Computer PSU wanted

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Computer PSU wanted

Postby M0CEM on Mon Feb 12, 2018 6:23 pm

The PSU has stopped working in my computer. It is an older ATX type, (Earthwatts EA380) with the following connections in use:
Motherboard power - 1 x 24pin (2 rows of 12 with one pin not used), and 1 x 4-pin square "ATX12V"
5 x 4-pin power plugs, old type, for DVD, video card, old ATA disk drives etc
1 x SATA power plug for main disk drive

The modern replacements all look like they are for the latest motherboards and may not be suitable. The board is an ASUS A8N. It seems that an "ATX standard PSU" comes in all sorts of different versions!

Does anyone have a spare PSU that is likely to fit?

My PSU is failing to start, the the fuse and rectifiers are OK, the fan doesn't run, I can't see any bulging electrolytics and although it's mainly SMD, I think I've found the startup supply resistor and it measures the correct value as marked. I have a spare motherboard but would like to swap the PSU first as I think that's where the failure is.

The only spare PSU I have is for a Dell and I think they have non-standard wiring, definitely NOT going to try plugging that in ...

By the way, whoever put the MKARS website & message board together did a good job, I've just discovered that it still works perfectly with an ancient Win 98 PC!
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Re: Computer PSU wanted

Postby 2E0VZK on Mon Feb 12, 2018 9:35 pm

That sounds like a normal PSU to me, you should be able to just get a replacement?

As for the website and forum, yeah they are quite out of date, thats why they still work ;)
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Re: Computer PSU wanted

Postby M0CEM on Mon Feb 12, 2018 10:53 pm

Thanks Daniel, I will take another look.
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Re: Computer PSU wanted

Postby M0CEM on Tue Feb 13, 2018 12:05 am

Well, I have ordered a PSU that I think will fit. According to the info, the 8-pin MB connector is 2 x 4 pin types that can be clipped together or used independently, so hopefully one will fit my 4-pin socket...
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Re: Computer PSU wanted

Postby 2E0VZK on Tue Feb 13, 2018 9:19 am

Yes thats correct. They usually have different combinations.
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Re: Computer PSU wanted

Postby M0MMZ on Tue Feb 13, 2018 10:21 am

Sorry, only just spotted this.

If you need one Dave, I can bring one with me on Monday. Got loads of stuff like that stinking around here.
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Re: Computer PSU wanted

Postby M0RBD on Tue Feb 13, 2018 5:38 pm

You should be fine...

I've used a recent PSU on a far older motherboard (20pin)... The 24pin connector is essentially the 20 pin connector + 4 pins for additional power... That hasn't really changed to this date.
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Re: Computer PSU wanted

Postby M0CEM on Sat Feb 17, 2018 3:39 pm

Thanks for all replies, now working nicely again on a new PSU that will also be usable when I eventually upgrade the rest of the PC.
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Re: Computer PSU wanted

Postby 2E0VZK on Sat Feb 17, 2018 3:41 pm

Awesome, its good when you upgrade with a part you know you can reuse in a new box at a later date.
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