Zechk Posted November 10, 2007 Share Posted November 10, 2007 Hi there folks I am now the proud owner of a HX620W. However, having put my new PC together and installed it I was rather unhappy to find that it doesn’t work. The problem is this: I have installed it correctly as far as I can tell but it shows no signs of life whatsoever when I put it on standby. No LEDs on the MB, nothing. It also fails to do anything if I attempt to boot the system. Having read a few topics, I decided to try the ‘paper clip test’ (i.e. bridging the green wire and a black one) and sure enough the fan started spinning slowly and the unit clicked a little. I then took a look ‘down the barrel’ of the 24 pin connector and found that it only has 23pins. Number 18 (the white -5v wire) is missing from the block. So my question is this: Should that wire be missing on this PSU and if the answer is ‘yes’, what else could be wrong with it? Many thanks - Zechk p.s. It's also worth mentioning that I plugged my old PSU into my new MB, turned it on and the MB lights fired into life perfectly to show it was on standby and ready to boot up, so the problem is clearly with the new PSU. I used the same power lead on both and checked the fuse, it isnt that either. Link to comment Share on other sites More sharing options...
DerekT Posted November 11, 2007 Share Posted November 11, 2007 Many power supplies do not have over current protection and if your board is overvolting on a rail, then the PSU will NOT power the system on whereas the other PSU will. This means that you need to look towards RMA of the motherboard or use a power supply that does not offer such a protection. I would look to RMA though. If this is a 680i based reference design (EVGA/XFX/BFG, etc) then this issue is very likely as those boards are known to often over volt. A test. Install the PSU in a different system and see if it works well. If it does, look to RMA of that board. The New ATX standards do not have a -5 standby anymore. It has been removed from the spec. This is why the spot is empty. Link to comment Share on other sites More sharing options...
Zechk Posted November 11, 2007 Author Share Posted November 11, 2007 Many thanks mate, A test. Install the PSU in a different system and see if it works well. If it does, look to RMA of that board. I have done exactly as you suggested on a PC and also plugged the PSU into my old MB whilst it was sat on a box. Both functioned correctly with the PSU whirring away without fault. Looks like my MB is broken. - Zechk Link to comment Share on other sites More sharing options...
Zechk Posted November 11, 2007 Author Share Posted November 11, 2007 An update: It's fixed! Turns out that the MB was shorting on the case somewhere, so once I pulled it all out to do a barebones test, then put it all back in again, it worked fine :D Many thanks for the help folks. - Zechk Link to comment Share on other sites More sharing options...
DerekT Posted November 11, 2007 Share Posted November 11, 2007 This is the reason Corsair went with such a stringent over current protection. You will often find out that there is an error with a new build and be able to immediately fix it rather than not know and suffer issues later down the road, possibly when warranties are defunct. Well done! Link to comment Share on other sites More sharing options...
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