Need help with a dead Roomba 560

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Need help with a dead Roomba 560

Postby mashers » November 28th, 2016, 6:55 am

Hi everyone

This is my first post on this forum. I've never owned or used a Roomba before. I found a boxed Roomba 560 at the dump and brought it home. When I tried to turn it on, I got Err 5 on the screen. After searching online about this error, I decided to try a new battery. When I put the new battery in, the Roomba started up and seemed to work fine. It went through an initial setup procedure and then when I pressed the clean button it started cleaning the floor. When it had finished I turned it off.

I then put the Roomba on the charging dock to charge overnight. When I came back in the morning, it was dead. The charging light comes on on the dock when the Roomba is docked, but there are no lights on the Roomba at all. It won't turn on, and it doesn't respond to holding down Spot and Dock to try to reset it. I tried putting the original battery back in, but it still doesn't work. I also tried connecting the transformer directly to the Roomba instead of using the dock but it still doesn't work, with either the new or the old battery.

I used a digital multimeter to check some things. The transformer is outputting 22.4v which seems correct. The pins on the dock measure 2.7v, which doesn't seem right. However, this is with the Roomba disconnected (so I could access the pins); is it correct for it to output a lower voltage until the full load of the battery is applied, or should I be able to measure the full 22.5v across the contacts? I opened up the Roomba while the charger was connected directly to it but the battery was disconnected. No combination of the battery pins measures anything more than 0.8v (and most were 0v). Is this normal, or should I be able to measure 22.5v across the pins which charge the battery? Finally I tested the new battery and it's outputting 16.2v. I'm not sure this is normal either, since the battery I bought is supposed to be 14.4v. Would this matter?

At this point the only thing I can be sure works at all is the charger. I would really appreciate any feedback on the symptoms I'm getting and whether the measurements I've made so far indicate any particular type of fault. If any further information is needed please let me know!

Thanks in advance :)
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Re: Need help with a dead Roomba 560

Postby vic7767 » November 28th, 2016, 11:35 am

The low voltage 2.7 reading is normal. When the charging system detects the presence of a battery then the charging voltage will be switched on. You might try and pull up on all 4 of the metal tangs within the battery compartment and clean them. tzhis may help make better electrical contact with the new battery.
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Re: Need help with a dead Roomba 560

Postby mashers » November 28th, 2016, 11:46 am

Thank you vic7767. It's good to know that the charging dock is working normally. Do you know if it's normal not to register any voltage coming off the battery contact pins when the battery isn't connected but the charger is plugged in? I'll try your suggestion of bending up and cleaning the battery contacts and report back if it makes any difference. However, if there should be voltage registering across these pins when the charger is plugged in then I don't think it will make a difference anyway.
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Re: Need help with a dead Roomba 560

Postby vic7767 » November 28th, 2016, 1:22 pm

The Clean button should be flashing with a red ring indicating no battery. It should also give a verbal error 1 message. There will be no charging voltage applied to the battery contacts since a battery has not been detected by the Roomba charging firmware program.
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Re: Need help with a dead Roomba 560

Postby mashers » November 28th, 2016, 1:25 pm

Ok, so even with a dead or missing battery, it should come on and give some kind of error when the charger is connected? That's definitely not happening. Does this indicate a more serious fault with the Roomba itself?
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Re: Need help with a dead Roomba 560

Postby vic7767 » November 28th, 2016, 1:27 pm

Yes, there is a more serious issue with your 560. It may be as simple as a defective charger jack or a component failure on the main circuit board.
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Re: Need help with a dead Roomba 560

Postby mashers » November 28th, 2016, 1:29 pm

Wonderful, thank you so much for taking the time to reply and help narrow down the fault. I'll dismantle further and see if there's a problem with the charging jack. If it's a component on the main board then this is probably beyond economical repair as a new main board would cost more than the 560s are selling for on eBay!
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Re: Need help with a dead Roomba 560

Postby vic7767 » November 28th, 2016, 2:39 pm

If it winds up that the board is defective you might find just a board on ebay for a reasonable cost.
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Re: Need help with a dead Roomba 560

Postby MoppingRobot » November 29th, 2016, 8:35 pm

Hey mashers
It is a matter of hope that by this time you have got some advice regarding the issue. I want to say you that it is not a matter of worry for a new Roomba 560 users. You know that this robot comes with a self-charging station and having two virtual walls. If the battery is still fine, you can check the virtual wall. As my elder sister experience, if the virtual walls do not work accordingly, such problem may occur. so, check it first. If don't get any result, you can claim the warranty facility that manufacturer offered for limited one year. Hope, the problem will be solved. Thanks.
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Re: Need help with a dead Roomba 560

Postby vic7767 » November 29th, 2016, 11:41 pm

MoppingRobot wrote:you can claim the warranty facility that manufacturer offered for limited one year. Hope, the problem will be solved. Thanks.
The OP of this thread stated the 560 was found at the dump. There is no seller or warranty involved. The 560 operates independently of the virtual walls so if they are defective it does not stop the Roomba from working.
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Re: Need help with a dead Roomba 560

Postby t.antony » July 31st, 2017, 1:16 pm

Here's a great how-to video on how to fix it.
https://m.youtube.com/watch?v=ItVt8RM6BBI
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