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Blackjack04
03-16-2009, 12:33 AM
Hello all,
Well many of us have probably had this before. Long story short, turned system on and fans started up but no post. Retried a couple of times but still would not fire up. After about three attempts fans not starting. Checked PSU by paper clip to green and black wires on 24 pin plug and fans started also 12v at yellow and black wire on 4 pin molex plug. PSU appeared to be breaking down under load. As this was about the limit of my expertise took the whole system to the local shop. They confirmed PSU breaking down under load but this has also somehow destroyed my motherboard. I have a UPS on the system so problem is not from an external spike.
Is it possible that when the PSU gave out it caused a spike destroying the motherboard.
My main question is can a fuse of some sort be put on the DC side of the PSU or do some PSU's come fitted with them. Any other alternatives.
The system is over 3 years old 939 pin AMD64/3500. About due for upgrade but was hoping to last until BoB
Any input appreciated.
Thanks.

Blackjack04
03-16-2009, 12:33 AM
Hello all,
Well many of us have probably had this before. Long story short, turned system on and fans started up but no post. Retried a couple of times but still would not fire up. After about three attempts fans not starting. Checked PSU by paper clip to green and black wires on 24 pin plug and fans started also 12v at yellow and black wire on 4 pin molex plug. PSU appeared to be breaking down under load. As this was about the limit of my expertise took the whole system to the local shop. They confirmed PSU breaking down under load but this has also somehow destroyed my motherboard. I have a UPS on the system so problem is not from an external spike.
Is it possible that when the PSU gave out it caused a spike destroying the motherboard.
My main question is can a fuse of some sort be put on the DC side of the PSU or do some PSU's come fitted with them. Any other alternatives.
The system is over 3 years old 939 pin AMD64/3500. About due for upgrade but was hoping to last until BoB
Any input appreciated.
Thanks.

Weather_Man
03-16-2009, 05:53 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">I have a UPS on the system so problem is not from an external spike.
Is it possible that when the PSU gave out it caused a spike destroying the motherboard. </div></BLOCKQUOTE>

I have the smoking remnants of 2 systems that died this way. Well, the first one was smoking the other wasn't. First one was using a cheap power strip and the second less than a year later was using the highest rated surge protector I could find. Both times I had a power outage, so I believe a surge killed it. I'm just crossing my fingers I don't get hit again and kill my i7. http://forums.ubi.com/groupee_common/emoticons/icon_frown.gif

Surge protectors or UPS are not always the fail-safe you might think. Especially if you've actually had a surge that it's absorbed. Depending on the severity, they may be ineffective after that and should be replaced.

Bearcat99
03-16-2009, 05:59 AM
Been there done that... I even had one wipe out a HD as well..

Urufu_Shinjiro
03-16-2009, 06:14 AM
This is why we recommend getting the best PSU you can, because when they go bad they can destroy other hardware. Now getting an expensive high quality psu does not mean this will never happen, but it's far less likely. The cheap noname psu's blow up and take parts with it all the time.

RAF_OldBuzzard
03-16-2009, 01:29 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Urufu_Shinjiro:
This is why we recommend getting the best PSU you can, because when they go bad they can destroy other hardware. Now getting an expensive high quality psu does not mean this will never happen, but it's far less likely. The cheap noname psu's blow up and take parts with it all the time. </div></BLOCKQUOTE>

QFT!

http://www.corsair.com/cinema/movie.aspx?id=622747

Would you want this PSU, or one of similar quality in YOUR system?

Blackjack04
03-16-2009, 03:16 PM
Thanks guys for info. The PSU in the system was a Thermaltake. Maybe not the best unit out there but it had been working ok for over 3 years. My original question still stands. Can a fuse of some sort go on the DC side of the PSU. I guess no as have found nothing on the net and no positive replies. Looks like a rebuild coming up, maybe i7, so will have to search for top PSU. The local shop game me some info on AcBel units. Any thoughts on these. Much appreciated .

KG26_Alpha
03-16-2009, 03:49 PM
Enermax

http://www.enermax.com.tw/

Only PSU's I will ever use and have done for over 7 years and 300 + units of varying specifications http://forums.ubi.com/groupee_common/emoticons/icon_smile.gif

Disclaimer*
There's always going to be someone with a bad unit, but not here so far !!!

slipBall
03-16-2009, 04:21 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">My main question is can a fuse of some sort be put on the DC side of the PSU or do some PSU's come fitted with them </div></BLOCKQUOTE>


I believe that OCZ may have built in protection
...edit: I just read my owner's manual and the output side fully protects your component's
http://www.ocztechnology.com/p...es_power_supply_700w (http://www.ocztechnology.com/products/power_management/ocz_fatal1ty_series_power_supply_700w)

Blackjack04
03-16-2009, 06:54 PM
Ok, thanks slipBall and others. will check out the offerings and get started soon on new build.

Urufu_Shinjiro
03-16-2009, 07:30 PM
Just so you know, OCZ does not have anything to protect power output that other PSUs do not. They are probably talking about Active PFC or Power Factor Correction, which is just a fancy circuit that can adjust the voltage to make sure it is correct.

grndragon57
03-17-2009, 10:59 AM
Here's a good site for info on PSUs. Their forums are very helpful.

http://www.jonnyguru.com/

Urufu_Shinjiro
03-17-2009, 11:50 AM
+1, JohnnyGuru is THE authority on PSUs.