"Connected a drve with the power supply on."

With the supply connected to the motherboiard as well? If so, the
odds of having damaged other components connected to the power supply
are so high that the power supply is the least of your worries.

Spend a few dollars on a new power supply - DIY repairs are not
something a novice is likely to be successful with.

John

On Wed, 18 May 2011 13:27:54 -0700 (PDT), KenO
wrote:

I tried to connect a hard drive while the Computer Power Supply(CPS)
was turned on and the CPS blew.

The CPS is a ilssan model ISP 120SI from a eTower PC.

When I inspected the CPS components and PC board, found the fuse did
Not blow and only visible damage was a short section of burned wire of
one inductor coil. If you tell me how will post photos of the CPS for
your examination.

Searched the forum and found something similar. "computer power supply
shorted - no apparent cause of death"
http://groups.google.com/group/sci.e...6a0fb184aa060d

What was recommended was
1. "Check for fusible resistors (usually only a couple of ohms,
designed to go open rapidly and with no visible effect)"

Question: If the damage is not visible is there any method of choosing
what resistors to check?
Also Is there any way to differentiate fusible resistors from standard
ones?

Searched for a schematic but so far have not found one.

Thanks

Ken