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Old 01-09-2008, 03:36 AM   #1
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Default Hitec Digital Servo making SOS noises..!!!

Hey guys,

I bought a used HS-5945MG Hitec servo. It makes a huming/static noise when moving or centering. The servo is digital.. Does this matter? Do digitals makes these noises..

Is this right? Will it ruin my receiver?

I cleaned and lubed the gears...still the noise is still there.

Any help would be great...

Thanks
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Old 01-09-2008, 05:19 AM   #2
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Originally Posted by Mpowerz View Post
Hey guys,

I bought a used HS-5945MG Hitec servo. It makes a huming/static noise when moving or centering. The servo is digital.. Does this matter? Do digitals makes these noises..

Is this right? Will it ruin my receiver?

I cleaned and lubed the gears...still the noise is still there.

Any help would be great...

Thanks
If by "SOS" you mean a beeping kind of electronic sound, that is normal in digital servos.
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Old 01-09-2008, 05:24 AM   #3
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Default mine are all noise makers

i'm trying to imagine exactly what you are saying but i have a few of these models and they all make "noise" when they move. it will constantly make a sound if its just off center for instance when you have it for steering. i cant describe the sound though - its more of a hum like you described.
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Old 01-09-2008, 06:16 AM   #4
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My Hitec digitals have always made a humming/low volume clicking/buzzing... Had them for over a year now and they are still as good as new, however, everytime I hear that noise it makes me spidey sense tingle as if something is wrong with them.

Mine have always done this and they still work great, so I guess it's normal!

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Old 01-09-2008, 10:27 AM   #5
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Originally Posted by nitrothugg View Post
i'm trying to imagine exactly what you are saying but i have a few of these models and they all make "noise" when they move. it will constantly make a sound if its just off center for instance when you have it for steering. i cant describe the sound though - its more of a hum like you described.
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Originally Posted by rabidsquirrel View Post
My Hitec digitals have always made a humming/low volume clicking/buzzing... Had them for over a year now and they are still as good as new, however, everytime I hear that noise it makes me spidey sense tingle as if something is wrong with them.

Mine have always done this and they still work great, so I guess it's normal!


Thanks for the input guys... I feel alot better....

I can hear the gears moving smoothly.. But there is a constant beep/elecrtronic nails scratching on a chalk board sound.. I hope that helps..

And a tick tick tick here and there one it's centered...
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Old 01-10-2008, 08:53 AM   #6
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Mine always hums... I thought all digital servos do that a bit? Maybe I'm wrong.
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Old 01-10-2008, 09:33 AM   #7
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hahaha yes the hums of the digitals servo's. Its normal i guess .I would only have these hums/beeping when using ko propo. never came across a sanwa or hitec with the problem. i only use ko propo for my throttle and sanwa's for steering .
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Old 01-10-2008, 12:29 PM   #8
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Mine always hums... I thought all digital servos do that a bit? Maybe I'm wrong.
I have never known a digi servo not to hum be they hitec, ko, futaba or jr. And i have owned all of these brands, i think i have about 20 servos at home... all digis...
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Old 01-10-2008, 01:01 PM   #9
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I think something is serious wrong with this... It is sucking power like nobody business...

from 6V to 4.5 in 15 min...
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Old 01-10-2008, 02:08 PM   #10
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I have never known a digi servo not to hum be they hitec, ko, futaba or jr. And i have owned all of these brands, i think i have about 20 servos at home... all digis...
Exactly. The hum is the sound made from the drive frequency (the motor is constantly turned on and off rather than completely on) of the servo's motor. Digital has a very high drive frequency versus and analog which is very low. The sound analogs make is just more like a vibration. Different manufacturers also use different drive frequencies so you will notice a difference in pitch between brands. Hitecs just tend to be a bit louder than many others, but it's completely normal.

Mpowerz- If you're dumping a receiver pack in 15 min then there is definitely a problem. Even running two high end digitals a 1200 receiver pack should still go 30+ minutes. The only thing that would reduce that is a bad pack (maybe it false peaked), not having the endpoints set correctly and/or binding in the linkages.
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Old 01-11-2008, 12:34 AM   #11
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all of my hitecs hum and beep like crazy,just the way they are

they are alot louder than my sanwa digis,
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Old 01-11-2008, 09:34 AM   #12
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I just installed a Hitec HS-5965MG servo on the t/b
of my truggie. I noticed that if the throddle rod
spring puts any amount of presure on the servo horn
the servo makes noise. It's like it is searching for it's
center setting. My HS-5925MG never did this. I think
the HS-5965MG has a narrower deadband. I think this
problem can be fixed with a digital servo programmer,
but they cost about $150. Has anyone on here ever
programmed there servos?
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Old 01-12-2008, 01:49 PM   #13
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Quote:
Originally Posted by Mpowerz View Post
I think something is serious wrong with this... It is sucking power like nobody business...

from 6V to 4.5 in 15 min...

what kind of battery are you using? kind of vehicle? depending on your setup, that may something you can control. dont throw it out yet!
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