[RESOLVED] No power

Hi guys

I recently bought a new multipoint for all of my plugs. after changing my equipmet to the new multipoint my pc no longer powers on. I have changed back to the old multipoint and have tried plugging the pc straight into the wall but to no avail.

I've changed the fuse and nothing so i'm guessing thta the PSU is dead? I have a plugin electricity monitor and my pc always consumes electricity even when off and it is still consuming that electricity after this problem started. Where this is going now that the PSU is possibly dead i don't know, but it seems that power is being drawn by the pc. The power button itself just does nothing.

What should i be looking at here? a new PSU? whould i try and get the same PSU? what about a slightly higher voltage/amperage/whatever? bad for the pc?

I have never bought or installed a PSU before so am totally clueless here so please be gntle with me :D

Thank you

I am assuming that you have plugged something like a lamp directly into the outlet to verify that there is actually power there. Have you tried the computer on a different outlet on a different circuit? If yes, and it still won't power up, then it is likely new power supply time. Some system specs would be helpful in recommending a suitable replacement.

There are effectively two power supplies in each unit - there is the small Standby transformer, which is the bit that draws power even when the PC is off. Then there is the main switch-mode supply that actually powers everything. The Standby supply needs to be present to actually start the switch-mode supply, and also to supply the RAM modules, etc., when the computer is sleeping.

If you have, or can borrow, a multimeter, here's how to test the power supply:

Testing PSU Voltages

ATX Power Supplies

Trigger Power Supply for testing

In depth look at the power supply

Or alternatively you can buy a proper PSU tester, they don't cost much:

PSU Tester

ATX12V PSU Tester

An update

I tried testing the PSU which failed miserably. I removed the PSU from a different pc (first time, difficult) and tried it in the first which worked no problem. I now have a new PSU which seems to work ok.

Thanks for help

You're very welcome :)