Power Problems

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indicium · #1 Post by **indicium** » Tue Sep 02, 2008 8:31 pm

I believe that I have loose DC connector on my T40. Sometimes when I plug in the adapter, it doesn't work and I have to move it around in the connector. I looked on the Lenovo website and can't find any information about it. Any help is appreciated.

karim_ps · #2 Post by **karim_ps** » Tue Sep 02, 2008 8:59 pm

just take your computer apart and then use a soldering iron to repair the missed solder sub DC connector and everything is gonna be just fine i see so many computers with the same problem and i repair them easily
Sorry for bad English

awolfe63 · #3 Post by **awolfe63** » Tue Sep 02, 2008 10:10 pm

He makes this sound easy.

I've taken apart many T4x machines - but the one time I tried this repair it was really tough to get into the machine that far.

But - if you do decide to DYI - here is the repair manual.

sjthinkpader · #4 Post by **sjthinkpader** » Tue Sep 02, 2008 10:18 pm

Get one of those Milwaukee screw drivers and a nice magnetized #1 tip at Home Depot. Make the job much easier.

fasterbybike · #5 Post by **fasterbybike** » Wed Sep 03, 2008 1:03 am

awolfe63 wrote:But - if you do decide to DYI ...

... and here are some pictures.
The DC socket connects to the mobo via a short lead and a plug. You can get new ones via ebay etc. Good luck with the repair.

Nick Y · #6 Post by **Nick Y** » Wed Sep 03, 2008 4:43 am

indicium wrote:I believe that I have loose DC connector on my T40. Sometimes when I plug in the adapter, it doesn't work and I have to move it around in the connector. I looked on the Lenovo website and can't find any information about it. Any help is appreciated.

Sounds like the problem I had on the T41. Try 'T41p Battery not charging -Interesting Cause' at
http://forum.thinkpads.com/viewtopic.ph ... +connector
for details of how I fixed it. I hope this helps you.

indicium · #7 Post by **indicium** » Wed Sep 03, 2008 7:03 pm

Today, I not so sure it isn't the adapter as when I was moving the plug around in the jack nothing but i had to move the adapter and it worked. This is going to take a little more research.
One question though, can the connector be loose and still function well?

awolfe63 · #8 Post by **awolfe63** » Wed Sep 03, 2008 10:03 pm

I muddled by with a loose connector for 4 months before it finally failed.

Nick Y · #9 Post by **Nick Y** » Thu Sep 04, 2008 1:53 am

indicium wrote:Today, I not so sure it isn't the adapter as when I was moving the plug around in the jack nothing but i had to move the adapter and it worked. This is going to take a little more research.
One question though, can the connector be loose and still function well?

Can you borrow someone else's adaptor, or use your on their Thinkpad? That would narrow the problem down.

indicium · #10 Post by **indicium** » Thu Sep 04, 2008 9:28 pm

I have another adapter for a 770, but its rated at 3.7 amps versus the 4.5 for the current adapter. I'll try it anyway

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