Antec sl450 issue

[boboboi]

The PSU I use is the Antec SL 450.

my system:

Abit IS7
P4 2.4ghz 800fsb C model
Abit geforce 4 ti 4200 64mb
2 Seagate 120gb ultra ata
sony dvd drive
sony cdrw drive
Crystal sound fusion sound card
Tt extreme Spirit NB HSF
Tt spark 7+ HSF
Tt Thunderblade 120mm LED Fan

CPU Overclocked to 2.7ghz

Now the problem: I have a huge 120mm fan and I tried to plug in an 80mm case fan. When I plugged it in and turned on my computer ... it starts up normal...but nothing comes up on the monitor and within 5-8 seconds my computer just shuts off. I unplug the fan and just use one case fan and it starts up great and windows pops up. I'm guessing I dont have enough power in my PSU to use more stuff on my comp?

I thought a 450 watt psu would have been plenty...I am the sad
+5v: 40a
+12v: 20a
+3.3v: 28a

are my railings good?

railings: +5v = 4.92 v
+3.3v = 3.25-3.26 v
+12v = 11.74 - 11.80 v

 

[imported_Kiwi]

Roughly three years ago, a supplier of capacitors to the PC companies based in Taiwan made a huge batch of bad ones, and before the deficiencies were caught, tens of thousands of those bad ones were built into products. Antec may have been among the companies caught by that situation, because some of their psu's from that period are starting to fail. That might be your problem.

I am not personally familiar with the current draw from any particular Tt fans; if your psu was operating correctly, it should've been more than sufficient for the system you described in the query. Have you tried the fan situation in the reverse order, just in case it is the new 80 mm fan that is the one actually sucking a lot more current than it is supposed to? (Disconnect the 120 for the test, and have only the 80 powering up.) I have a PC that I assembled for a grandchild that is roughly equivalent to your Abit, but with a newer (slightly less speedy) video adapter and an AMD processor. It has a Vantec 120 mm exhaust fan, and two generic 80 mm intake fans, and I have it running on an Antec 350 Watt psu with no problems.


:beer: