EDIT: Questo video mostra come disassemblare esattamente un modello 681: https://www.youtube.com/watch?v=s8K2gCzf...

Il Roomba 681 è già piuttosto rumoroso, ma di recente ha cominciato ad emettere un rumore acuto durante il regolare funzionamento, come se qualcosa sfrigolasse all'interno.

Ho controllato le spazzole, smontandole e pulendole, ma non ho trovato nulla di insolito, e il problema non si è risolto.

Inoltre, la spazzola laterale puliscibordi ad elica ha, da poco prima di questo problema, smesso di girare regolarmente, e si muove molto lentamente solo se accompagnata dal movimento del robot, altrimenti resta ferma.

[ENG]

EDIT: This video shows how to exactly disassemble a 681 model: https://www.youtube.com/watch?v=s8K2gCzf...

The Roomba 681 is already quite loud, but it has recently started making a high-pitched noise during regular operation, as if something is sizzling inside.

I've checked the brushes, taking them apart and cleaning them, but I haven't found anything unusual, and the problem hasn't gone away.

In addition, the helical edge-cleaning side brush has, since shortly before this problem, stopped turning regularly, and moves very slowly only if accompanied by the movement of the robot, otherwise it remains stationary.

⟐ Answered giugno 06, 2023 at 5:38 GMT-7

dove posso acquistare il motore dx per Aiper seagull pro che si è bloccato?

Oppure come posso fare per sbloccarlo?

ecco la foto dei pezzi che non riesco a montare,spero siano visibili

⟐ Edited by author novembre 21, 2020 at 4:10 GMT-7

torniamo a noi, il mio navibot sr8855 si avvia, esegue il conto alla rovescia e parte per lavorare un 10/20 secondi e poi riparte il conto alla rovescia… e bisogna impostare di nuovo il programma per rivedere quanto detto prima….

si riavvia di continuo…. spero possiate aiutarmi grazie in anticipo.

⟐ Commented aprile 13, 2026 at 8:33 GMT-7

⟐ Commented aprile 27, 2026 at 22:07 GMT-7

⟐ Commented giugno 08, 2025 at 4:08 GMT-7

⟐ Answered aprile 09, 2021 at 15:57 GMT-7

What did I do? I cleaned its laser area with a cotton tip and pressured air too. Nothing. The disk moves though.

Any suggestions on what could happen but mainly how to fix it?

Thanks!

⟐ Answer accepted dicembre 19, 2023 at 6:29 GMT-7

⟐ Commented giugno 06, 2025 at 7:26 GMT-7

My Neato Botvac 80 has been working well. Today I changed its battery. It was working well until now. It gets ready to start but then stops and give me the message “press OK to continue (3000)”. I press OK and it tries to get ready but again stops and sends the same message.

What did I do? I cleaned its laser area with a cotton tip and pressured air too. Nothing. The disk moves though.

Any suggestions on what could happen but mainly how to fix it?

Thanks!

⟐ Answer accepted aprile 23, 2024 at 11:47 GMT-7

It does not recognized the contacts of the docking station. It still search and find the docking station well, but search endless the loading contacts.

I'm still good in electronics but do not have any schematics and don't kow any about the firmware/programms of a lot of microcontroller build in.

⟐ Commented luglio 22, 2017 at 10:15 GMT-7

⟐ Commented giugno 07, 2025 at 10:19 GMT-7

⟐ Answered gennaio 29, 2024 at 12:56 GMT-7

⟐ Commented marzo 05, 2026 at 17:26 GMT-7

⟐ Answered giugno 04, 2024 at 17:23 GMT-7

⟐ Commented dicembre 06, 2022 at 23:15 GMT-7

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 marzo 23, 2026 at 7:41 GMT-7

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

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 dicembre 19, 2023 at 6:30 GMT-7