iFixit - Answers With Device "Robotic Vacuum Cleaner"

Samsung Jet Bot VR30T80313W: Battery won't charge.

Mon, 23 Mar 2026 07:41:37 -0700

So I just got my robot vacuum back after lending it to my brother.

Turned out it stopped working a while ago.

When I got it back I started to diagnose it.

The first thing I noticed was, when it's docked in the charginstation, it turns on and I can adopt it into the smart things app. The battery read 0% and no matter how long it charges it wouldn't go up.

So I started by disassembling the battery down to its individual cells. Turned out 5 out if 6 cells were completely dead (absolute 0 volts).

So I ordered some new cells and put the battery back together. The battery now shows 21,7 volts. But it still doesn't want to run outside the chargingstation.

When I use a multimeter on the battery, while it's connected to the chargingstation it shows about 25 volts on d+ to d- (the plugs from the vacuum to the PCB on the battery). And still 21,7 volts on b+ to b- (the spot welded tin to the battery). It has now charged for about 2 hours and it's still about 37% charged (so not getting charged).

I've tried to put the PCB under an thermal camera to see if anything gets hot, but it doesn't. Even with it plugged into the chargingstation, without the chargingstation or it disconnected from the robot. I've also tried to connect 21 volts 1 a with a powersupply connected both on d+ to d- and on b+ to b-, yet nothing gets hot.

Anyone have any idea on how I could fix this?

I'm pretty new to this stuff, but I do watch some youtubers like NorthridgeFix and TronicFix so I have some general idea.

Should I disconnect the cells again and maybe try injecting voltage over some of the chips on the PCB or check the resistance on some of the caps? If so i would love some guidence. I don't have a chip programmer yet, but I will order one sooner or later, if needed.

Image of the PCB here:

https://imgur.com/a/eqJpynu

I'm also working on a guide on the disassembly of the batter here (ask and ill add you in order to view):

Disassembling Samsung Vacuum Battery VCA-RBT80 VR30T80313W/WA

⟐ Commented Mart 23, 2026 at 7:41 GMT-7

iRobot Roomba 805: What is charging error 5

Sat, 12 Oct 2024 06:10:48 -0700

why does the charging error 5 come on when my rumba 805 is charging

⟐ Commented Ekim 12, 2024 at 6:10 GMT-7

Samsung NaviBot SR8855: How to disassemble Samsung navibot SR8875?

Tue, 19 Dec 2023 06:30:29 -0700

Hi,

Would like to know how to remove the upper part of the navibot SR8875 ? I removed all screww but still locked in the front ?

If you want, you can also answer me in french (if you're french).

Thanks,

Matt

⟐ Answer accepted Aralık 19, 2023 at 6:30 GMT-7

iRobot Roomba 560: Why won't my Roomba turn on?

Sun, 27 Oct 2024 04:35:58 -0700

When I press the power button, the Roomba doesn’t move. The power button does not light up either. Help?

⟐ Commented Ekim 27, 2024 at 4:35 GMT-7

iRobot Braava 380t: Low area coverage and quick draining of Battery

Tue, 19 Dec 2023 06:30:56 -0700

I have a i Robot Braava 380 model mopping and sweeping machine .Of late it is covering only an area of 12X6 feet area .It is moving with in that area .and the battery also getting discharged in less than 20 minutes .

Please suggest a solution for both the problems

⟐ Answer accepted Aralık 19, 2023 at 6:30 GMT-7

iRobot Roomba 880: Roomba not picking up

Mon, 02 Dec 2019 08:02:24 -0700

I have had my roomba for about 1 1/2 years. It is significantly quieter than it used to be, and there is no air exhausting from the back vents. It’s still picking up larger debris but does not have much suction. I have cleared out debris from the rollers, filter, bin, and wheels and it didn’t help. Local vacuum repair won’t fix roombas. Any suggestions?

⟐ Answered Aralık 02, 2019 at 8:02 GMT-7

Roborock S8 MaxV Ultra: LiDAR won’t spin

Wed, 27 Nov 2024 08:03:10 -0700

The LiDAR will stop spinning. This seems to be a common problem with their design. Sometimes it’s debris that gets into the housing. Others the motor blows out. There are YouTube videos showing repairs on older models but none on this model. A video would be helpful as the design seems to be slightly different.

Also, any advice on upgraded replacement parts to fix the weak points would be helpful.

iRobot Braava Jet M6: Why is it not spraying liquid

Fri, 07 Nov 2025 17:01:46 -0700

machine is brand new, just out of the box, and not spraying liquid. Yes, the reservoir is full, battery charged, front of jet clean….

⟐ Commented Kasım 07, 2025 at 17:01 GMT-7

iRobot Roomba 800: How do you replace the red door that covers the filter bin?

Wed, 05 Jul 2023 07:22:49 -0700

How do you replace the red door that covers the filter?

