Bios chip location

Message

tnynyn · #1 Post by **tnynyn** » Thu Jul 06, 2006 5:36 pm

Well I was lookin at the board and seems that there was a chip that has been crappily soldered onto. Its right under the Mini PCI (red circle). I desoldered the chip and will resolder it back on. I Can make out the top words "atmel" which im thinking is the bios chip. Am i right? also, if anyone knows about these boards, is there another chip that goes next to the bios chip (blue circle)

http://img151.imageshack.us/img151/9794 ... 0158fc.jpg

Moderator Edit: Please read the posting rules relating to embedded images!

christopher_wolf · #2 Post by **christopher_wolf** » Thu Jul 06, 2006 6:20 pm

That link isn't showing the image, by the way.

Atmel makes a bunch of ASICs and Microcontrollers and many Thinkpads have those chips in them. Most likely, though, you are probably dealing with the EEPROM. The BIOS is from Phoenix and the EC is a Hitachi/Renesas H8S.

What Thinkpad model is this by the way?

tnynyn · #3 Post by **tnynyn** » Thu Jul 06, 2006 6:28 pm

sorry didnt know about the image thing. heres another link

http://img151.imageshack.us/img151/9794 ... 0158fc.jpg

its a t41 model. and oops i meant the security chip, not bios. could it be the same as the ones they sell on ebay? seems like a few of the legs on the chip broke off and its gona be harder to solder it back on so i wanna get a new one.

christopher_wolf · #4 Post by **christopher_wolf** » Thu Jul 06, 2006 6:36 pm

tnynyn wrote:sorry didnt know about the image thing. heres another link

http://img151.imageshack.us/img151/9794 ... 0158fc.jpg

its a t41 model. and oops i meant the security chip, not bios. could it be the same as the ones they sell on ebay? seems like a few of the legs on the chip broke off and its gona be harder to solder it back on so i wanna get a new one.

If I recall correctly, that isn't the security-subsystem chip and the chips that are missing from there are fairly small. If you have the ability, you *might* be able to solder it back on, but I wouldn't count on that. If it *was* the ESS chip, you would be SOL as, once the ESS chip is removed from the system board, that is essentially it and it will not function in another board and that board won't function without it.

rssb · #5 Post by **rssb** » Thu Jul 06, 2006 7:50 pm

what you are seeing is the eeprom, which holds the serial numbers etc...

#6 Post by **draco2527** » Thu Jul 06, 2006 9:54 pm

rssb wrote:what you are seeing is the eeprom, which holds the serial numbers etc...

Yep, and the one on the right (blue circle) should be unpopulated....

tnynyn · #7 Post by **tnynyn** » Thu Jul 06, 2006 10:15 pm

hmm, if the eeprom is missing, would it cause any problems? i dont wanna turn on the lappy w/o the eeprom if its going to mess up the laptop. ill resolder it back on this weekend and see wat happens.... thanks for all answers guys. hope it works since ive been wanting to own an ibm for along time now and this would be my first...

Bios chip location

Bios chip location

Who is online