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swilliams
Paper Tape
Posts: 3
Registered: ‎11-06-2015
Location: United Kingdom
Views: 2,942
Message 1 of 6

Yoga 700 14" - dc power jack replacement

Hi,

 

My son's Yoga 700-14 2-in1 has developed an unreliable power connection - the USB connector has to be positioned at a very precise angle for the battery to charge.   (For some reason, it's worst when the battery is <20% charged and becomes more tolerant when the battery is fuller - seems wierd but pretty sure it's not my imagination.)

 

Both the cable and the male connector for the supply seem to be in good condition.   There's nothing visibly wrong with the dc port inside the laptop (hard to see but in torch light all pins look intact and not bent), however, I suspect this might be the problem and needs replacing (perhaps a loose internal connection).

 

Has anyone else encountered this problem or done this repair?  It looks easy enough based on photos of the internals - the wiring isn't buried under any other components.

 

Is there a quicker fix that I'm missing?  I guess I'll check some voltages with a meter and that there are no loose connections before ordering a new part.

 

Thanks

 

Stuart

 

 

Sr Support Specialist
Posts: 8,344
Registered: ‎11-30-2015
Location: PH
Views: 2,886
Message 2 of 6

Re: Yoga 700 14" - dc power jack replacement

Hi swilliams , 

 

Greetings. 

 

The way how positioning (finding a sweet spot) for the dc in jack to accept power to charge is a possible point of failure.

You can physically check it internally for bad contacts before deciding on replacement. 

 

Herewith is the hardware manual (page 50) for location and guide.

Part number 5C10K61157  (c) DC-IN Cable L 80QD 

 

You can also verify specific part number using your serial number from the parts look up page to look for power assembly/ board and dc in cable /port.

 

Hope this help answer your query.

Update how it goes.

 

Regards



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swilliams
Paper Tape
Posts: 3
Registered: ‎11-06-2015
Location: United Kingdom
Views: 2,878
Message 3 of 6

Re: Yoga 700 14" - dc power jack replacement

Thanks for your  helpful reply.   According to the manual, a bunch of other components should be removed to access the power jack (See below).   I'm surprised this is necessary as from photographs I've seen both connections and the entire length of the power jack cable should be visible once the back cover is removed.    Is there another reason why these other components should be removed too - ie could they be damaged by removing and replacing the power jack?

"1010 Base cover" on page 33

"1020 Battery pack" on page 35

"1030 Hard disk drive" on page 36

"1040 PCI Express Mini Card for wireless LAN" on page 39

"1050 DIMM" on page 41

"1060 Fan assembly and heat sink assembly" on page 42

"1070 LCD unit" on page 44

"1080 System board" on page 46

 

Sr Support Specialist
Posts: 8,344
Registered: ‎11-30-2015
Location: PH
Views: 2,876
Message 4 of 6

Re: Yoga 700 14" - dc power jack replacement

Hi swilliams , 

 

Technically , not all uninstalling parts steps are necessary to simply remove the DC in power cable .

 

Simply assure that remaining flea power is drained . 

Just shutdown the system (powered off) , remove the ac charger , remove the battery and long press the power button for 12 seconds to drain flea power. 

 

Regards



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rfries
Paper Tape
Posts: 2
Registered: ‎12-30-2018
Location: US
Views: 456
Message 5 of 6

Re: Yoga 700 14" - dc power jack replacement

Hi Swilliams,

 

My wifes Yoga 90013ISK2 is having a similar issue.  I need to play with the power cable to establish a good connection and it seems to be worse when the battery level is lower.

 

can you reply on if you solved your issue by replacing the power jack or some other way?

 

thanks!

rfries
Paper Tape
Posts: 2
Registered: ‎12-30-2018
Location: US
Views: 217
Message 6 of 6

Re: Yoga 700 14" - dc power jack replacement

Hi all,

 

circling back here in case others have similar issues. 

 

i did end up following the above and spending the ~$8 on the internal DC part and taking the time to change out the part.  The computer had already gone completely dead, and even with the new part installed it would not power up.  Fortunately I had another laptop and backups so my wife had no interruption for her work over the last few months.

 

Next I ordered from Amazon a replacement power cord for ~$30.  I could have gotten the same 2-prong brick, but prefer the 3-prong, so that's what I got.  This too seemed not to fix the issue ( ie, the laptop would not power up ).

 

Not giving up, I found other forums where a reset of the battery had to happen by removing the battery, plugging in the power cord, powering on/off, and then reconnecting the battery:

 

https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Notebooks/Lenovo-Yoga-2-11-won-t-turn-on-won-t-charg...

 

this solved my issue and now everything is working with the new power cable, but not the original.

 

so, replacing the powercable may been the only thing needed, but it was the more expensive fix I should have just tried that 1st. I had called around repair shops and due to the non-standard power port, no one had a cable I could just try.

 

hope this helps others who may run into these issues!

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