⟐ Answered Temmuz 05, 2023 at 7:22 GMT-7

iRobot Roomba 650: Roomba won't leave the dock

Sat, 20 Apr 2024 07:33:07 -0700

Hi, my Roomba 650 won't leave the dock anymore. It won't do it on schedule nor when I press the clean button. If I take it off the dock it will work perfectly and dock itself as well. I suspected a battery issue and changed the battery but this didn't help. I've also reset the Roomba a few times and moved the dock to different places.

I haven't seen anyone having this problem even after some serious searching. Any ideas?

⟐ Answer edited Nisan 20, 2024 at 7:33 GMT-7

Samsung Powerbot R9250: Water vacuumed up - vacuum stopped working

Sat, 15 Aug 2020 17:45:32 -0700

My Sammy is dead! Sammy sucked up some water and quit working. I dried it out by setting it out in warm weather and in the sun and cannot get it to come back on or connect to the recharge station. I have switched it off and on and done numerous things but no luck. I have done all kinds of internal checks but cannot see anything to trip other than the master switch. Is there a fuse or something else I need to check to restart. I did not see very much water in the dust bin.

⟐ Answered Ağustos 15, 2020 at 17:45 GMT-7

Samsung NaviBot SR8855: Why does my navibot dont switch on?the battery is charged, but no ligh

Sat, 22 Nov 2025 05:01:13 -0700

My navibot Doesn't switch on. The Battery is charged but all lights are off. I tried to Clean it but Nothing changes.

⟐ Commented Kasım 22, 2025 at 5:01 GMT-7

iRobot Roomba 770: The Roomba just goes in circles, how do I fix this?

Tue, 28 Oct 2025 05:34:36 -0700

When my Roomba turns on, it will only spin around in circles and wont go anywhere. How do I fix this?

⟐ Commented Ekim 28, 2025 at 5:34 GMT-7

Roborock S7: Roborock s7 - side brush keep falling while in use

Sun, 05 Jan 2025 06:38:16 -0700

Hey,
My Roborock S7 is 2 years old and lately, the side brush started to fall off during operation.
I keep finding it in different areas of the house, this is annoying.
When locking it back again, it feels like the screw is tight.
Any idea how to fix it?

⟐ Answered Ocak 05, 2025 at 6:38 GMT-7

iRobot Roomba 960: Charging contacts on Roomba 960.

Sun, 21 Jan 2024 06:46:58 -0700

I need to repair my Roomba. How can I remove the charging contacts from the body?

⟐ Commented Ocak 21, 2024 at 6:46 GMT-7

Neato Botvac 80: Neato Botvac D80 issue.

Tue, 26 Jan 2021 13:04:23 -0700

I own 2 of these units (identical). By swapping a couple parts I have determined that the battery, and charger base are not the problem. Bad unit has no power at all. If I put it on the base to charge, Home button lights up green, tells me to turn the switch on (it’s already turned on, but I press ok anyways). Home button turns to amber (slow blink to indicate charging has started). After between 10-30 seconds, it changes to rapid amber blinking on home button and after about 3 seconds it shuts down, reboots and starts the process all over. Ideas?

⟐ Answered Ocak 26, 2021 at 13:04 GMT-7

Samsung POWERbot R7070: Left wheel is not working properly

Fri, 15 Jan 2021 13:51:01 -0700

I recently bought a refurbished powerbot r7070 and the left wheel stopped working. Everything was great for about a week before this issue occurred. I was hoping it was a minor issue but when i opened it up i couldn't see any jam or other visible issues. I am assuming it is the motor for that wheel. I called samsung and they dont sell parts for this model anymore.... So i am not sure what to do. I love the vaccum and i can get a refund for it but i got it at a once in a lifetime deal and would have to pay hundreds more for the same model =/

⟐ Commented Ocak 15, 2021 at 13:51 GMT-7

iRobot: My iRobot keeps saying error 26

Wed, 18 Jun 2025 10:42:43 -0700

Hi I changed the filter, bag , and brush also checked if anything is stuck any where. I reset it but it does the same thing . Comes out of the charging station maybe about a foot or two out then stops and says error 26

⟐ Commented Haziran 18, 2025 at 10:42 GMT-7

Irobot Roomba 980: How do I replace the gasket between the bin and the robot’s vac?

Thu, 10 Apr 2025 12:44:56 -0700

Debris isn’t making it into Romba’s bin because the gasket that connects/feeds the debris from the robots vacuum to the bin is torn and falling off. Is this a replaceable part or should I try to super glue it back in place?

⟐ Answered Nisan 10, 2025 at 12:44 GMT-7

iRobot Roomba 4100: What is the least distructive way to open battery box?

Thu, 07 Jun 2018 15:56:29 -0700

I purchased a set of replacement batteries online but the Roomba battery box seems to be glued shut. I could open it with a Dremel cutting disc but I was wondering if anyone had tips for opening these boxes without damaging them (I consider cutting through them to be damage).

⟐ Answer edited Haziran 07, 2018 at 15:56 GMT-7