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Question about replacing Dell PSU, please help!

shaunoc1

Hi everyone -
I own a Dell XPS 420 desktop tower. Recently, the fan in the PSU started making a lot of noise (it's intermittent; if it starts from cold it always happens; two restarts and it stops).

I read that it's probably dust in the casing, and after consulting with an IT repair shop, they recommended that I get the whole tower cleaned out (which cost 100 euros), but the problem remains.

So I presume I need to get a replacement PSU, and I'm finding it very difficult to get any consensus opinions on what to get. I've been told that I need to get a Dell-approved one specifically for the XPS, but that can't be right, can it??

This PSU database website gives the following details for a PSU on an XPS 420:
http://www.power-on.com/ea460u.html
(except mine is a 425W, here is a photo of the specs sticker on it)

The one I was going to buy to replace it is this:
http://www.komplett.ie/Komplett/product/power_supplies/20088025/corsair_builder_cx430_v2_430_watt/details.aspx

All the dimensions etc look the same, so I presume that it's standard. I know that there's a protocol in swapping them, I'll get someone more knowledgeable to do it, but are they swappable? Is it a problem that there is a slight difference in the wattage etc?

Any help would be greatly appreciated!!

Shaun

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shaunoc1

No, I don't need the floppy connector.

Regarding mounting space, this was posted earlier in the thread, is it relevant?

http://en.community.dell.com/owners-club/xps/f/3681/p/19358754/19797776.aspx

spix

They should fit fine then according to that thread!

shaunoc1

Also, from
http://en.community.dell.com/dell-groups/gaming/f/3344/p/19265921/19455492.aspx

"I ended up getting a Corsair CMPSU-750TX. I've had it for over a year now and it works great. .. First, the stock power supply in the XPS 420 is a bit taller than the standard power supply, but all of the screw holes still line up, you'll just have a small amount of space open in the back, which isn't a big deal."

The dimensions on the replacement one from
http://www.power-on.com/ea460u.html are:

Dimensions: 140L x 150W x 86H mm (5.5" x 5.9" x 3.4")

...Which seem to be standard with the Corsairs and OCZs. The length varies in some, but that wouldn't make a difference in terms of mounting it...

shaunoc1

One final question:

This is the PSU I have at the moment:
http://www.ebay.ie/itm/B6751-Dell-L425P-00-425-Watt-Power-Supply-PSU-PS-7431-2DF-LF-TP728-/380467415485?pt=UK_Computing_PowerSupplies_EH&hash=item5895a009bd#ht_2411wt_1397

And this is the one I think I need to get:
http://www.dabs.ie/products/corsair-500-watt-cx500-v2-builder-series-80-plus-power-supply-7K9H.html?src=3

One of the connections on the Corsair has 'detachable pins' which I think make it compatible with my motherboard. (1 x power 8 pin EPS12V with detachable 4 pin ATX12V section).

I'm fairly sure that everything else is compatible, does it all look ok??

Monotype

Yeah, detachable pins are for splitting the 8 pin into 4+4 and the 24 into 20+4 for older boards.
The ZT & XFX would be higher quality units than the CX.

shaunoc1

Brilliant. I'll order one of those so and see how I get on.
Thanks for all the help with this!