This is precisely what happened to the SG90 I was testing just today on a simple mechanism I'm building. It was working fine at lunchtime, and then, when I tried it again this evening; 'NOTHING'... not working at all. I just opened it up and the brown wire is detached. Just to be sure I stripped the wire, attached the servo connection to the tester, put it to the 'sweep' setting, and when I touched the brown wire to its original terminal, the motor started sweeping. I think the wire got pulled out because it's a tight fit to get the motor into the moving mechanism so I'll have to find a better position so the wires don't get pulled out. Thanks for your help. You've earned my sub.
It can be due to several reasons such as signal frequency incompatibility, servo overload, internal variable resistor failure or internal control board issue. what happens if you try to move it by hand when operating. does it stop vibrating at a certain position?
I am a begineer I plug the servo to my Flight Control board At first it was okay, but now the servo didn't response In total there are 2 servos broke Do you know what is the potential cause of this issue?
Did you check the voltage you are giving to the servo? If the servo works and then gets damaged, then it is probably being burned to over voltage. Another issue can be stalling of turbo due to jamming or overloading which can burn it as well.
Try to move your servo by hand, if it is locked in place then it is probably signal pin issue. If the motor is freely moving then + or - pin is not connected properly. Did you test the motor using servo tester?
Hello bhai mere servo me continues awz aa rhi hai aur vibrate krr rha hai and uska baring bhi free ho gya hai. Plzz bata do ye kya hua hai aur fix kase kre
There can be several reasons for this problem. Maybe the pulse signal you are sending it is trying to operate it beyond its maximum angle limit. Also you need to use a regulated power supply for your servo, normal transformer-based power supply will not work. Also this can be an issue with the variable resistor that the servo control IC uses to detect your servo motion and correct its position or some internal gears are probably slipping. If you have another similar servo then replace and if the problem persists then the issue is confirmed with your servo signal or power supply.
Why are these servos particularly so faulty? I bought 6 of them in a pack, and they are all faulty. They don't even react to the transmitter commands. Is it faulty assembly line or something else. Do you know? ;) Thanks for the video. Very Helpful. I will go now to fix all of my 6 servos. Leo(Architect & Engineer)
Hi Leo, Thanks for the appreciation. Please dont throw away your servos, I am sure all your motors are also fine, just their wire connections are broken from the inside which is not visible unless you open the servo case. These servo motors particularly suffer from this broken wires issues and most of the times the rest of the motor is completely fine. So I am pretty sure your motors will also start to work once you resold the broken wire connections. Similar thing happened to me except that only 3 of 8 were faulty in my case and the fault was same as in this video. Rest of the motor mechanism is not that bad as per their price tag though. Oh and I will be curious to hear from you if you were able to fix your servos or not. Let me know when you do it :)
@@researchcell Unfortunately, I was less lucky. I opened all of them, but the wires were good. Also my servos were the next model, and the PCB board was directly soldered with the motor itself via 3 metal bars. So, in my case, it is PCB board fault. I ordered Savox and Etronix, the proper quality make once and with metal gears, not this plastic once. So, Cheap price unfortunately is not always the crucial thing, if you want to make a good lasting RC models. ;) Leo(Architect & Engineer)
Oh thats not good. You should file a dispute if you bought them from Aliexpress or Amazon. Or may be place a feedback. The seller should know that all his motors were faulty. Its totally unfair. I wish your next motors work with your project. I would love to see the video once its functional :)
@@researchcell I bought them around a year back. And they were really cheap, around 6-10 pounds for 6 of them on eBay. So, I wouldn't worry much about it. Once I receive my other servos and connect it with my model, I will message you. It seems like from other forums as well, this model is particular faulty with everyone who buys them. Must be an assembly line faulty, or they are not testing them properly. ;) Leo
Bro mere pass servo motor h wo transmitters ke sath work nhi kr rha h or ager usi servo motor ke jgh dusra lgta hu to work krta h or jo work nhi kr rha h wo servo motor servo tester ke sath work kr rha h ye kaise ho sktaaaaa h
Your servo can overload your transmitter causing it to shutdown due to overload safety. Probably the servo you are using is larger than your transmitter’s maximum amp rating.
This is precisely what happened to the SG90 I was testing just today on a simple mechanism I'm building. It was working fine at lunchtime, and then, when I tried it again this evening; 'NOTHING'... not working at all. I just opened it up and the brown wire is detached. Just to be sure I stripped the wire, attached the servo connection to the tester, put it to the 'sweep' setting, and when I touched the brown wire to its original terminal, the motor started sweeping.
I think the wire got pulled out because it's a tight fit to get the motor into the moving mechanism so I'll have to find a better position so the wires don't get pulled out. Thanks for your help. You've earned my sub.
