First time poster and new member so please be gentle, I am a pure self taught DIYer and tinkerer that loves learning new stuff and fixing stuff.
I have encountered a DC brushed motor that doesn't turn when power is applied, from a little googling I understand it can have something to do with the windings on the rotor. There is a circuitboard mounted on the bottom and I am wondering if any of the components can be the culprit?
It has been mounted in a toy trike and after fiddling around with my multimeter I understand the motor is the problem, I've attatched an image if it helps.
Thank you in advance and thanks for accepting me to this fun forum.

/Richard

 

You need to locate the two conductors that go into the motor itself and apply power there.
Also measure the resistance across the motor.
Do you know the voltage of the motor?
Max.

 

The components on the board seem to be noise diminishing parts and have very little to do with whether the motor runs. That is why you need to do what Max said. You are merely eliminating parts which are mostly irrelevant to getting the motor to run.

It is likely that the brushes have worn out and when you try to measure the ohms of the motor, your reading will be rather high compared to the few tens or hundreds of ohms the motor should have. Fiddling with the shaft might get the motor to run for a moment, but if that happens, it virtually guarantees the brushes are worn out.

 

The components are for noise reduction. Apply power directly to the terminals and see if it works. Try to figure out the voltage of the motor.

 

To obtain approximate operating voltage, rotate the armature at a known rpm and extrapolate the generated voltage for ~2000rpm.
Max.

 

Thank you for your response, I sat down today and desoldered the board and I then saw 2 more small caps inside the housing so I opened up the motor and it looks well used. Checked the windings with my multimeter and the poles seem intact, can it have anything to do with the current applied to it?

 

Did you measure the resistance across the leads, that appears to be a very low pole count, high current motor, I would expect just an ohm or two, 12v applied would seem like a typical voltage for that, but high current, so you need a battery with the capacity to operate it, Gel Cell, car battery to test,
Max.

 

The commutator might benefit from careful cleaning. Dirt/oxide could be limiting the coil current.
When reassembling the motor, don't forget to lubricate the bearings.

 

Did you measure the resistance across the leads, that appears to be a very low pole count, high current motor, I would expect just an ohm or two, 12v applied would seem like a typical voltage for that, but high current, so you need a battery with the capacity to operate it, Gel Cell, car battery to test,
Max.

I got a hold of the original toy and I'll clean it up and test it