RealBlackStuff made a better recommendation than I did so go with what he said. Schottky diodes can tend to have a larger forward voltage drop when rated for higher reverse voltage. So it is best to match the reverse voltage rating and not go way above it. In this case 40 volts is what you want. Asi...

It's a diode and K is the cathode end. Surface mounted components have a two or three digit code for identification because there isn't room to print more on the part body. Unfortunately the few characters that fit end up not being unique. The first entry in the table at https://www.s-manuals.com/sm...

On-board RAM can be disabled. viewtopic.php?f=6&t=49126&hilit=disable+memory

All seven model number characters are needed to look up the original configuration. The link at the top of the forum page labeled MTM has the configuration data. The page can take a looong time to open but it is active. For example if the model number is 2686-46u then the original configuration is a...

There is a configuration utility for DOS that may help. https://thinkpads.com/support/Thinkpad-Drivers/download.lenovo.com/lenovo/content/ddfm/T23.html Under the Software and Utility heading find Configuration utility for DOS - ThinkPad Version: 4.44 One command of possible interest is: .[HVEXPansio...

https://thinkpads.com/support/Thinkpad- ... /A30p.html

Your drivers are at the above link.

I recently finished installing Win98SE on my T23 using your guide. Thank you for posting it as I would not have succeeded without your guide. The following is a list of things that I had to adjust to get it working. Step 6 seemed to run but didn't save the extracted files that I could find. The swit...

23. For the modem driver, run tpmd19gx.exe

I do not find tpmd19gx. tpmd1g9x is in the list though. Is that the file you intended to call out?

https://www.os2site.com/sw/hardware/ibm ... index.html

The LWIK-3ZVPYF executable is the fourth table entry, listed as acp90r2.exe. The companion file is acp90r2.txt. Hope this is what you need.

The Drivers link brings up a security warning in Firefox. There may be an expired certificate or some such. The system update file in the drivers link is 3.16.0006 while the one found by andromeda92 is newer, 3.16.0010. No matter, version 3 system update executables always return the message "no upd...

There are a variety of Win95 versions as listed below. 0196 Part no. 000-37080 US OSR1 (sometimes OSR2, Gateway) 0796 Part no. 000-45234 US OSR2 0796 Part no. 000-45236 US OSR2 (+ Plus! pack) 0197 Part no. 000-59944 US OSR2.1 (+ USB patch) 1297 Part no. X03-52599 US OSR2.5 (+ USB patch + IE4.01) 129...

There are card reader drivers in the drivers archive.
https://thinkpads.com/support/Thinkpad- ... m/R61.html

To follow up on the SP4 rollup containing POS updates, I never could get it to install without corrupting the XP installation. Some of the POS updates require the SSE2 instruction set which leaves the T23 out since it is Pentium 3. Still, working with the A31 Pentium 4, the rollup just didn't work f...

The documentation I have lists contents as shown below. Windows XP SP4 Final includes all Windows XP updates and many updated components with all their latest updates up to including January 2016 (some POSReady updates have been included). Included components are: .NET Frameworks 1.0, 1.1, 2.0, 3.0,...

I have done a bit more with WSUS and found that my troubles were a combination of unfamiliarity with WSUS and a bug in the routine. MKISOFS.EXE is used by WSUS to create an ISO. It is not part of the program and must be downloaded. The download fails even though the link in WSUS appears to be correc...

WSUS looked promising so I gave it a try. The computer was a Thinkpad A31 with a wiped hard drive. Windows XP SP3 was clean installed and three drivers updated to produce a clean Device Manager display. Then WSUS 9.2.1 was started and I requested it to produce an ISO upon completion. Throughout the ...

In August 2020 Microsoft discontinued Windows Update support for XP and Vista. https://support.microsoft.com/en-us/help/4569557/windows-update-sha-1-based-endpoints-discontinued https://answers.microsoft.com/en-us/windows/forum/windows_vista-update/sha-1-update-was-available-two-days-ago/a42109b7-89...

You can download DVD Express here: www.metzomagic.com/Help/download/DVDExpress.zip This is not a Thinkpad =specific version but it runs on my T23. You can convert it to the version intended for the T23 by clicking on Drivers at the top of this forum and navigating to the T23 drivers page. Under the ...

And here is one that may be the newest, 6.68.15: https://download.lenovo.com/ibmdl/pub/p ... au415w.exe

Here is a newer version, 6.68.13: https://download.lenovo.com/ibmdl/pub/p ... au413w.exe

Version 6.20 (same as 6.11 according to release notes) is here: https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/g6u410ww.exe Version 6.30 is here: https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/g6u420ww.exe Version 6.32 is here: https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobile...

tpribors wrote: ↑

Tue Dec 10, 2019 10:47 am

I did check it, the thing does supply DC so it's probably the sensing/configuration resistor.

Did you measure the resistance from the sense pin to ground? I don't have a 135W power supply but my 170W supply measures 1900 Ohms from the sense pin to ground.

There have been several threads about this on the forum over the years. This one is quite good: viewtopic.php?p=218045#p218045

Without the hassle of trying to rewrite the EEPROM, replacing the system board is the only option.

Many many versions of Power Manager have been released over the years. Some releases fail to install or fail to function on some Thinkpads. The older the Thinkpad, the more likely there will be issues. For the T43, it is so old that the docs are not maintained or checked for accuracy. Finally Lenovo...

I installed XP on my T43 this past summer. This was from recovery disks, not a retail or oem XP disk. There are no unknown devices in device manager but I did do some manual driver updates. Lenovo's advice on their power manager driver version is not helpful for the T43. The latest XP power manager ...

Perfect. Don't need or want "like" feature. Been on a few cigars and whisky forums with this and it's nothing more than an popularity contest. Leave the attention seekers to social media and facebook. I agree 1000%. I am a member of another forum that has the "like" feature and it constantly detrac...

What happens if you press F9 - Setup Defaults

Also try Lenovo's System Update to get the latest drivers.

https://download.lenovo.com/pccbbs/thin ... 7.0088.exe

This file contains the bios revision history.
https://download.lenovo.com/ibmdl/pub/p ... uj46us.txt

Latest bios is here
https://download.lenovo.com/lenovo/cont ... /w500.html