Turn pc on, tick...tick..tick from PSU? what to do?

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Megatron_lives

Thread Starter
Joined
Jul 24, 2011
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12
Hi all


I was trying to install and new SATA card to my folks HP XW4600. Everthing fine then...the computer powered off!

I turned it back on and all that happens is the fans spin a little, a crackle is heard from the speaker and a ticking sound (every ~4 secs) comes from the PSU. This continues untill I unplug the desktop.

I've unplugged the fans from the PSU - no change. Unplugged the hard drives/dvd from PSU - no change.

Only after unplugging the motherboard do I get a change; the DVD and hard drive are making the noises expected as the system boots and it sounds fine - obviously, as soon as I plug the motherboard back into the PSU - it dies!

What I'd like to know is:

1) is it the PSU? - I don't think so, must be the motherboard. If so..
2) can I just buy a motherboard for a HP xw4600, replace it and see if that's the culprit? If so, I've never replaced a motherboard before. Are there obvious problems I should be aware of?
3) Is it something else?

thanks everyone, as always, any advice is good advice

Cheers

Mark
 
Joined
Nov 21, 2004
Messages
2,536
I dealt with a "ticking" PSU only last week on my son's PC. It co-incided with the PSU's fan playing stop-go, although the actual ticking came from the circuitry behind the fan. A visit to a PC parts shop and an hour later his PC was fine -- new PSU. I took the opportunity to fit a slightly more powerful PSU than the faulty one too.
 

crjdriver

Moderator
Joined
Jan 2, 2001
Messages
43,453
I checked the specs on that system and it shows 4 sata ports on the board. Why exactly were you installing a sata controller card?
I was trying to install and new SATA card to my folks HP XW4600. Everthing fine then...the computer powered off
It is not clear from your post however the system was completely unpowered when you installed the card correct ie it was not ON or plugged in.
 
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