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t61p mobo replacement

2016-03-21, 23:22 PM

Does anyone know if a 14" t61 mobo can replace a broken 15.6 t61p mobo?

 

thx!

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Re: t61p mobo replacement

2016-03-22, 0:18 AM

It does not fit at all.  There are 3 entirely different shapes of MBs for T61 series machines:  14.1" (tall screen), 14.1" wide screen and 15.6" wide screen. 


Rich


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Re: t61p mobo replacement

2016-03-22, 0:28 AM

 

While the the System Boards look somewhat similar, they are not exact, and the part numbers/FRU's are different for them.   Many of the other parts that attach to the system board have different part numbrs/FRU's too, so I would say no.

 

If you need a mainboard for a 15.4 inch T61, search for the correct FRU on your existing board online, and you should find one under 50 bucks.

 

Good Luck

 

 

 

Below are the Hardware maintenance manauals for both 

 

ThinkPad® T61 and T61p (15.4-inch widescreen) Hardware Maintenance Manual

https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/42x3546_04.pdf     

  • See page 106 for System Board image
  • See page 124 for explooded view
  • See page 139 for list of System Board FRU's:  (42W7651, 42W7875, 42W7652, 42W7876, 42W7653 42W7877)

 

ThinkPad® T61 and T61p (14.1-inch) Hardware Maintenance Manual

https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/42x3545_04.pdf

  • See page 105 for Image of System Board
  • See page 122 for exploded view
  • See page 137 for list of System Board FRU's  (42W7648, 42W7872, 42W7649, 42W7873, 42W7650, 42W7874)

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Re: t61p mobo replacement

2016-03-22, 16:26 PM
Thx for the reply!
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Re: t61p mobo replacement

2016-03-22, 16:28 PM
Thx for the detailed reply. Can I ask, do you know where I would find the information for my existing system board FRU? I cannot boot the laptop now even to BIOS, it just does it's beep thing.
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Re: t61p mobo replacement

2016-03-22, 22:08 PM

You would have to remove the existing MB to really know for sure if you want he exact one installed currently, but it should be either a 42W7650 or 42W7874 since your system is a T61p, which had the higher end Quadro FX 570M  nVidia onboard graphics.    

 

All should fit your system, but note note that the boards showing the nVIDIA NB8M-GS (nVidia Quadro NVS 140M) were used in the T61, while board with the nVIDIA NB8P-GL (nVidia Quadro FX 570M) were used in the T61p.    The Intel Crestline GM is the lowest performing graphics model. 

 

If you are getting beeps but no error codes, you might check out the beep codes on pg. 44 of the Hardware Maintenance Manual.    Loose DIMM memory could cause beeps, so be sure to check that out by removing one at a time (if you have two) and making sure that they are in the correct slot 0 position (see page 70).   One bad DIMM could cause it to beep.

 

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Re: t61p mobo replacement

2016-03-23, 19:03 PM

Thanks for the reply. I'm going to be looking for the intel integrated gpu as it looks like my t61 went b/c of the faulty nvidia gpu problem. I do plan on confirming it's the mobo by troubleshooting as you've suggest, ram DIMMs and I also read somewhere it could be the lcd panel connect or something so to try reseating that as well. I just have a feeling it's the graphics card for some reason but it'd be great if all is fixed from reseating the RAM. Thanks again!

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