PSU Troubleshooting Help

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Frazzlez

Commendable
Jun 28, 2016
1
0
1,510
Hello all. Basically I think there is something in my rig that's making my PSU go bang.

The system was built with bits from friends and was stable for about 9 months until one day I went to boot it and it was dead. Did some research and decided a new PSU was the way to go.

Grabbed a new 550W PSU and after 2 days that one literally exploded. Sparks smoke everything. Have I just been unlucky or is there something that might be causing this?

System:
Gigabyte GA-990 XA-UD3 MoBo
Hyper X 8GB DDR3 RAM
9800GT 1GB GPU
Newton N1000P (OLD PSU)
Ace A550BR (NEW PSU)

Thanks.
 
Solution
geofelt
You are lucky if the psu failure did not damage other parts.

A cheap PSU will be made of substandard components. It will not have safety and overload protections.
If it fails under load, it can destroy anything it is connected to.
It will deliver advertised power only at room temperatures, not at higher temperatures found when installed in a case.
The wattage will be delivered on the 3 and 5v rails, not on the 12v rails where modern parts
like the CPU and Graphics cards need it. What power is delivered may fluctuate and cause instability
issues that are hard to diagnose.
The fan will need to spin up higher to cool it, making it noisy.
A cheap PSU can become very expensive. Do not buy one.

Here is one list of psu quality...
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geofelt

geofelt

Titan
Oct 9, 2006
54,295
4,145
174,240
You are lucky if the psu failure did not damage other parts.

A cheap PSU will be made of substandard components. It will not have safety and overload protections.
If it fails under load, it can destroy anything it is connected to.
It will deliver advertised power only at room temperatures, not at higher temperatures found when installed in a case.
The wattage will be delivered on the 3 and 5v rails, not on the 12v rails where modern parts
like the CPU and Graphics cards need it. What power is delivered may fluctuate and cause instability
issues that are hard to diagnose.
The fan will need to spin up higher to cool it, making it noisy.
A cheap PSU can become very expensive. Do not buy one.

Here is one list of psu quality.
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html
 
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