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The Roomba 650 is a Fourth Generation robotic vacuum released by iRobot in August 2012. This device is hand-free and is programmed to clean our homes. With little manual operation needed, this robot have revolutionized house cleaning.

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side edge brush not spinning

new base board brush put on rumba 650 tested with battery it works will not work on rumba.

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I just fixed my Roomba 760 with the same problem. The side brush had stopped working but Roomba still operated but once in a while the TANGLE light would come on. After checking and cleaning the whole Roomba I found there were no tangles. Took me a couple days of troubleshooting. Took the motor out and applied voltage and it ran. Ran the Roomba without the side brush motor in it and Roomba operated just fine and the TANGLE light never came on. So I took the side brush motor/gear assembly apart and checked the gears. No worn or broken teeth so I greased all the gears with white lithium grease and gave the central shaft of the motor and tiny drop of 3 in 1 machine oil. Reassembled the unit and put it back into the Roomba. Put the side brush back on but was careful not to tighten the side brush central screw too much. Now it works great. The side brush functions perfectly and the tangle light does not come on. Apparently the gears in the side brush assembly were not running free enough and needed lubrication and/or the central screw on the brush was too tight. I remember I put on a new brush earlier and I may have tightened the screw too much.

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I also took out the motor and it ran fine. I also looked at the gears but they never felt tight or damaged. I guess I'll try and lub them but I don't feel good about that. I noticed that it never tries to run at all. I feel it's a sensor but with out a schematic I don't know what sensor or if its a combo of sensors? I have searched for a schmatic but to no avail. I guess they are tight lipped about their product.

If anyone know how to find a schematic Please let me know...



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karen will be eternally grateful.
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