) bump into anything while moving it? The most minor bump can cause many problems.

I would try replacing the power supply with another one from a working PC, but just to make sure that the power supply unit is the problem. If it isn't, make sure all heatsinks are locked down appropriately and making full contact. Other than that, I don't know what you can do.

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1 Answer

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power supply is probably shot and you are feeding a voltage way over what is needed. I have a dell that refused to operate one day. I went to www dot affordablesurplus dot com and found a 350 watt power supply with all the RIGHT plugs. Never had a problem since.

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