Question about Hi-Pro (HPP303W) 300-Watt Power Supply
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Posted on Jan 02, 2017
If the power box is bad, The computer will not come on. if you only get a green light, you would need to start with replaceing the power box, if you get a new one and the same thing happens, then the mother board is bad too.
Posted on Nov 27, 2007
Check the cooling fan on top of the CPU heatsink. OK you have to remove the side of the PC but it is a common problem, easily checked.
Cover off blow hard on fan and it should turn freely if not replace. It is the ONLY fan that has to work for the PC to start. That does NOT mean that it is the only fan you need or should have.
Posted on Aug 16, 2009
Yes, it does.
More than likely Electrolytic Capacitors, have gone bad in the power supply.
Electrolytic Capacitors are used in the Input, and Output stage of the HiPro power supply, as Filters.
In the Input stage they filter the incoming AC voltage.
In the Output stage they filter the rectified AC.
(AC is rectified into DC. The capacitors are filtering DC at this point.
AC = Alternating Current
DC = Direct Current
A flashlight battery is an example of stored DC)
The HiPro power supply you have produces three main voltages. Three voltage Rails.
When Electrolytic Capacitors go bad, or are failing, there is a weak voltage rail.
HiPro power supply's are cheaply mad.
1.The wiring is too small. (The gauge of the wire is below standards)
2.The Electrolytic Capacitors are of low quality.
3.The rectifier bridge has cheap diodes, and too small of a heatsink.
I could go on, and on.
When you have a power supply with a weak voltage rail, there is not enough power for the Processor.
1.ALL the lights use less than 1 Watt.
2.EACH fan uses 2 to 3 Watts.
3.A typical Processor can use 55 to 125 Watts!
[Depends on what processor it is.
This is why lights - light, and sometimes fan's will spin, but the computer won't run.
Not enough power for the Processor.
Replace the power supply.
Viewing this link,
,you can see the HiPro D3057FR3 power supply has just the usual ATX shape, and size.
The ATX 'Form Factor' power supply, is used in approximately 90 percent of computer towers.
[Form Factor usually denotes towards a motherboard. An ATX form factor motherboard is 9.6 inches by 12 inches. Form Factor means the size, and shape.
The Form Factor designation, has been used towards certain hardware parts in a computer, as well as the computer case, but this is erroneously used. It does make it easier to identify with, though. That's why I used it here]
Point I'm getting to?
1.See if you have another Known, GOOD, ATX power supply to use for a test. Test my statements above before you go out, and buy another power supply.
Do you have another computer that has a good power supply, but may have other issues, that you can borrow the power supply out of, to use for a test?
Another thing. This manufacturer overstates the actual rated Wattage. The actual wattage is more like 70 percent of what is stated.
They state 300 Watts - Maximum, but in reality it is more like 210 Watts.
It is for this reason, and the reason that components used in the above power supply are cheap, that I would recommend buying a different power supply, than buying another HiPro.
(Therefore,.NO, I do not recommend the one in the link above, as a direct replacement)
What power supply that fits your needs would I recommend, that is a decent quality power supply, and won't break the bank?
OCZ StealthXStream 400 Watt.
Because it has 80 percent of the true rated wattage.
320 Watts actual.
Because it is reliable.
Because it has all the power cables you need.
Because it is $28 USD after the rebate.
I'm sticking my neck out recommending a particular power supply here, as this goes against our TOS, but if you have no background in this area, how are you going to know what to look for?
I am not recommending the website. But I have used them repeatedly, and always to my satifaction.
Posted on Nov 27, 2009
Your problem may not be related to the power supply. Sometimes it's something wrong on the board.
There could be many things that could stop the board from turning on, Determining if it works is like detective work. What I do, is take everything off the board to start. Then add the minimum to start a board to see if it will start. That's one drive (cd or otherwise) the CPU, and one bank of memory. (that's not a required eliminate, but it helps avoid beep codes) Also, make sure you have your pin's set on the board absolutely correct, or that could be your problem to begin with. Also, if your going to load a ide drive, make sure you set your pin setting correctly on it. Now, you should get the power supply on, and the cpu. If those don't power up, it's then either one of the five elements. The CPU, Power supply, Ram, Drive, or the motherboard. The next step is to replace each one of the first four to see if you get any change. If no change, then I usually get another board that I can test the first four, and make sure that they work. After that, then I say you have a DOA Board
Good Luck and don't forget to leave a rating.
Posted on Dec 07, 2009
Testimonial: "Many thanks. My PC has been working for 2 years. Two days ago, It powered itself off & couldn't be powered up again. will follow your great advice!!"
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