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Charge pin replacement For Thinkpad G40?

R30/R40, A30/A31, G40/G50 and Z60/Z61 Series. NOT for AMD-Ryzen.
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Gonzaleitor
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Joined: Thu Nov 10, 2022 4:01 pm
Location: Buenos Aires, Argentina

Charge pin replacement For Thinkpad G40?

#1 Post by Gonzaleitor » Thu Nov 24, 2022 11:35 am

Si, i found a cheap G40 in marketplace (around 15 dollars) but the thing is that the Jack is kind Of Unique and I don't have something similar to that 4pin Jack. That's why i tought Of replacing it with another that is similar to the power supplies that i have. What do you think? Is it worth it?
Is there any compatible Jack that has the same capabilities but with different shape?

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Re: Charge pin replacement For Thinkpad G40?

#2 Post by RealBlackStuff » Thu Nov 24, 2022 1:11 pm

According to the picture below, there are only 2 connections: 2x +, 2x -.
https://www.getthatpart.com/images/prod ... 2K7092.jpg
If you get a DC-in socket from e.g. a T60/T61, such as this: https://www.ebay.ie/itm/175106263405
You can connect the G40 connector + cables to the red T60 cables and the G40 - cables to the T60 black cables.
Ignore the blue cable.
Then get any old T60/T61 era charger, cut of its DC-cable and connect it similar to above to your G40 charger.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, M900 Tiny (all with W7/SP1)

Gonzaleitor
Posts: 9
Joined: Thu Nov 10, 2022 4:01 pm
Location: Buenos Aires, Argentina

Re: Charge pin replacement For Thinkpad G40?

#3 Post by Gonzaleitor » Thu Nov 24, 2022 1:16 pm

Thanks.
The power socket is connected via that Jack? Is not soldered to the motherboard?
Would it work if i connect the power supply directly to the t60 Jack? I mean, like if the Jack was normally installed

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