I left my power cable at the house when I went on
Harddrives are built in a 'Clean Room'.
99.9% dust, and foreign object free.
Inside the harddrive are Platters. They resemble a CD disk, and are made of glass, or metal. Their surface is very finely polished.
On the upper, and lower surfaces of these platters, are applied a magnetic media. (Usually Iron Ferrite)
This magnetic media is arranged in a pattern of 0's, and 1's, for the data put on it. The 0's and 1's are then changed into machine language, for the computer to read.
There may be 3 to 6 platters, inside an average harddrive. EACH platter has a Read/Write Head above it, and below it. (Read option of Read/Write head -> 'Reads' data. Write option 'Writes' data. Arranges that magnetic media for the data being applied to it, or taken away. {Address locater removed)
The Read/Write Heads are attached to an 'Arm'. The Arm moves back, and forth across the platter. The arm is actuated by an 'Actuator Motor'. The Actuator Motor is controlled by a circuit board on the bottom of the harddrive.
[More information: http://computer.howstuffworks.com/hard-disk.htm ]
The reasoning of my long 'dissertation', is to help understand my solution/s.
1.It may just be that the circuit board for your harddrive, has burned out components on it. Replacing the circuit board may get your harddrive going again.
How? This may not be a simple task, understandably so. However, when faced with the cost of retrieving data from your harddrive, or finding a compatible circuit board, it may become more relative.
2.Since, removing the platters from the harddrive may be one of the ways the Pro's will use, remember that they have to open the harddrive in a clean room, and use special techniques, as well as special suits that they have to wear. (Lab controlled environment)
Part of the reasoning of the high cost.
3.The motor that drives the platters uses 12 volts. The actuator motor uses a LOT less. If either motor is fried, the platters will have to come out, to read, and copy data off of them, or the motor/s replaced. (Not likely)
Number 1 above, will cost you time to see if a computer shop, has the same type of circuit board you require, and probably around $10 to $20.
Number 2 and 3 above, (Last time I checked), will cost $75 an hour, and on up.
8/23/2009 5:59:54 AM •
Mad Dog...
•
Answered
on Aug 23, 2009