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 Post subject: IBM/Lenovo flaw?
 Post Posted: Sun Feb 22, 2009 7:03 pm 
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Joined: Thu Jan 15, 2009 1:27 pm
Posts: 1105
Location: Stowmarket, Suffolk England
Hi Scott you might have seen my post below about an unfortunate P-Bell machine!

Well I just randomly found this E-Bay item mentioning a possible flaw with IBM/Lenovo machines

the crux is is (quote)

"Note: - Laptop was suffering from the poor quality solder on the GPU (known issue due to Lenovo switching to lead-free solder for the first time complying with the European laws when this was manufactured). This meant it would freeze the OS which could be temporarily fixed by applying pressure to the track pointer area of the keyboard which engaged the poor solder on the GPU again and unfroze the OS to continue. Now this fix won’t work either."

from this E-Bay link
http://cgi.ebay.co.uk/IBM-Thinkpad-T43-A21M-Dell-Inspiron-8100-no-reserve_W0QQitemZ250377526851QQihZ015QQcategoryZ177QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Of course I will recommend a Thinkpad to my customer based on your recomendation but wondered if this model (or soldering era is to be avoided?


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Sun Feb 22, 2009 10:10 pm 
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Joined: Sun Feb 04, 2007 11:44 am
Posts: 6070
The change to lead-free solder has affected *all* manufacturers. However from my experience, those manufacturers with higher levels of quality control (such as Lenovo) generally have seen much less of a problem overall with the changeover to lead free soldering than have others. Scott.


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 8:21 am 
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Joined: Thu Jan 15, 2009 1:27 pm
Posts: 1105
Location: Stowmarket, Suffolk England
Hello

Scott Found this Thinkpad, but looks like it might need a new system board(not seen it in person)

http://cgi.ebay.co.uk/Thinkpad-T42-2373-2VG-for-parts_W0QQitemZ150327905764QQihZ005QQcategoryZ177QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

I can't find the correct system board Part number for 2373-2VG and what looks like the correct one direct from IBM/Lenovo cost £837!!!

I goggled some UK Laptop parts suppliers and they don't have part prices on the website (I never deal with companies like that)

So assuming it just needs a "simple" system board swap is it practical?

http://www-307.ibm.com/pc/support/site.wss/quickPath.do?quickPathEntry=23732VG

http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-46474

I think these boards are suitable (do they have to be exact, for example can I use this as an opputunity to get bigger VGA RAM?)

93P4156
93P4157
93P4158
93P4159
27K9907
27K9908
27K9909

the boards further down the list have fingerprint sensors, from the EBay pic it seems new palm rest assembly would be needed to fit the following boards

27K9910
27K9911
27K9912


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 9:46 am 
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Unless you can get a suitable board for $100 or less I don't think it is practical to replace. It is possible to upgrade motherboards in ThinkPads, but without studying that specific model as well as the various boards that were available I can't tell you what would or would not work. It often takes experimentation to learn those details. If you decide to try it, let me know what you try and how well it works out, Scott.


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 2:57 pm 
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Location: Stowmarket, Suffolk England
Turns out that the Thinkpad service manual might be wrong on this occasion!!!

http://forum.thinkpads.com/viewtopic.php?f=2&t=25026

http://forum.thinkpads.com/viewtopic.php?t=25073


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 3:10 pm 
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Which is exactly why I said that it often takes direct experimentation to learn what is possible, and what isn't. <g> Scott.


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 3:23 pm 
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Location: Stowmarket, Suffolk England
Can you imagine working for a company like Lenovo? Must be interesting! If that Laptop stays cheap (doubt it) might buy it as an experiment! Guess I can always sell the parts if it turns sour.

Is there anything especially awkward about replacing a System board on a T42? Do I have to snap plastic to get the chassis apart?


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 3:43 pm 
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You'll find complete disassembly and component replacement instructions as well as parts listings in the HMM (Hardware Maintenance Manual). Scott.


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 Post subject: Re: IBM/Lenovo flaw?
 Post Posted: Mon Feb 23, 2009 5:17 pm 
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Joined: Thu Jan 15, 2009 1:27 pm
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Location: Stowmarket, Suffolk England
Wow

My printer hates me :)

Thanks Scott, will let you know if I get that MB for the thinkpad!

p.s found a board for the P-Bell

So in pratcise I stripped the P-Bell, comes apart quite easy :)

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=130239615261&ssPageName=STRK:MEWA:IT&ih=003


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