Hair trimmer

[Optimus_Prime]

Ok. So today I've Tear down my QT4011

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[Zmint]

Ok. So today I've Tear down my QT4011

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That was one wise decision you made
Just replace those batteries plus a little tweaking with the motor brushes and you are ready to rock 'n roll

 

[Optimus_Prime]

That was one wise decision you made
Just replace those batteries plus a little tweaking with the motor brushes and you are ready to rock 'n roll

The motor running for 1-2 sec and switching off automatically . (I've tested with old given batteries and with power supply ON ). Don't know why ? Maybe Motor doesn't getting proper voltage throughout running period. Starting current that was getting properly but not running properly.
And how much a pair of 750mah 1.2 battery will cost ?

 

[Zmint]

The motor running for 1-2 sec and switching off automatically . (I've tested with old given batteries and with power supply ON ). Don't know why ? Maybe Motor doesn't getting proper voltage throughout running period. Starting current that was getting properly but not running properly.
And how much a pair of 750mah 1.2 battery will cost ?

The possible scenario I guess is that the barriers are gone flat(completely dead) and the circuit is designed such as it will not power the motor until the batteries hold some current.
You can try one thing though, in place of those rechargeable batteries try normal alkaline batteries(2x 1.5V in series) and see if the motor works.
P.S.: Do not put the trimmer on main power as long your are checking with normal batteries.
If it works well then you can purchase new rechargeable NiMH batteries that will cost(offline) between Rs 100-250/-(Maxium 300/- for a pair). P.S. : The mAh value can vary.
If the motor does not power on (through the circuit) with normal batteries then check the motor directly powering it with a single 1.5V normal battery. This way you will know where the fault is hiding.

 

[Vamsee227]

Hello,
I had checked the motor directly with the battery, it is working fine. But, after putting the batteries into the PCB, the motor doesn't receive the power. There must be some problem with the PCB. Any help