Electronics > Repair
What resistor ohm will work better to repair this waterpik?
<< < (3/3)
Gyro:
That's a shame.

A higher value resistor will actually drop more voltage and so dissipate more heat if the motor is overloaded, so will fail quicker. What he's done in the video is to replace the 0.47R resistor with a much larger body non-fusible 0.56R resistor. Great for persuading the motor to spin again but throwing the overload protection of the original design out of the window. Using a slightly lower value fusible resistor would work if the design is marginal, but it really should work as designed, including staying safe.
fzabkar:
If you remove the motor, does the shaft rotate freely? Can you turn the geared mechanism freely?
cruff:
Is there also discoloration on the trace leading from the + terminal of the capacitor, or is that a lighting issue. Have you checked to see if that cap has a problem?
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