pc does nothing when i switch on?

[ih]

hi This morning when i switched the pc on it started to open and then just as it reached the stage of loading you settings it froze and i had to switch off and when i restart nothing happens i have tried this a few times. This happened in may and i changed the power supply and it has been working ok.Is this power supply problem again? Last one was a new one. Is there any way to check power supply? and help advise will be appreciated. Thanking in advance

 

[kevplumb]

disconnect it from the mains wait a few mins then try

 

[ih]

thanks for your reply kevplum. Yes i tried what you suggested but no luck.Will appreciate if any body can advise how to check power supply.
what connecters to check and what output voltage is required.
thanks

 

[dave.m]

What is the computer make and model and also what make and model of power supply did you fit?

 

[ih]

computer make is "spire" which had hec atx power supply which got faulty last may and i replaced this with IDENTICAL atx power supply hec-300AR-PTF. Since may the pc has been working ok. Until this morning.

 

[wanleg]

Wiring info for an atx psu here

check fuse in kettle lead also.

 

[ih]

thank you Wanlag for very useful information. For the benefit of somebody else having similar problem. On my PSU i had to check with multimeter pin 9 which was purple colour and this should have 5 vdc out. (You need to check with ac power on to psu on)
thanks all for help

 

[wanleg]

Probably get replacement psu on warranty.....a little worrying if this one has gone this quickly. Is it a sealed unit ? if not does it have an internal fuse ?

 

[ih]

No this is not a sealed unit! yes there is a fuse inside. have sent it back under warranty. Thanks for ur help.
ih

 

[tim west]

No this is not a sealed unit! yes there is a fuse inside. have sent it back under warranty. Thanks for ur help.
ih

Presuming you checked the fuse first as that wont be covered under the warranty

 

[ih]

yes i did check the fuse. Thanks for the thought.