How much does it cost to repair a robot vacuum that won't turn on?

We will provide the exact price after diagnostics — it depends on the type of fault. Battery replacement is usually the most affordable repair, while mainboard work requires component-level expertise. We agree on a cost estimate before starting, and if you decline, we return the robot with no obligation. All repairs come with a warranty.

Can you replace just the battery instead of the whole robot?

Yes, this is one of the most common repairs we do. We replace the battery with a new compatible pack and calibrate the BMS. Typically, the robot works like new afterwards. Battery replacement takes 1–2 working days.

My robot has been sitting unused for months and now won't turn on — can it be fixed?

In most cases, prolonged inactivity leads to deep battery discharge. If the cells have not fully degraded, we can restore them with a controlled charge. If the cells are irreversibly damaged, we replace the battery. We evaluate each case individually.

How can I tell if the problem is the battery or the mainboard?

If the robot shows absolutely no response and no indicator lights up on the charging dock — the battery or BMS is most likely at fault. If the robot tries to start (e.g., a light comes on briefly then immediately goes out) — the mainboard may be to blame. An accurate diagnosis can only be made with test equipment at the service centre.

Do you repair all robot vacuum brands?

Yes, we work with all major brands — iRobot Roomba, Roborock, Xiaomi, Ecovacs Deebot, Dreame, Samsung, and Eufy. Our experience since 1993 spans a wide range of electronic devices.

How long does a robot vacuum repair take?

Battery replacement takes 1–2 working days. Component-level mainboard repair takes 3–5 working days depending on parts availability. For water damage cases requiring PCB restoration, the total time can reach 5–7 working days.

Can a robot vacuum be repaired after water damage?

In many cases, yes. We clean the mainboard with an ultrasonic bath, remove corrosion, and replace damaged components. Success depends on how quickly the robot was switched off and dried after the water ingress. The sooner you bring it in, the better the chances of a full recovery.

Robot vacuum won't turn on — repair in Riga

If your robot vacuum has stopped turning on, does not respond to the power button, and shows no signs of life even on the charging dock, the most common culprits are the battery, the mainboard, or the power button itself. At the SATER service centre on Silmacu iela 6, we have been diagnosing and repairing robot vacuums in Riga for over 30 years — since 1993. Our technicians work with all major brands: iRobot Roomba, Roborock, Xiaomi, Ecovacs, Dreame, Samsung, and Eufy. We measure individual cell voltage with a multimeter, check BMS (battery management system) protection status, diagnose mainboard SoC failures, and inspect power button membrane condition. Often a robot's apparent "death" is simply a BMS lockout after deep discharge — cells have dropped to 0 V and the protection circuit refuses to charge them. In other cases, the cause is water ingress on the mainboard, leading to corrosion and short circuits. Bring your robot vacuum to Silmacu iela 6, and we will inspect it with no obligation.

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Likely causes

Dead or degraded battery — cells at 0 V — Li-ion battery cells can drop to 0 V after prolonged storage without use. In this state, the BMS (battery management system) locks out charging because it considers the cells unsafe. The robot will not turn on and shows no reaction to the charging dock. We replace the battery pack or, if the cells are not irreversibly damaged, restore them with a controlled charge from a lab power supply.
Mainboard SoC failure — If the battery is healthy and outputs the correct voltage but the robot does not respond, the mainboard is at fault. A common cause is SoC processor failure due to overheating or electrostatic discharge. Externally, it looks like a completely "dead" robot. Repair requires component-level diagnostics and microchip replacement.
Power button membrane wear — The power button on robot vacuums is typically a membrane type — a thin flexible film with printed contacts. After thousands of presses, the contact layer wears out and the button physically stops sending a signal to the mainboard. The robot won't respond to button presses but may still start via the companion app. We replace the membrane button — a quick and cost-effective procedure.
Water damage to the mainboard (PCB corrosion) — Robots with mopping functions or those used in humid environments can suffer from water ingress into the housing. Water causes corrosion on PCB traces and IC pins, which can lead to short circuits or total mainboard failure. We clean the board with an ultrasonic bath, restore damaged traces, and replace corroded components.
BMS lockout (battery protection circuit) — The battery management system (BMS) is a built-in protection circuit that monitors each cell's voltage, temperature, and charge current. After deep discharge, overcharge, or temperature exceedance, the BMS locks out and cuts power to the robot. Even if the cells themselves are healthy, the BMS blocks current flow. We diagnose the BMS with lab equipment and, if necessary, replace the BMS board or the entire battery pack.

What you can check yourself

Make sure the charging dock is plugged in and its indicator light is on — try a different outlet to rule out a power supply issue.
Place the robot directly on the charging dock and ensure the contacts on the bottom of the robot and on the dock are clean — wipe them with a dry cloth or rubbing alcohol.
Press and hold the power button for 15–20 seconds — some models perform a hard reset when the button is held down.
If the robot has been unused for several months, leave it on the charging dock for at least 3–4 hours — some BMS circuits allow a slow recovery charge.
Check the companion app (Mi Home, iRobot, Ecovacs, etc.) for error codes or notifications — this can help pinpoint the problem.

When to bring it in

If after all these checks the robot still won't turn on and does not respond to either the button or the charging dock, it is time to bring it to the SATER service centre at Silmacu iela 6. It is especially important to seek professional help if the robot has been in contact with water or liquid, if the battery is swollen or emits an unusual smell, or if the device has been stored in a discharged state for a long time. We diagnose the issue, agree on a cost estimate before starting any work, and provide a warranty on all repairs. Call +371 67377002.

Fast on-site diagnostics. Repair price quoted after inspection. Repair warranty: 3 months. Battery replacement warranty: 6 months.

Affected brands

iRobot Roborock Xiaomi Ecovacs Dreame Samsung Eufy

Frequently asked questions

Why customers choose SATER

Dedicated specialist per category. Your device is repaired by an engineer who only handles this device category — never others.
30+ years of experience. The service centre has been operating since 1993.
On-site diagnostics. Diagnostics are free even if you decide not to proceed with the repair.
Custom-built batteries. We don't just replace batteries — we build custom packs from SONY, MOLICEL, SAMSUNG, LG and PANASONIC cells.
We serve all of Latvia. Our service centre is in Riga and we accept devices from anywhere in the country.