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Dead T420 needs system board

T400/410/420 and T500/510/520 series specific matters only
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rockstar
Posts: 38
Joined: Wed Dec 10, 2008 6:18 am
Location: Gainesville, Fl

Dead T420 needs system board

#1 Post by rockstar » Sat Mar 19, 2016 5:06 pm

Greetings all,

I have a T420 Type 4180-A34 that is as dead as a door nail. Was working fine, then shut down and never powered up again. Nothing lights up when a charger is plugged in. The connector to the system board is carrying voltage from the charger. Removed all accessories like wifi, speakers, etc. and still no power. At this point I am thinking the system board is toast.

So the quandary, replace the system board and see if that fixes it, or toss and buy something from the marketplace. This was an i5 cpu and a low resolution screen.

The current system board is FRU 04w2045. Is there a better system board that I should consider ? I am interested in faster cpu and 16GB ram. I'm not sure of the max ram for 04w2045.

I open to suggestions from the wealth of expertise available on this forum. Thanks in advance.

theterminator93
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Location: North Ridgeville, Ohio, United States

Re: Dead T420 needs system board

#2 Post by theterminator93 » Sat Mar 19, 2016 8:10 pm

That's a standard Intel graphics motherboard; the only upgrade would be one with the NVS 4200m GPU. Otherwise they both share the same specs as far as RAM, CPU etc. They both can go up to 16GB 1333 MHz DDR3 and the 2.8 GHz i7 dual core - quad cores do work but heat output is a concern and you'll be throttled back due to the smaller heatsink.
T480 | T25 | W520 i7-2860QM·Quadro 2000m·IPS FHD | T601F T9900·NVS 140m·LED AFFS UXGA
T420 IPS FHD | X220 IPS FHD | T61p·T61·43·42p|X220T·301·61T·41T·24·23·22|G41|A31p·22m|i1200|TransNote
600|770Z|770E|760XD|760EL|365XD|701C|755C

rockstar
Posts: 38
Joined: Wed Dec 10, 2008 6:18 am
Location: Gainesville, Fl

Re: Dead T420 needs system board

#3 Post by rockstar » Sun Mar 20, 2016 9:36 am

Thanks theterminator93, that sounds like a worthwhile upgrade depending on price. I found my original mother board on the bay for $40 or less. Of course I will still have the low res screen either way.

Does anyone know the right fru number for the board with the NVS 4200m GPU ? The HMM just lists integrated graphic as AMT or non-AMT. I am not sure what AMT stands for.

theterminator93
ThinkPadder
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Posts: 1083
Joined: Fri Oct 11, 2013 7:45 pm
Location: North Ridgeville, Ohio, United States

Re: Dead T420 needs system board

#4 Post by theterminator93 » Sun Mar 20, 2016 11:59 am

Looks like 63Y1812 is the discrete motherboard FRU. You'll also need the discrete heatsink, FRU 04W0408.
T480 | T25 | W520 i7-2860QM·Quadro 2000m·IPS FHD | T601F T9900·NVS 140m·LED AFFS UXGA
T420 IPS FHD | X220 IPS FHD | T61p·T61·43·42p|X220T·301·61T·41T·24·23·22|G41|A31p·22m|i1200|TransNote
600|770Z|770E|760XD|760EL|365XD|701C|755C

jaspen-meyer
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Location: Pardubice, Czech Republic
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Re: Dead T420 needs system board

#5 Post by jaspen-meyer » Mon Mar 21, 2016 3:15 pm

T420 i7 3612QM seabios; T420 i7 3630QM; T400 Q9100 seabios; T61 P9600; T60 libreboot; x62; x60s libreboot, led; x24 xiphmont led

yankeesamurai
Posts: 23
Joined: Sun Mar 27, 2016 12:38 pm
Location: Woodland Park, CO, on planet Earth

Re: Dead T420 needs system board

#6 Post by yankeesamurai » Wed Mar 30, 2016 6:10 pm

rockstar wrote:Greetings all,


DID U TRY THE SECRET THINKPAD RESERECTION SPELL ?
NO..
HONEST, THIS IS REAL.. IT INVOLVES TAKING OUT BATTERYS AND DOING BUTTON PUSHINGS IN A SPECIFIC ORDER AND COUNT..

ITS ACTUALLY LISTED ON THIS FORUM SOMEWHERE...IVE READ IT.. ITS A REAL KNOWN T/S METHOD FOR SUDDENTLY DEAD
THINKPADS... IF YOU CALL LENOVO TECH SUPPORT AND ASK THEM TO WALK U THRU IT.. THEY KNOW HOW...

GOOD LUCK.






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