Question about IBM ThinkPad T23 2647 Notebook

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ThinkPad repair from hell

I had a thinkpad T23 2647-4MU: 30Gb HD; 128Mb standard memory + 512Mb additional; PIII 1.13 GHz; XGA Active Matrix LCD (LG X10). One day it decided just not to do any more processing. The power would come on, the fan would speed up and then slow down, then speed up and then slow down, then speed up... well you get the picture. I couldn't get to POST. No beeps, no nothing except the fan noise and the power light glowing green. Diagnosis: dead motherboard. Solution: purchased cheap MB on eBay. This worked until I lost my balance while testing the LCD from the 4MU and cracked the functioning LCD! (The air was very blue at this time). OK. Diagnosis: Dead LCD. Solution: purchased cheap used LCD on eBay. Great! removed LCD panel from lid and find that I've purchased a Hitachi SXGA LCD. The ribbon cable from the 4MU was attached to an XGA LCD and is too small to fit into the SXGA screen..... I've found some places that sell the particular ribbon cable for this Hitachi LCD. Here are my questions: If I buy this cable, will I be able to plug it into the existing 4MU motherboard or did the T23's with SXGA use a different plug or different video card or whatever. Will the SXGA even work on my machine? The resolution for the SXGA sounds better than the XGA, but I've been happy with the XGA for years and I don't want to throw good money into the mix and still end up with a bunch of parts and screws and no functioning laptop. Help!!!!

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Re: ThinkPad repair from hell

Ive wondered about whether or not you can put a better screen on my t23 as well. i would suggest, if you happen to be a very good electrician, to maybe look up what each individual wire for the ribbon cable or motherboard ribbon cable input of the t23 is for and what each wire for that particular sxga screen is for. then, if youre insanely ambitious and good at soldering, you might be able to rig something up. i say this with my only experience being from doing a similar but not nearly as complex thing with a flash drive and looking up all the conductors of a usb cable.
it MIGHT work. it is most likely not worth it.

Posted on Mar 30, 2008

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Re: ThinkPad repair from hell

I've got one with the same problem. I've been through the model at Lenovo's site, and your best bet is to replace the lcd with what it came with. It's possible an sxga would plug in (there are always extra pins on the motherboard side), but probably wouldn't work. The cable is almost as much as the lcd. Good luck

Posted on Sep 22, 2007

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IBM T23 wont turn on after adding new RAM

Hi - according to memory suppliers your T23 has the following memory capacity / requirements:

  • IBM ThinkPad T23 maximum RAM capacity: 1GB
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  • The memory speed is: SDRAM 133MHz, PC133
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If you are meeting these requirements, you may have a defective module.

Also, according to Lenovo's page on the machine:

The system has 128MB or 256MB of memory standard and can be configured for up to 1GB of addressable memory. Memory options up to 512MB SDRAM SO DIMMs each can be added in the two available slots for memory expansion. The standard 128MB of memory is expandable up to 640MB and the 256MB of memory is expandable up to 768 MB of addressable memory with 64, 128, 256, or 512MB SO DIMMs without removing the 128MB SO DIMM that is standard in one of the internal slots for memory. For customers that need the maximum 1GB to which memory can be expanded, it is necessary to replace the 128MB or 256MB card with a 512MB card plus add another 512MB card in the extra slot. Only 133MHz DIMM memory can be used in this system. The use of 100MHz DIMM memory is not supported in the T23 systems.

This means yo can trouble shoot the 512MB modules individually by installing one of the original 128MB modules and one of the new 512MB modules (for a total system memory of 640MB). If it does not boot, try again with the other 512MB module. This will help you identify a defective module that may be preventing the machine from booting.

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Summary IBM ThinkPad T Series notebooks are the perfect balance of performance and portability. ThinkPad T Series notebooks deliver outstanding performance, full functionality and long battery life in an easily portable, thin and light design. ThinkPad T42 mobile workstations also offer outstanding graphics display for displaying detailed designs, dramatic demos and high powered presentations anywhere you need to be. The ThinkPad family also features exclusive IBM ThinkVantage Technologies and ThinkVantage Design. Together, they deliver business advantage by helping to save time and money and enabling you to focus on your strategic goals rather than your technology. Features
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  • Screen Size: 14.1" TFT active matrix XGA
  • Memory: 256 MB (installed) / 2 GB (max), DDR SDRAM, 333MHz
  • Hard Drive: 40 GB, 5400 rpm
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  • Networking: Ethernet, Fast Ethernet, Gigabit Ethernet
  • Weight: 4.9 lbs.
  • Included Operating System: Microsoft Windows XP Professional
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  • Built-in Devices Speaker , ThinkLight , Wireless LAN antenna
  • Width 12.4 in
  • Depth 10.2 in
  • Height 1.5 in
  • Weight 6 lbs
  • Color black
  • Localization English / United States
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  • Budget
  • Wireless capabilities
  • Processor Intel Pentium M 725 / 1.6 GHz
  • Data bus speed
  • 400Mhz Processor features Enhanced SpeedStep technology , Power-optimized processor system bus
  • Chipset type Intel 855GM
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  • Cache size 2 MB
  • Installed Size 256 MB / 2 GB (max)
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  • Memory specification compliance PC2700
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Storage Controller
  • Storage controller type IDE
  • Floppy Drive None
  • Hard Drive 30 GB - 4200 rpm
  • Storage Removable None
  • Hard drive type Portable
Optical Storage
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  • CD / DVD read speed 24x (CD) / 8x (DVD)
  • CD / DVD write speed 24x
  • CD / DVD rewrite speed 24x
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  • Widescreen Display No
  • Graphics Processor / Vendor Intel Extreme Graphics 2
  • Video Memory Dynamic Video Memory Technology 2.0
  • Audio output type Sound card
  • Audio codec AD1981B
  • Audio output compliant standards AC '97 , DirectSound
  • Audio Input None
Input Device(s)
  • Input device type Keyboard , TrackPoint
  • Modem Fax / modem - CDC
  • Max transfer rate 56 Kbps
  • Protocols & Specifications ITU V.90
  • Modem features V.92 upgradable
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  • Networking / Wireless LAN Supported Yes
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  • Expansion Slots Total (Free) 1 ( 1 ) x CardBus - Type I/II/III , 2 Memory - SO DIMM 200-pin
  • Interfaces 2 x Hi-Speed USB - 4 pin USB Type A , 1 x Parallel - IEEE 1284 (EPP/ECP) - 25 pin D-Sub (DB-25) , 1 x Display / video - VGA - 15 pin HD D-Sub (HD-15) , 1 x Modem - Phone line - RJ-11 , 1 x Network - Ethernet 10Base-T/100Base-TX - RJ-45 , 1 x Headphones - Output - Mini-phone stereo 3.5 mm , 1 x Microphone - Input - Mini-phone 3.5 mm
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  • Compliant Standards DDC-2B , ACPI 2.0 , ACPI 1.0b
  • Power device form factor External
  • Voltage Required AC 120/230 V
  • Technology 6-cell Lithium ion
  • Installed Qty 1
  • Mfr estimated battery life 4 hour(s)
Operating System / Software
  • OS Provided Microsoft Windows XP Professional
  • Software Drivers & Utilities
Environmental Standards
  • EPA Energy Star Compliant Yes
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