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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Which chip holds the firmware? Calipso III

May 21st, 2007, 13:39

This hard drive has a burnt smooth chip. I found an almost identical PCB but it didn't work. My question is is it better to pay someone $100 to swap out the smooth chip or can I swap out the Firmware chip myself. I believe its one of the 3 8 pin ic's but i don't know which one it is. Thanks, Ben

Image
Image

May 21st, 2007, 14:44

Rom IC is 25P10V on top right (U401)

May 22nd, 2007, 6:24

darkforce1 wrote:Rom IC is 25P10V on top right (U401)


Change only that IC
and must work!!!

May 22nd, 2007, 7:31

It should work without resoldering
Something else has been broken

May 22nd, 2007, 11:44

What happens after swapping the PCB?
Does it ID? If yes, how? Do you get any clicking?

when powered on

May 22nd, 2007, 14:35

When I power it on it does not register in the BIOS and it clicks once.

It worked

May 22nd, 2007, 19:38

I swapped the chip and it worked. If any one els tries this a tip is to cut the chips off with a razor blade instead of trying to desolder them.
thanks for your help, Ben.

May 23rd, 2007, 2:51

Hi,

there is no problem with desoldering the ICs, cutting sucks :)
though I'm glad U succeeded.

pepe

May 25th, 2007, 3:27

Even if u tried resoldering the SMOOTH chip u wouldnt have suceeded because the prints are burned .
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