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178 posts

Master Geek
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Topic # 246682 17-Feb-2019 09:53
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I have a desktop pc and I think the power supply is on the blink. I keep getting problems when turning on it won't boot I have tried another power cable and its been OK for a couple of weeks.
Just unplugged everything and tried on its own with nothing plugged in just with another monitor and it worked yesterday but today nothing.
Its a ATX 12V product number TM-350-PMSR is there any way to check it, and is it easy enough to change? Or will another 2nd hand one do the job.
The PC is Intel Core i5-3570 CPU @ 3.40GHz 3.80GHz Installed memory 8.0 GB 64 bit.


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Uber Geek
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  Reply # 2181435 17-Feb-2019 10:23
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Will just as likely be a motherboard fault. Inspect the electrolytics on mobo.


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  Reply # 2181492 17-Feb-2019 13:19
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Is the power supply fan spinning?

 

Might just need a good dust and gunge clean out, particularly also the fan over the CPU.

 

Then check every power & cable connections in case something has come loose.

 

 


 
 
 
 


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Ultimate Geek
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  Reply # 2181496 17-Feb-2019 14:04
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You could possibly try one of the Power Supply Testers listed on Trademe.

 

 


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  Reply # 2181506 17-Feb-2019 14:22
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k1w1k1d:

 

You could possibly try one of the Power Supply Testers listed on Trademe.

 

 

 

 

Dont bother, they are just crude voltmeters and will not help if the PSU is failing and just turns off under load when protection kicks in.

 

What those testers are good for is when you're making your own custom looms etc to tidy the case up and want to be sure you have the 5 and 12v the right way around before plugging a HDD in etc. One I saw didnt even have anything to test PCIe or the 8 pin mobo connector on it. Those are often separate rails so need separate loading and testing.





Richard rich.ms

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  Reply # 2181990 18-Feb-2019 13:29
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A PC re-booting itself used to be a common symptom with the older power supplies.  If the PC uses a standard size power supply it's an easy upgrade to do yourself.   Just make a note of what you are unplugging!


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  Reply # 2181996 18-Feb-2019 13:58
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Thats a Thermal Master 350W PSU - if you've got a video card installed as well or multiple spinning drives,  I'd def be looking at getting rid of that PSU and get at least a 500W. Can get them for around $70 odd at PBtech.

 

Is it a custom built PC or a branded one (such as HP/Dell etc) ?

 

 





XPD / Gavin / DemiseNZ

 

Server : i3-3240 @ 3.40GHz  16GB RAM  Win 10 Pro    Workstation : i5-3570K @ 3.40GHz  16GB RAM  RX580 4GB Win 10 Pro    Console : Xbox One

 

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  Reply # 2182015 18-Feb-2019 14:31
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@xyeovillian … if you are near Wellington I have a spare 420W PSU you are welcome to use to test things out.


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Ultimate Geek
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  Reply # 2182025 18-Feb-2019 15:06
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Any luck? 

 


+1 replace it, a cheap 350W would have truly done its dash in a few years, you're begging for hassles by trying to fix it.

 

I'd argue you're probably barely able to pull 250W from it now. Your CPU pulls in over 120W under load, not sure of your graphics, but an ancient AMD 6870 will pull 170W under load, and as your 350W isn't rated you're likely to realistically pull ~300W under load, effectively running it around total capacity whenever you've been doing anything intensive.

 

 

 

Anyway, food for thought.


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