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Registered Member #3209
Joined: Sat Sept 18 2010, 06:00AM
Location:
Posts: 2
i just purchased a 375w atx power supply from a store down the road. while at the store this little unit was tested, and found to be in perfect order. when i got home i started the usuall business of grouping like wires together, ect. now for some unknown reason 1. my fan hasn't come on at all. temps. are low anyway but..... 2. the 5 volt side is given me issues. when i power on i get a perfect reading of 5.31volts. However when i hook this up to my chlorate cell it seems to shut off. when i use the 3.3v the unit works like a champ. any ideas on this? what am i missing?
Registered Member #3209
Joined: Sat Sept 18 2010, 06:00AM
Location:
Posts: 2
im not sure. unfortunately i dont have an amp meter. i opened the unit back up to see if i over looked anything and found the built in fans leads are going to the single gray wire and what looks like (same color but separate ) 3 v wire.
Registered Member #1208
Joined: Thu Jan 03 2008, 05:30PM
Location: Chesterland, OH
Posts: 154
some things require a dummy load on one of the wires in order to work properly
"Note that some power supplies may have either a gray or brown wire to represent "power good"/"power ok". (Most pSU's have a smaller orange wire that is used for sensing-- 3.3V- and this wire is usually paired at the connector to another orange wire. Make sure this wire is connected to the other orange wires, otherwise your lab power supply won't stay on.) This wire should be connected to either an orange wire (+3.3V) or a red wire (+5V) for the power supply to function. When in doubt, try the lower voltage first (+3.3V). If a power supply is non ATX or AT compliant, it may have its own color scheme. If yours looks different that the pictures shown here, make sure you reference the position of the wires attached to the AT/ATX connector rather than the colors."
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atx psu problems...
