Computer died

[Bill Horne]

On 04/03/2011 09:26 AM, Jerry Feldman wrote:
> Additioal question how canyou test if power supply is dead with a
> multimeter? I'm not a hardware guy

Whoa!

Switching power supplies have to be tested with a load on them: they 
need the load to deliver proper voltages, and can be damaged if started 
without one.

The problem is that you can't be sure if the motherboard is in trouble, 
the power supply, etc., without sectionalizing the components, and 
you'll need a test jig to do that. Something as simple as a three 
automobile brake lights will usually do, but you'll need a 6-volt lamp 
(good luck finding one!) for the +5 lead. You can build a test jig with 
lamps or resistors, and I always intended to but never did: it's easier 
to swap in a new supply.

I recommend you check the existing supply for blown fuses (if there are 
any: some supply manufacturers don't bother) and then try a new supply.

HTH.

Bill

-- 


"This line of life is quick and keen
  The time arrives - the knife is clean
  I am older now and I have seen
  Great flames of life expire"
                       - Dave Mallett