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Swapping X61 motherboards

X60/X61 and X60t/X61t Series
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karotlopj
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Swapping X61 motherboards

#1 Post by karotlopj » Sun May 09, 2021 1:22 pm

I have two X61's one which boots up OK - although sometimes just switches off. The other does not power up, although the fan starts up for a few seconds when powered on, but there is no BIOS screen.

The one which doesn't power up has an antenna and a WWAN card, the other does not. I was thinking about swapping the motherboards to be able to take advantage of the WWAN card.

How interchangeable are they likely to be?
My ThinkPad Graveyard:
600 * 2, X220, X61 * 2, T61

rkawakami
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Re: Swapping X61 motherboards

#2 Post by rkawakami » Sun May 09, 2021 6:32 pm

Looking at the X61 HMM there's several different bases (lower case assembly) called out. The only difference may be in the model type (M/T) label that's provided. If your two X61 systems share the same basic model type, the first four digits, then I'd say you're golden. If they are not the same model type, then you should look at the HMM to see exactly how the builds are different.
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
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axur-delmeria
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Re: Swapping X61 motherboards

#3 Post by axur-delmeria » Sun May 09, 2021 10:18 pm

Have swapped X60 and X61 motherboards across models with and without WWAN antennas. They're compatible.

Alternatively, you can just swap the lids, with the screen, antennas and all.
Daily driver: X220 4291-C91 i7-2620M

Backup: X601 Core 2 Duo T8100
Toy: X60F Core Solo U1300
On loan: X220 4291-P79 i5-2520M
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

karotlopj
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Posts: 237
Joined: Wed May 18, 2016 7:14 am
Location: Yorkshire, England

Re: Swapping X61 motherboards

#4 Post by karotlopj » Mon May 10, 2021 7:51 am

Thanks for the guidance, especially about just swapping the lid - sounds much more straightforward.
My ThinkPad Graveyard:
600 * 2, X220, X61 * 2, T61

karotlopj
Sophomore Member
Posts: 237
Joined: Wed May 18, 2016 7:14 am
Location: Yorkshire, England

Re: Swapping X61 motherboards

#5 Post by karotlopj » Thu May 13, 2021 9:31 am

axur-delmeria wrote:
Sun May 09, 2021 10:18 pm
Have swapped X60 and X61 motherboards across models with and without WWAN antennas. They're compatible.

Alternatively, you can just swap the lids, with the screen, antennas and all.
Just started to getting around to the swap and am left somewhat confused by differences in the motherboards. The one with the antenna (the dead one)
which I'll call TP1, has an additional fan near the front. It looks like I could simply add it in but there is no connector for it.

Noticed that the wires to the screen were different, both had three wires, TP1 had two on the right and one on the left. TP2 had one on the right and two on the left. TP1 originally had two modems, a WWAN card and a WLAN card. The TP2 only has a WLAN card but it has three terminals, the WLAN card in the other system only has two terminals and the WWAN card had only one, so three cables, three terminals, but I wouldn't have been able to do what I wanted to anyway...

Now, can I manage to assemble the one which was nearly working or will both join my ThinkPad graveyard, which is getting expansive.
My ThinkPad Graveyard:
600 * 2, X220, X61 * 2, T61

axur-delmeria
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Re: Swapping X61 motherboards

#6 Post by axur-delmeria » Fri May 14, 2021 1:10 am

Some X61's do have a second fan. In my experience, I've seen them in the highest-end models (with Core 2 Duo T7500 or T9300 processors). The models that don't have the 2nd fan don't have a fan connector, so you won't be able to plug it in anyways.

Regarding the WiFi cards, the one with three antennas is usually the Intel 4965AGN, while the one with two antennas can be an Intel 3945BG or two different Atheros cards. From memory, the WiFi antenna cables are black, white, and gray, while the WWAN antenna cable is red. I've never had a WWAN card to use though, so I cannot be certain if plugging a WLAN antenna into the WWAN card will work without issue.

Also, it's possible to use the 4965AGN with only two antennas-- don't use the middle antenna connector.
Daily driver: X220 4291-C91 i7-2620M

Backup: X601 Core 2 Duo T8100
Toy: X60F Core Solo U1300
On loan: X220 4291-P79 i5-2520M
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

karotlopj
Sophomore Member
Posts: 237
Joined: Wed May 18, 2016 7:14 am
Location: Yorkshire, England

Re: Swapping X61 motherboards

#7 Post by karotlopj » Fri May 14, 2021 1:11 pm

axur-delmeria wrote:
Fri May 14, 2021 1:10 am
Some X61's do have a second fan. In my experience, I've seen them in the highest-end models (with Core 2 Duo T7500 or T9300 processors). The models that don't have the 2nd fan don't have a fan connector, so you won't be able to plug it in anyways.
Do you know how to identify the higher end models visually?
My ThinkPad Graveyard:
600 * 2, X220, X61 * 2, T61

axur-delmeria
Senior ThinkPadder
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Posts: 2936
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: Swapping X61 motherboards

#8 Post by axur-delmeria » Fri May 14, 2021 11:21 pm

karotlopj wrote:
Fri May 14, 2021 1:11 pm
Do you know how to identify the higher end models visually?
Unless the internal components were changed, the best way to identify them is to get the Machine Type Model (MTM) code at the bottom of the chassis, click the MTM link at the top of the forum page, then enter the MTM code on that site.

For example, my old X61 T9300 had the following MTM: 7676-A24.
Daily driver: X220 4291-C91 i7-2620M

Backup: X601 Core 2 Duo T8100
Toy: X60F Core Solo U1300
On loan: X220 4291-P79 i5-2520M
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

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