testing a psu

  dasman 19:35 29 Oct 2005
Locked

TO TEST A POWER SUPPLY UNIT CAN I USE A MULTIMETER ACROSS A VOLTAGE AND GROUND, OR DO I NEED TO PUT A LOAD (RESISTOR) ACROSS THE CONNECTIONS BEING TESTED

  Fruit Bat /\0/\ 19:37 29 Oct 2005

PSU TEST
click here

  woodchip 19:44 29 Oct 2005

To Test a PSU, It needs To be Connected to Mobo Swithed on, there is no 230AC to worry about. black prob to case red probe to red Wire on Set to about 20v DC red wire should be As near as pos to 5Volts

Check Pin out volts click here

  woodchip 19:46 29 Oct 2005

Do not try with it disconnected or it will blow PSU

  woodchip 19:47 29 Oct 2005

Shove the red prob in back of ATX plug on the wire you want to test

  Eric10 20:39 29 Oct 2005

Maybe not for a one off test but useful for someone involved in repair work click here

  Chegs ® 20:51 29 Oct 2005

Just recently had a device brought here specifically to test a PSU.It was nowt but a 25W resistor and a switch connected to a motherboard plug.It weren't much of a test,as 25W load on a 400W supply isn't a lot.

  octal 21:01 29 Oct 2005

A 25W resistor is absolutely fine, as long as its a load that's OK, it would be a mighty big resistor if it was 400W :-)

It would warm the room up nicely.

Switch mode PSU's don't like being run off load because the back EMF (Electro-Motive Force) across the switching transistors will pop them.

  Dae 23:50 29 Oct 2005

Anyone know where in England you can buy an EZ Power Supply Tester version 2? Version 2 tests SATA supplies.

Otherwise, any details of where one can buy any other Power Supply Tester that includes a SATA test connector.

  Chegs ® 00:10 30 Oct 2005

I used to have a kilowatt dummy load,it was for amplifyer testing.It used to get rather hot when I was into CB and firing my BV1000 into it. :-)

  DieSse 00:20 30 Oct 2005

click here you can ask them gor a UK seller here.

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