How much volt and ampere is needed for this motor. My mobile charger is 5V and 4A
Yes it will easily run on your 5V 4A charger.
my SG90 has no disconnected wires but still not moving. it just vibrates. what do i do?
It can be due to several reasons such as signal frequency incompatibility, servo overload, internal variable resistor failure or internal control board issue.
what happens if you try to move it by hand when operating. does it stop vibrating at a certain position?
@@researchcell when i moved it with hand? Well at a certain angle it moves a bit but vibrating again
Then I suspect there is an issue with either the gears or the internal variable resistor.
I am a begineer
I plug the servo to my Flight Control board
At first it was okay, but now the servo didn't response
In total there are 2 servos broke
Do you know what is the potential cause of this issue?
Did you check the voltage you are giving to the servo? If the servo works and then gets damaged, then it is probably being burned to over voltage. Another issue can be stalling of turbo due to jamming or overloading which can burn it as well.
Which number of screw driver is needed to open those micro screws
These screws are quite small, so a precision screwdriver set might be the best option to avoid stripping the screws.
I have a question, I need more powerful servomotor but with a low cost,so is it safe to change the motor of a servomotor to a more powerful one ?
if you know what you're doing. you can also get the mg90s, which is cheap and noticeably better than the sg90
Hello bro please help.. my servo motor is running but gear is not moving.. what shall I do..
Try to move your servo by hand, if it is locked in place then it is probably signal pin issue. If the motor is freely moving then + or - pin is not connected properly. Did you test the motor using servo tester?
@@researchcell no I don't have that..
I have added a video for you about the servo motor testing. You should check it.
Hello bhai mere servo me continues awz aa rhi hai aur vibrate krr rha hai and uska baring bhi free ho gya hai. Plzz bata do ye kya hua hai aur fix kase kre
There can be several reasons for this problem. Maybe the pulse signal you are sending it is trying to operate it beyond its maximum angle limit. Also you need to use a regulated power supply for your servo, normal transformer-based power supply will not work. Also this can be an issue with the variable resistor that the servo control IC uses to detect your servo motion and correct its position or some internal gears are probably slipping.
If you have another similar servo then replace and if the problem persists then the issue is confirmed with your servo signal or power supply.
Why are these servos particularly so faulty? I bought 6 of them in a pack, and they are all faulty. They don't even react to the transmitter commands. Is it faulty assembly line or something else. Do you know? ;) Thanks for the video. Very Helpful. I will go now to fix all of my 6 servos. Leo(Architect & Engineer)
Hi Leo, Thanks for the appreciation. Please dont throw away your servos, I am sure all your motors are also fine, just their wire connections are broken from the inside which is not visible unless you open the servo case. These servo motors particularly suffer from this broken wires issues and most of the times the rest of the motor is completely fine. So I am pretty sure your motors will also start to work once you resold the broken wire connections.
Similar thing happened to me except that only 3 of 8 were faulty in my case and the fault was same as in this video. Rest of the motor mechanism is not that bad as per their price tag though.
Oh and I will be curious to hear from you if you were able to fix your servos or not. Let me know when you do it :)
@@researchcell Unfortunately, I was less lucky. I opened all of them, but the wires were good. Also my servos were the next model, and the PCB board was directly soldered with the motor itself via 3 metal bars. So, in my case, it is PCB board fault. I ordered Savox and Etronix, the proper quality make once and with metal gears, not this plastic once. So, Cheap price unfortunately is not always the crucial thing, if you want to make a good lasting RC models. ;) Leo(Architect & Engineer)
Oh thats not good. You should file a dispute if you bought them from Aliexpress or Amazon. Or may be place a feedback. The seller should know that all his motors were faulty. Its totally unfair. I wish your next motors work with your project. I would love to see the video once its functional :)
@@researchcell I bought them around a year back. And they were really cheap, around 6-10 pounds for 6 of them on eBay. So, I wouldn't worry much about it. Once I receive my other servos and connect it with my model, I will message you. It seems like from other forums as well, this model is particular faulty with everyone who buys them. Must be an assembly line faulty, or they are not testing them properly. ;) Leo
Sure, i will wait for your message :)
also very easy for the gears to just implode
Yes it happens under continuous load due to plastic gears but some metal gears servo variants are available as well for such applications.
My ground wire is disconnected too
Yes, detached wires seem to be more common in small servos than I assumed.
Bro mere pass servo motor h wo transmitters ke sath work nhi kr rha h or ager usi servo motor ke jgh dusra lgta hu to work krta h or jo work nhi kr rha h wo servo motor servo tester ke sath work kr rha h ye kaise ho sktaaaaa h
Your servo can overload your transmitter causing it to shutdown due to overload safety. Probably the servo you are using is larger than your transmitter’s maximum amp rating.