Tip & How-To about Neato XV-21 Pet & Allergy Automatic Vacuum Cleaner

How to fix the neato vacuum

It's a great design BUT the weak point in the design is the quality of the 100uF electrolytic capacitors that they use on the main board. After 2-3 years these cause problems with the Neato not turning on (dim green lights only) and its vision gets worse so it has problems with eratic cleaning patterns and can't redock itself.

in this video we show show to fix all those issues by changing the main board capacitors. It's like new again now! See it redocking itself late on in the video, it is about 50ft away in another room and comes back for charging!

Here is a video showing a quick temporary fix and the full fix showing the change of all the electrolytic capacitors.

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2 Answers

neato vacumm won't turn on


Here is a video showing a quick temporary fix and the full fix showing the change of all the electrolytic capacitors.

Apr 17, 2013 | Neato Vacuums

1 Answer

no power


Hello,
if it does not power up, then it means its having a power problem. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby not making it to power on.
This unit must have a power supply board in it where power enters from the mains. A capacitor, fuse, diode, etc may have been defective on the power board and maybe that's why its not making the unit turn on. There might also be some disconnection or something, inside the unit which is not making it to power on.
To actually find out what's wrong, you need to disassemble the unit with a screw driver and check what's wrong. You will be needing a meter in order to test the components on the power board, once you detect any bad component, you can make necessary replacement at any electronics accessories store withing our vicinity. This is the only way by which you can detect the problem.
Of course, testing the power board with a meter will require someone that has the ability. So it you can't, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.
I wish you the best of luck.

Aug 02, 2011 | Vacuums

3 Answers

On a Faema Due expresso machine: Viewing the circuit board from the component side, with the two 0.1 uf caps on the left. The two pins on the left of the eight pin connector are completely burned from the board. The 4 amp fuse is blown and the soldering on pins 2 and 3 (numbering from left to right) are pretty much vaporized.......Please advise


The descripion you have send is only for the board. We need to know also how is the machine.
Is the machine working good up today and you have descover this after a fault?
If there was a fault what was that?
We need some of this information in order to get the whole picture and history of the machine.

Jul 27, 2011 | Vacuums

1 Answer

Sewing machine Guru needed ;) Elna Grasshopper (new to me) circa 1950 The light works, but there was no hummm when knee pedal engaged. I have the motor out, and it is very stiff to turn. I'm at a total loss when it comes to motors and electricity. It doesn't smell burned, doesn't smell at all beyond normal machine smells. (Yes, I made detailed notes and diagrams as I took said motor out!) One other note. The long thing which my husband said might be a capacitor -- it looks like a main fuse without the metal ends -- had a pile of black gunk that looks as if it melted off or out of the cylinder / capacitor / fuse looking thing. Any thoughts would bed much appreciated. Thanks -- barb


I just purchased a fairly tidy Elna 'Grasshopper' sewing machine (1951) with the same leaking capacitor problem. I carefully removed the capacitor for examination. It is actually three capacitors in one - no chance of a direct modern replacement, but anyone with those three capacitors, a couple bits of insulated wire, and a small soldering iron should be able to shoehorn them into the same space. There is a circuit diagram printed on the side of the original capacitor, showing one 0,2 micro-Farad capacitor between the two mains power buses (the two wires from the top of the original capacitor which are soldered to the top of the two outer brass bars where all the wires attach), and following on from each of those a 0,0025 micro-Farad capacitor (so, two of those), the other side of both of those joined together and going to the chassis - representing the one cable from bottom of the original capacitor, which is screwed down. Easier than it sounds - I just have to find those capacitors. They must be NON-polarised capacitors, rated for 250 Volts, and I plan to use radial (rather than axial) style, aluminium type ones - very common. From what I can gather, I believe they are needed for that lovely little motor to run properly - to have torque ('oomph') at start-up.
As to the motor not wanting to turn... difficult to say from a distance. Could it be that the 'brushes' are sticking - or even worn out? There are two, top and bottom, that ride on the commutator - the ring of bronze-colored squares on one end of the motor, behind the wiring. They are made of carbon, are what power the motor, and are held with hidden springs. With much use they wear down, but I would not expect them to be completely gone. The upper one is easiest to reach - there is a brass screw above it - careful the spring doesn't get away. Only other thing would be fouling of the bushings that allow the axis of the motor to turn. A little penetrating oil could help there. The motor should turn very freely.

May 16, 2011 | Vacuums

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