am i using to much power??

James Manns

James Manns

James Manns

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Joined
20 Nov 2009
Posts
489
hi there,
ive had a problem with a set of dual cathodes and no one has responed?
when i plug them in their fine when i turn them of with the switch but when i try and turn them on again it shuts the pc down without the psu turning of, its assif its in a choma, lol
my psu is a 750w that came with my DELL(:mad:) xps 625

heres a shot of speed to show the power usages
speedfanx.jpg


dont know whats happening, can any figure out wots up with it, or if its just a new psu in order?

thanks
 
Not sure, as much as I'm 100% sure that 700w PSU is enough to run 50 cathodes and good PC at the same time I'll be concerned about the Dell PSUs quality - they usually use very cheap chinese stuff so I guess their 700w is somewhere around 300w real power.

So yes, PSU might be the case, however knowing the nature of electric stuff it might just as well be faulty cathode or just a cable that's causing problems. Try different connector or try running it with just single cathode and see how that works.
 
i tried it with one and it did the same,
also i tried it with a different switch to see if it was faulty, still the same
a strange this is, it will switch on and of fine while the comp is loading but when the desktop comes up it turns it of like before?
im not shure if thats when the power is needed for the crossfires and soundcard ect?
 
Yeh might be dodgy PSU, as I've said Dells are crap, don't you ever buy them again !
Here @ ocUK not only will you get much better machine but lot cheaper as well : ), and we're all happy to help you with any questions regarding build or any other issues.


It's pretty hard to say but it's either dodgy cathodes causing problems or PSU itself - on the other hand I don't think 5 or 12v cathodes should make such a major problems.
Is there any chance you can try them out on different computer and see how that works out ? If there will be no issues on any other PC then it's most likely the PSU.
 
Not sure about this, I've seen in a few places that dell psu's are surprisingly good.

The solution is to stop using the cathodes.
 
well i did get the cathodes second hand but they look like their in good condition,
ill proberbly by another set and try them:)
ill have a look if i can try them on a different computer.
there only like a tenner so its not like an expensive test? i would rather spend a tenner than spend loads on a psu and find its not the psu:)
 
I would check the pins on the molex connections could be loose or moved when plugging them in, a lot of cheaper fans/cathodes molex plugs ain't as secure as they should be.
 
James Manns said:
well it plugs in fine and the power is consistant but if i switch them off then back on it turns it all off:mad:
Click to expand...

Don't switch them off/on then and that will solve the problem :)

I cannot see why anyone would want to switch them off and then back on again anyway, haven't touched the switch on mine since they were installed 2 years ago.
 
Sorry James, i didn't have time to reply to your other thread.

As JonJ has indicated - if the PC was functioning perfectly well before the introduction of the cathodes and still does when they're removed then the simplest solution is to stop using them (or turning them on and off).

The simplest trouble shooting alternative is to try a completely different set for comparison/testing (obviously this is very dependent on whether you can get your hands on some known working cathodes for test purposes.)

If the system was running without any problems before their introduction then the percentages do rather point to the *second hand* cathodes as being the cause. Obviously, there is a chance the cathodes have identified an underlying problem with the PSU - but a borrowed set of cathodes would be quick simple test.

Good luck
 
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