New power supply will not turn on

[Cyberg51]

I purchased a new raidmax 450 power supply for my computer and it will not start up. No fan or lights-nothing. I can jump the 2 pins for the off/on and fans turn and it seems fine but when installed I get no response at all. The old 300 watt when put back in runs fine but cannot power all the devices. I have checked all connections and output with vom and the supply is good.
The mobo is a PM800 M2 with 2.4gig hrz pentium 4. Running cd/rw dvd/rw 2 hard drives 4 fans and the ATI 2400hd video card. Any suggestions? I cannot locate any issues with the new supply and all conections triple checked. This is a warranty replacement for the first raidmax I received and at this point I believe the first one was fine also.

 

[rolli59]

Return the Raidmax and get a quality unit instead. They are at the bottom of the barrel quality wise as you just found out!

 

[hunter315]

So the paper clip test works but it cannot power up the system?

Sounds like a good old POS raidmax. Return it for a refund if you can and move up to a good power supply. There is only 1 450 W raidmax, its old and crappy, and was crappy when it was new.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817152032


I would really suggest moving up to a decent modern unit, something like the Corsair 430 CX V2 can actually deliver more useful power than that "450 W" raidmax.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=430%20cx

 

[delluser1]

The old 300 watt when put back in runs fine but cannot power all the devices.
The mobo is a PM800 M2 with 2.4gig hrz pentium 4. Running cd/rw dvd/rw 2 hard drives 4 fans and the ATI 2400hd video card.

The "old 300 watt" isn't running fine if it can't power those specs.

 

[Cyberg51]

The issue is the connectors available on the new power supplies also. This is an older computer and to be quite honest I don't have the scratch to get something new. Finding sometyhing with at least 5 molex connectors as well sata and the correct P4 connectors has been an issue. This computer is not pci-e and other than "junkin" old machines at the salvation army, I cannot locate anything with the correct connections (or enough connections) The 300 watt is limited for connectors and did not respond well to multiple jumpers.