My working PSU doesn't work!??!

[Pedro Lambrini]

I have built a PC out of bits lying around my house. I put all the bits together but without a PC case as I don't have a spare one. I connected the power cord and nothing happened. The PSU didn't power up at all (no fan whirring or anything) so I tried a second PSU and again nothing. Both these units used to work fine I only replaced them with higher rated PSUs as my PC became more power greedy. Can PSUs just stop working if they are left in a (dry) cupboard? Is it that the PSUs need to be fitted in case, maybe to ground them or something?? I used to use a PC PSU on my old Amiga 1200 outwith a PC case and never had this so I'm doubtful but you never know!! Can someone please shed some light on this for me?!?!?

 

[Vertigo Acid]

Did you turn on the computers once the PSU was connected? As in using a switch or screwdriver or something on the connector on the motherboard?

 

[Pedro Lambrini]

Err, no! I didn't think of that in my panic and frustration ( and stupidity ). I don't have a way of hooking up a switch to the power switch pins, is there a way to switch it on ie/ shorting the pins with a screwdriver or something? The mobo is a Jetway V266B if that helps! Thanks for the help so far

 

[Vertigo Acid]

Yep, just short the two pins for the power switch header with a screwdriver, and it'll spring to life

 

[Pedro Lambrini]

That did the trick! Thankyou very much for your help it really is appreciated

 

[Vertigo Acid]

No problem, glad it worked

 

[Ice Czar]

for future reference it quickly determine if the power supply works
a paperclip from any on the black wires on the main power connector to the green wire (there is only one) will do the same thing, but you should attach a resistive load to the PSU as well, a HDD \ Optical Drive would be ideal, if there isnt enough of a load it might not turn on.