Solved PSU question. (May require good knowledge of electronics?)

October 30, 2012 at 01:05:58
Specs: Linux i686)
I have a quick question, I'm pretty experienced in PC hardware and doing basic electronic work, well recently my Xbox 360 power supply went up and since I'm a few weeks off getting paid to buy a new power brick for it, I did some searching online and found out that you can run it off a PC power supply with some soldering/etc, so long story short I do have that running and it runs fine (I've run it for well over 8+ hours straight with netflix/hulu/gaming sessions this past weekend just to test it out), but to get the the problem:

My main concern is leaving the PSU on, is it safe to leave it on even if there is no load? (IE, the xbox itself is turned off) - I'm just wondering because my Xbox is set to power off after an hour or so of inactivity, which happens a lot with me (I'll turn it on watch something for 30 minutes and leave and not know when I'll be back) and usually this wasn't a problem, but now I'm more concerned about it, simply because I've heard a PSU with no load can cause problems.


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#1
October 30, 2012 at 03:09:13
I don't think that will cause any problems. When you shut down a PC, that does not turn off the PSU unless you unplug it from the power socket - - and how many people bother to do that?

You are much more likely to damage a PSU by putting too much load on it than by simply leaving it connected to the power supply with no load.


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#2
October 30, 2012 at 03:32:16
If the voltage is messed(increased by mistake) it can damage the components. My extension has on & off button so there is no need to unplug.

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#3
October 30, 2012 at 06:27:36
✔ Best Answer
"My main concern is leaving the PSU on, is it safe to leave it on even if there is no load?"

Generally no. However, some PSUs have built-in "no load" protection & will automatically shutdown. Other have "No Load Operation" which allows them to run without a load.

http://www.hardwaresecrets.com/prin...

From the ATX12V v2.2 design guide:

3.4.3. No-load Operation
No damage or hazardous condition should occur with all the DC output connectors
disconnected from the load. The power supply may latch into the shutdown state.

http://www.formfactors.org/develope...


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