Cooling fan for antec power supply pp 303xp does not come on when computer is switched on. Is this a replaceable item or do I have to buy a new power supply?

it is overheating,and that is because it need repear or buy new one.

Power supplies are not meant to be fixed. If you have electronics repair experience, crack it open and replace the fan with a new pc cooling fan of the same size and power.

buy another fun and replace the old one

If the fan that is working is the outside fan on the power supply and if your case is well ventillated there wont be a problem. If not then buy a new power supply.

no you have to order a power supply with the same properites of it or else you will run into trouble

I agree with you about the power supply being faulty. Unfortunately FixYa is not affiliated with Antec nor sells or service any computer components.
You need to contact the supplier who sold you the power supply or contact Antec.

If you "popped" the power supply, I would check to see if the RAM might have taken a hit as well. Ram chips and CPU are sensitive when it comes to power surges. I would troubleshoot the system, unplug everything. you need monitor, power, cpu, and ram (1 at a time). Check to see if the system will POST. if you do get it to POST, start with 1 item at a time and see if the system will POST every time. If nothing happens, there is a chance you may have a damaged motherboard or cpu.

You should ebay or just put the model number in Google. Let me suggest that while the fan may be going out, the heatsink will still be ok. You should open up the fan box and see what size of fan is in there. I believe it looks like a 120mm fan. You can buy a nice one for under $20 and it'll go right in without you even having to remove the unit from the motherboard.

No fuse, but they are relatively inexpensive, about $30.00. You can have yours load tested by a reliable local tech to confirm it has given up the ghost...and they'll probably be happy to supply a new one as well...
Here's a startup troubleshooter that has more info if you're interested in self-testing...

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
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You can't replace the fan, you have to replace the power supply. In order to find out whih one you need the best thing to do is open your PC and find out the Wattage. It will be marked on the outside of your power supply. Just in case you do not know where the power supply is, if yo see where the vents are on your computer the power supply is there. It has a fan to blow the hot air out of it..

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