Roomba 780 won't charge via dock

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Roomba 780 won't charge via dock

Postby duntov » June 27th, 2017, 8:33 pm

My Roomba 780 sees the docking station, but won't charge on it or as a result dock. The side charging port charges the battery fine. I'm not getting any continuity between the charging contacts and the battery compartment, and not sure there should be. Im not sure how to troubleshoot this further.

The dock has about 2.8 volts DC.

This is essentially what it does when trying to dock. https://youtu.be/rpmzGebhoO8

I'm at a loss for what needs to be done to find the problem or the solution and hoping you folks have seen this.
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Re: Roomba 780 won't charge via dock

Postby vic7767 » June 27th, 2017, 9:35 pm

Most of the time the cause is from the dc charging jack. Dust or other debris has insulated the normally closed contact inside the jack.
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Re: Roomba 780 won't charge via dock

Postby duntov » June 27th, 2017, 9:47 pm

By jack do you mean the one on the side or the dock? Both seem clear, but can blow them out with low pressure air.
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Re: Roomba 780 won't charge via dock

Postby vic7767 » June 27th, 2017, 9:49 pm

The one on the side of your 780 Roomba.
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Re: Roomba 780 won't charge via dock

Postby a1robotrepair » June 27th, 2017, 9:58 pm

Check out TechGuys pics on page 3 of this post:http://www.robotreviews.com/chat/viewtopic.php?f=1&t=10350&start=40
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Re: Roomba 780 won't charge via dock

Postby duntov » June 27th, 2017, 10:35 pm

That did it. Odd that never used that port till today. Thanks for the guidance.
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Re: Roomba 780 won't charge via dock

Postby t.antony » July 31st, 2017, 1:14 pm

Here's a great how-to video on exactly this model.
https://m.youtube.com/watch?v=ItVt8RM6BBI
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Re: Roomba 780 won't charge via dock

Postby TechGuy » July 31st, 2017, 4:10 pm

Please clean the brushes before showing your Roomba on video.
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Re: Roomba 780 won't charge via dock

Postby a1robotrepair » July 31st, 2017, 5:43 pm

:text-lol:
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