Hey everyone,
I’m hoping someone here might have run into something similar or can point me in the right direction.
I purchased a Roborock Qrevo Pro in 2024 and it’s been great up until recently. A few weeks ago, we started noticing a lot more water than usual when the dock was washing the mop. Not long after that, the robot began having trouble docking properly—it would misalign, retry multiple times, and generally struggle to find its way onto the base.
Since support wasn’t very helpful beyond suggesting I send it in for a paid inspection, I decided to open up the dock myself. Inside, it was pretty clear that the peristaltic pump had failed internally and was spraying water around the dock. Most of the moisture seemed concentrated near the IR sensor area, so I cleaned that thoroughly and even reworked the solder. That improved the robot’s ability to aim and align with the dock, but during one of those attempts, charging suddenly stopped working entirely.
Since then, I’ve been trying to track down the issue. Right now, the charging contacts read about 4.2V when the robot isn’t on the dock, and that drops to around 2.6V as soon as the robot makes contact. The robot won’t properly enter charging mode unless I physically hold it in place. Even then, the dock doesn’t respond correctly—its LED doesn’t change state, and the app throws a “robot-to-dock communication failed” error. It also won’t allow any dock-related functions like washing the mop or emptying the dustbin.
I’ve verified that the dock still has around 20V internally and doesn’t appear to have any obvious broken traces. I also tried safely injecting 20V directly into the charging contacts using an external power source. When I do that, the robot does go into a “charging” state and shows up on the map at the dock location, but the dock itself still doesn’t recognize it properly and continues to throw the same communication error. It won’t respond to any commands.
At this point, I’ve checked the sensors, replaced the IR components (found an original part from a seller online, aiming to the dock is perfect again) and confirmed that power is present in the system. My current thought is that the dock is stuck in some kind of low-voltage detection mode and never transitions to full output because it isn’t completing whatever handshake or detection step it expects. That makes me think something on the dock’s control or power-switching side may have been damaged when the pump failed and leaked.
Has anyone experienced anything like this, where the dock outputs a low standby voltage but won’t ramp up or properly recognize the robot? I’m comfortable with board-level repair if I know where to look, but I don’t want to start blindly jumping components and risk making it worse. I’m mainly trying to figure out if this is something realistically repairable, or if I’m better off replacing the dock board entirely.
Any insight would be really appreciated!