Finding An IC

[kazem2114]

Hi every one
my metal detector doesn't work . It's Laminous 15000
I found that this " Metal can package IC " doesn't have any voltage
I'm sure it burns...
But I have no clue what it is.
Manufacturers clear the part number of this IC
this is the image of it :
http://aer.net78.net/photos/5b15a3bd8596.jpg
It has 8 bases and "ST" made that
and this is the circuit around it :
http://aui.netau.net/photos/e53d253d6bc3.jpg
Please help

Thanks