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Source for ThinkPad 760 power AC adapters

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sdfox7
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Source for ThinkPad 760 power AC adapters

#1 Post by sdfox7 » Sun Dec 02, 2018 1:27 pm

Does anyone know of a source for obtaining the recommended OEM 20v 2.5A power supplies for the IBM ThinkPad 760? I won two of these laptops on eBay (760E and 760XD) and I am not expecting the adapters to be included. There are knockoffs on eBay but I would prefer to have the original. In lieu of that, will a 16V 3.36A from a ThinkPad 600 suffice?

EDIT: I don't think the 600 charger would work because I believe the 1996 machines have a 4 pin design into the back of the laptop unit.
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Thinkpad4by3
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Re: Source for ThinkPad 760 power AC adapters

#2 Post by Thinkpad4by3 » Sun Dec 02, 2018 2:01 pm

I've seen I think 0.1" headers used to connect and then you can find a 5.5mm barrel jack or whatever the 600 charger is and make a little adapter. I can check how it fits next week.
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The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

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Re: Source for ThinkPad 760 power AC adapters

#3 Post by sdfox7 » Mon Dec 03, 2018 1:14 am

Thanks for the info. Due to the age and rarity of these machines, I'll be on the hunt for something official. It might take time but I'm sure something will pop up here or on eBay. I'm not sure if your solution requires hacking, and I don't want to risk ruining these machines trying to find out.
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
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RealBlackStuff
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Re: Source for ThinkPad 760 power AC adapters

#4 Post by RealBlackStuff » Mon Dec 03, 2018 7:23 am

Search for P/N 85G6691 and FRU 85G6701
This guy on eBay got 3 genuine ones: https://www.ebay.com/itm/302920362562

Or P/N 85G6704 and FRU 85G6705
This guy on eBay got 2 genuine ones: https://www.ebay.com/itm/152998887103

etc.
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sdfox7
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Re: Source for ThinkPad 760 power AC adapters

#5 Post by sdfox7 » Mon Dec 03, 2018 11:18 am

RBS

The machine calls for 20V at 2.5A, those are 16V.
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
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Thinkpad4by3
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Re: Source for ThinkPad 760 power AC adapters

#6 Post by Thinkpad4by3 » Mon Dec 03, 2018 12:21 pm

sdfox7 wrote:
Mon Dec 03, 2018 11:18 am
RBS

The machine calls for 20V at 2.5A, those are 16V.
I've seen those machine runs on as low as 12. In the realm of power circuitry, the difference between 16 and 20 is negligible.
Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

RealBlackStuff
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Re: Source for ThinkPad 760 power AC adapters

#7 Post by RealBlackStuff » Mon Dec 03, 2018 1:32 pm

sdfox7 wrote:
Mon Dec 03, 2018 11:18 am
The machine calls for 20V at 2.5A, those are 16V.
Show me where you found this false 20V "recommendation"!
That's only good if you want to burn the motherboards!
Time to do your homework!
All those 760 models run from 16V/2.2A with 4-pin female DC-connectors.

sdfox7
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Re: Source for ThinkPad 760 power AC adapters

#8 Post by sdfox7 » Tue Dec 04, 2018 1:36 pm

RealBlackStuff wrote:
Mon Dec 03, 2018 1:32 pm
sdfox7 wrote:
Mon Dec 03, 2018 11:18 am
The machine calls for 20V at 2.5A, those are 16V.
Show me where you found this false 20V "recommendation"!
That's only good if you want to burn the motherboards!
Time to do your homework!
All those 760 models run from 16V/2.2A with 4-pin female DC-connectors.
Here is the machine, look near the top of the label near the IBM logo:

http://sdfox7.com/760.png
Last edited by sdfox7 on Wed Dec 05, 2018 2:02 pm, edited 1 time in total.
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
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RealBlackStuff
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Re: Source for ThinkPad 760 power AC adapters

#9 Post by RealBlackStuff » Tue Dec 04, 2018 2:30 pm

Every 760 model in the tpvol3.pdf HMM only mentions 16V/2.2A (=35W) adapters.
Occasionally a 50W version is also mentioned, but I never saw any P/N or FRU for those.

PS: you should change that HUGE picture into a link, it is WAY too big!
Please read the Forum Rules, especially Section 5: viewtopic.php?f=16&t=14339

Thinkpad4by3
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Re: Source for ThinkPad 760 power AC adapters

#10 Post by Thinkpad4by3 » Tue Dec 04, 2018 3:04 pm

My TP 755 says 20V on the bottom and 16V at the port.
Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

jdrou
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Re: Source for ThinkPad 760 power AC adapters

#11 Post by jdrou » Tue Dec 04, 2018 5:58 pm

Thinkwiki indicates quite a few models around that time that say 20V 2.5A on the machine but 35W (16V 2.2A PN 76H0119) in documentation.
http://www.thinkwiki.org/wiki/Power_Con ... in_hexagon
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sdfox7
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Re: Source for ThinkPad 760 power AC adapters

#12 Post by sdfox7 » Wed Dec 05, 2018 2:04 pm

RealBlackStuff wrote:
Tue Dec 04, 2018 2:30 pm
Every 760 model in the tpvol3.pdf HMM only mentions 16V/2.2A (=35W) adapters.
Occasionally a 50W version is also mentioned, but I never saw any P/N or FRU for those.

PS: you should change that HUGE picture into a link, it is WAY too big!
Please read the Forum Rules, especially Section 5: viewtopic.php?f=16&t=14339
Hi RBS, I just fixed that into a link. I originally clicked the picture icon in the toolbar (IMG) and when I submitted the post it turned it into a photo.
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista

sdfox7
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Posts: 131
Joined: Mon Sep 01, 2014 10:06 pm
Location: Danbury, CT, United States of America

Re: Source for ThinkPad 760 power AC adapters

#13 Post by sdfox7 » Wed Dec 05, 2018 2:10 pm

RealBlackStuff wrote:
Mon Dec 03, 2018 7:23 am
Search for P/N 85G6691 and FRU 85G6701
This guy on eBay got 3 genuine ones: https://www.ebay.com/itm/302920362562

Or P/N 85G6704 and FRU 85G6705
This guy on eBay got 2 genuine ones: https://www.ebay.com/itm/152998887103

etc.
Thanks for the links, I just purchased the 2 adapters from the second listing.
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista

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