I switched my pcb on my harddrive with a new pcb and i need to swap my nv-ram for my HD to run properly. But im a little puzzled on which one is it, or do i need to switch both of the chips?

NVRAM=S93C86

plz swap this u drive is work now perfectly

so im confused should i switch the two 8 pronged chips or just one of them? Hardrecover circled the opposite one of what moltke said was the nv-ram? thank you for your posts.

Moltke is correct. That said, "NVRAM" is an unfortunate misnomer that could easily be applied to either chip as both are "non-volatile". It can't hurt to do what Spildit suggests, although I'd transfer the S93C86 first.

BTW, what is the problem with the patient PCB?

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A backup a day keeps DR away.

Based on the questions in the OP's previous thread on this topic here:

viewtopic.php?f=1&t=26497

... I personally have doubts that it's realistic for the OP to attempt this themselves.

That's why I make people aware of PCB vendors who will do such jobs for free. TV repair shops should be able to do it, too.

Perhaps we should be making people aware of in-circuit programming using SOIC/SOP chip clips and a cheap SPI/microwire programmer. It's an additional cost (~US$20 - $30), but it's probably worth it.

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A backup a day keeps DR away.

Swap both of them, but make sure you are not rotating the chips.

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Think before you act => Most of the time there is only one chance for recovering lost data !