Roomba Discovery 4210 Dust Bin Fan

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Roomba Discovery 4210 Dust Bin Fan

Postby SCP » December 1st, 2012, 6:50 pm


I have a Roomba Discovery 4210. The dust bin fan won't spin. I purchased a new dust bin w/ fan and the fan still won't spin. I took some 300 grit sand paper and cleaned the metal contacts that the dust bin slides into, still nothing.

Any ideas????
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Re: Roomba Discovery 4210 Dust Bin Fan

Postby mfortuna » December 1st, 2012, 7:01 pm

Although rare, it could be the motherboard that has gone bad. Try attaching a 9V battery to the dust bin contacts (on the dust bin) to check if the motor runs.
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Re: Roomba Discovery 4210 Dust Bin Fan

Postby vic7767 » December 1st, 2012, 7:11 pm

Q18 and Q35 NPN transistors are used to turn on and off the dust bin motor. Head over here for a picture of where they are located.
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