T30 memory slot research

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petteram · #1 Post by **petteram** » Mon Oct 22, 2007 1:54 am

I would like to do some research on which models who has this problem.
But then I need help from all of you in the community.
I need the modelnumber of the models with the 1 slot that isnt working. And I will start with the 2366 series.
Of course I need as many as possible to make this correct.
Please provide me with the 3 digits after the 2366 modelnumber.

truk · #2 Post by **truk** » Mon Oct 22, 2007 4:20 am

I think any motherboard the is from a t30 has the issue. If there is a correct motherboard you would be better off having people post the boards that have NOT had the problem, and take them off the list as people have issues with them.

#3 Post by **RealBlackStuff** » Mon Oct 22, 2007 5:35 am

If you open the lid at the bottom (nearest the back of the TP), you should find the motherboard's ASM P/N: and FRU PN: on the white plastic that 'folds' around the modem/wifi card.

See also my post with T30 mobo-numbers here: http://forum.thinkpads.com/viewtopic.php?t=51143

Replacement mobo numbers have also been introduced:
old assy : 26P8205, newer: 91P7689
old assy : 26P8328, newer: 91P7692
old assy2: 91P7211, newer: 91P7695 (also found as 26P8422)
old assy2: 91P7212, newer: 91P7698 (also found as 26P8423)

My T30 2366-87G originally came with a 26P8423 mobo.
It was faulty (but not because of the memory slots!) so I replaced it with a used 26P8422. I forgot out of which model this came.
No problems with the memory slots on this 26P8422, I run it with 2x 1GB Samsung RAM sticks.

petteram · #4 Post by **petteram** » Mon Oct 22, 2007 12:05 pm

This is just to see IF there is a pattern between the fault and the different models.
I have a 2366-N6G and have no problems with my 1Gb installed memory. (2x512)

uberT · #5 Post by **uberT** » Mon Oct 22, 2007 3:04 pm

I've got a 2366-85U. Running 1.5GB of RAM. One slot (towards the front edge of the machine) is problematic. Some days I've got 1GB RAM functional, on good days I've got 1.5GB.

robert213 · #6 Post by **robert213** » Wed Oct 31, 2007 11:48 pm

I have T30-2366-81U

Before I opened up the cover to my memory slots...

I had 1.8GHz P4 with 512MB RAM

I opened up the cover to memory slots to verify that I was using both slots.

I opened up the cover to mother board to view 26P8205

I closed both covers.

Afterwards, my T30 refused to boot.

I opened up the cover to memory slots
and removed IBM FRU 10K0031
Mitsubishi PC2100S 2533-0-A1
MH32D64AKQJ-75
2451L21
from slot closest to front.

Now I have 1.8GHz P4 with 256K RAM

Moral of the story...

If both of your memory slots are working,

Do NOT open up cover to memory slots!!!!

Edit-01: Would someone kindly tell me where I can purchase one 1GB of memory?

Edit-02: After opening the cover to memory slots, I didn't know whether I had two working 256K DIMM(s) or one working 512K DIMM. So, I removed the DIMM in the front slot, in order to see the part number. I planned to "google" part number to determine size. I promptly placed the DIMM back in its original slot.

Edit-03: I unplugged the AC adapter and powered-off my machine, but I neglected to remove the battery. Instructions for removing DIMM(s) here...
http://www-307.ibm.com/pc/support/site. ... MIGR-42404

Edit-04: The most discouraging part is that I thought that the worse that could happen -- would be that I would lose use of one of my memory slots. However, after trying several times to re-seat the DIMM, my machine refuses to reboot (with original DIMM in original front slot).

Edit-05: IBM List of PC2100 & PC2700 Part Numbers...
http://www-307.ibm.com/pc/support/site. ... MIGR-41751

Six_Shooter · #7 Post by **Six_Shooter** » Thu Nov 01, 2007 12:14 am

So does anyone know what the actual problem is?

I'd like to fix mine properly, the paper trick is only a band-aid and I hate to "fix" things that way.

uberT · #8 Post by **uberT** » Thu Nov 01, 2007 5:53 am

robert213 wrote:I
Edit: Would someone kindly tell me where I can purchase one 1GB of memory?

Rob, Kingston and others have the correct 1GB strip. I got one on eBay for around $40. (Take a look at the first page of this thread and you'll see a picture of the Kingston strip: http://forum.thinkpads.com/viewtopic.ph ... sc&start=0 )

I am not clear on the exact problem. There has been quite a bit written about it.

Try re-seating your existing memory strips a few times. It takes me a couple of tries to get both slots working again.

T30 memory slot research

T30 memory slot research

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