will T-T41 MB (with gigabit) work in T-40 (with 10/100)

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kenhargreaves@mts.net · #1 Post by **kenhargreaves@mts.net** » Mon Aug 13, 2007 7:48 pm

Is a T41 MB with Gigabit compatible with T40 MB with just 10/100? When I do switch (t41 for t40) I get garbled video.
Help me

ken

#2 Post by **bill bolton** » Mon Aug 13, 2007 8:08 pm

It depends on whether the display type for both T4x models is the same.

What are the 7 digit model numbers for both T4x ThinkPads?

Cheers,

Bill B.

#3 Post by **underclocker** » Mon Aug 13, 2007 8:26 pm

This seems strange to me. Any display (along with it's cable and inverter) should work with any T4x motherboard.

I'd say the new T41 motherboard is defective. Does it work properly with an external monitor?

P.S. Welcome to the forum!

kenhargreaves@mts.net · #4 Post by **kenhargreaves@mts.net** » Mon Aug 13, 2007 9:41 pm

T40 is a 2373-7CU. T41 MB is FRU 93P3307. I have since gotten MB to work sporaticly but with signifcantly distored/garbled video. I think MB is a bust. The MB is used off-bay (guy said MB good just USB ports a little flacky) and I guess not worth anything.

It appears that the Gigabit and 10/100 ethernets are not issue, so I will get new gigabit ethenet MB and try it out (FRU 91P7186 for T40)

Ken

SHoTTa35 · #5 Post by **SHoTTa35** » Mon Aug 13, 2007 10:03 pm

i thought even the T40 came with Gigbabit ethernet? i thought that was a standard feature of the T4x series. Eitherway, maybe the motherboard he sold you was bad. The garbled video might be a symptop of flexing of the motherboard:

t42 shuts down when i move it:

sktn77a · #6 Post by **sktn77a** » Mon Aug 13, 2007 10:59 pm

The T40 came with either 10/100 or 10/100/1000 ethernet. But this doesn't sound like it's anything to do with the network setup - sounds like a dud MB, as evidenced by the inop USB - this is usually a prelude to failure of other components, based on the postings on this forum.

kenhargreaves@mts.net · #7 Post by **kenhargreaves@mts.net** » Sat Sep 08, 2007 11:14 am

OK - got new T40 Motherboard now in place and I get the following: Four cycles of four short beeps and a blank screen - IBM site says System board (Security chip). What does this mean?

Ken

#8 Post by **Harryc** » Sat Sep 08, 2007 11:53 am

Wow, you are having a string of bad luck with system boards, where are you getting them from? That code means that the security chip on the system board (it is soldered on) is malfunctioning or not present when expected by BIOS. The security chip can be replaced if you have a decent hot air soldering station, or there are companies that will perform that service. I'd send the board back to the seller and find a better supplier.

kenhargreaves@mts.net · #9 Post by **kenhargreaves@mts.net** » Sat Sep 08, 2007 12:24 pm

OK - where is security chip located? I will check to see if it is missing. Also I will try other MB I received to see if issue there as well.

Ken

#10 Post by **Harryc** » Sat Sep 08, 2007 1:24 pm

Small square chip w/ 8 legs. I believe it's labeled ATMEL 24RF08.

rssb · #11 Post by **rssb** » Sat Sep 08, 2007 2:23 pm

The chip shown in the picture is "NOT" the security chip ( TCPA chip). The TCPA chip is on the back of the motherboard close to the printer port ( covered up under a black tape).

The chip shown is a serial number and bios setup password holder only.

#12 Post by **Harryc** » Sat Sep 08, 2007 2:53 pm

I stand corrected. See the following link for a picture and models with TCPA.

http://www.thinkwiki.org/wiki/Embedded_ ... _Subsystem

kenhargreaves@mts.net · #13 Post by **kenhargreaves@mts.net** » Sun Sep 09, 2007 12:17 pm

OK - got MB to work. It appears that the Imbedded_Security_Subsystem
got knocked off bottom.Picture was helpful thanks.

I will check outher MB now

Ken

will T-T41 MB (with gigabit) work in T-40 (with 10/100)

will T-T41 MB (with gigabit) work in T-40 (with 10/100)

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