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Lights on but motor not working
Tags: Syma X9
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heli_cop
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Guests
February 23, 2012 - 2:00 pm

My friend just asked me to fix his infrared controlled helicopter. Lights are on but 2 motors are not working, won't fly, won't get the blades working. The remote is good. I have used power supply instead of battery, charged the heli's battery as well. Is it possible that the blades won't turn if the tiny gear at the bottom of one motor is lost??Please I need answers. Thank you.

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CPD
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Guests
February 24, 2012 - 12:37 am

About 9 times out of 10 when people ask about lights being on, and motors not working, it's the battery.

 

When the batery is charged but bad, it has enough power to turn on the lights. But, it doesn't have the power to run the motors.

 

Look at the batery, because it's probably soft and bloated. Either the batery is junk to begin with, or it wasn't treated right. You have to wait 5 minutes MINIMUM between flight and charge and charge and flight. (for best results, 15-20minutes)

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heli_cop
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Guests
February 24, 2012 - 7:59 pm

CPD said

About 9 times out of 10 when people ask about lights being on, and motors not working, it's the battery.

 

When the batery is charged but bad, it has enough power to turn on the lights. But, it doesn't have the power to run the motors.

 

Look at the batery, because it's probably soft and bloated. Either the batery is junk to begin with, or it wasn't treated right. You have to wait 5 minutes MINIMUM between flight and charge and charge and flight. (for best results, 15-20minutes)

I can say that its not the batteries because I used an AC to DC POWER Supply 9 volts/converter so it can have a steady supply. Its still not working. I have noticed that one of the motor's gear is missing. Also, when i test the motor using a multimeter they won't turn but the meter has deflection. Is it possible that the motors are bad and needs replacement? 

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CPD
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Guests
February 25, 2012 - 1:28 am

9 out of 10. I guess this is the oddball 1 out of 10 "what the?" moments. These things run off of "3.7v" but they're dead at 3.7v, and can only handle up to about 4.1-4.3V. 4.5v, and chances are it's blown. If I'm reading it right, did you somehow put 9 volts into this thing? Can the motors be disconected from the motherboard on this one? One of those two's what's fried. I'm guessing one of three things happened-

 

1 The motor with a gear was bad, and the other one burned up from too high rpms from no gear

2 The gear broke, and damaged something on the motherboard that makes them not work (unlikely)

3 the 9v power supply burned it up and it needs new motors and new MB. (not worth it to repair at that point, and VERY likely if I'm reading what you did right)

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