80Views7Replies

Author Options:

Possible replacement PSU for PC? Answered

I am fixing a PC for someone and I believe the power supply is dead. I have been looking for a replacement but can't find one exactly the same. It is also from a 'slim' model PC so the psu is smaller than normal. Here are the specs of the original:
Input=100-127v ~6A, Output=220W, +3.3v=13A, +5v=14v, +12v=14A, +5VSB=2A, -12v=0.3A. I was wondering if this one on ebay could replace it. Do the Amps and wattage need to be exactly like the original?

Discussions

0
None
steveastrouk

Best Answer 5 years ago

It should be fine. Don't choose a supply with a LOWER power rating than the one you're replacing.

0
None
Arya42steveastrouk

Answer 5 years ago

I found a psu that is 250w, and all of the amp ratings are sightly higher than the original. The only difference is in the input rating, which is 110-240v~5A, where the original was 100-127v~6A. Coeld this cause a problem? Sorry for all the questions, but I am new to this so I want to learn what to look for on computer hardware.

0
None
steveastroukArya42

Answer 5 years ago

That will be fine. Its just a more efficient supply than the one you chose before

0
None
Arya42steveastrouk

Answer 5 years ago

Oops, didn't notice it was missing the SATA cable. I found a new one that is 250w but the amps for +3.3v and +5v are a little (one value) lower than the original. Is this bad?

0
None
steveastroukArya42

Answer 5 years ago

Get a SATA extender...but it probably won't matter anyway

0
None
Vyger

5 years ago

Often with those power supplies the fans go bad because they have cheap bearings then with no cooling the unit burns up. Check for a MTBF number (Mean time between failure) in hours if they have a higher hours number that usually means they have better fans. It might cost a little more but it will last a lot longer. So it probably didn't fail because of not having enough capacity but more likely because of not having enough cooling or the other big killer of Power supplies, voltage surges.

0
None
Arya42

5 years ago

Thanks for your quick reply. I think I will get one with more wattage as this particular pc model is known for having dead power supplies. Just one more question: if the original had +5v at 14A and a new one had +5v at 12A, would this be too low? Should the amps rating be the same or higher on a new psu?

0
None
steveastroukArya42

Answer 5 years ago

I would think it would "probably" work with a 12A supply. Ideally the new PSU would have equal or greater current capacity