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New MGM problem?
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pb4ugo
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New MGM problem? - 04.11.2007, 10:39 PM

Finally got my 16024 that I had the repair difficulties with installed in my Savage today. It's acting weird though. After I plug my batts in (6s) It starts beeping the error beeps (the constant timed one) at me WHETHER THE CONTROLLER IS ON OR OFF!

I've never experienced anything like this. Any ideas?
   
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pb4ugo
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04.12.2007, 06:39 PM

I'll update here. I tracked it down to a bad receiver. Replaced with another one. Was operating two servos fine with a ubec for power. As soon as I turned it back on after plugging the mgm into the receiver, but without power to the Mgm, the MGM started beeping again and smoked the receiver:035:

That's two hundred dollar receivers in the last two days this MGM smoked. This is AFTER getting it back from repair. This MGM just doesn't like me.:mad:1
   
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BrianG
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04.12.2007, 07:06 PM

To be clear, you are removing the red wire from the throttle cable right?
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pb4ugo
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04.12.2007, 07:32 PM

Quote:
Originally Posted by BrianG
To be clear, you are removing the red wire from the throttle cable right?
No, this is an opto controller.
   
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squeeforever
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04.12.2007, 07:50 PM

I think you have to anyway, but I am probably wrong. I have heard of the MGM's smoking receivers by sending the total voltage to them. Try it. I would try it with a cheap AM receiver or something though...
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pb4ugo
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04.12.2007, 08:07 PM

Quote:
Originally Posted by squeeforever
I think you have to anyway, but I am probably wrong. I have heard of the MGM's smoking receivers by sending the total voltage to them. Try it. I would try it with a cheap AM receiver or something though...
Everybody else I've seen who has tried removing the red on an opto MGM ended up with a non-working controller. This controller also worked previously without removing red and without frying a receiver.
   
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AAngel
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04.12.2007, 08:08 PM

Yeah, from I've heard, if the internal bec goes, it sends the battery voltage to the receiver. Don't feel too badly, I got a 16016 and hardly got to run it. It's going back to MGM via Mike tomorrow.
   
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pb4ugo
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04.12.2007, 08:09 PM

Also guys, don't forget that I didn't have power going to the controller, only the radio system.
   
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pb4ugo
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04.12.2007, 08:10 PM

Quote:
Originally Posted by AAngel
Yeah, from I've heard, if the internal bec goes, it sends the battery voltage to the receiver. Don't feel too badly, I got a 16016 and hardly got to run it. It's going back to MGM via Mike tomorrow.
That sucks on your MGM. Unfortunately, be ready for a wait. This one, though does not have a BEC.
   
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BrianG
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04.12.2007, 10:23 PM

Well then, if you only had your UBEC hooked up, I would suggest checking the output of the UBEC. If it is faulty, it can send full battery voltage as well...
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pb4ugo
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04.12.2007, 10:48 PM

Quote:
Originally Posted by BrianG
Well then, if you only had your UBEC hooked up, I would suggest checking the output of the UBEC. If it is faulty, it can send full battery voltage as well...
Forgot to mention that voltage at the receiver was 5.57-5.58 the whole time (I have a Sensor). The transceiver still powers up and connects with my transmitter (for those unfamiliar with the Sensor, there is aubible and visible confirmation of events such as these), there just isn't any transfer of signal to the servos. Well there was, until I plugged in my MGM.
   
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zeropointbug
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04.12.2007, 11:09 PM

Sounds like the MGM controllers are more of a burden than an investment.:002:


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pb4ugo
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04.12.2007, 11:27 PM

Quote:
Originally Posted by zeropointbug
Sounds like the MGM controllers are more of a burden than an investment.:002:
Hasn't been fun for me. In 9 months of owning this, I've had 10 minutes of run time. It also looks like it has cost me $200 worth of receivers on top of the $325 I bought it for.
   
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zeropointbug
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04.13.2007, 12:36 AM

Seriously man, I feel sorry for you. I've had stuff like this happen to me with electronics i've bought, not fun. :019:


“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens
   
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BrianG
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04.13.2007, 12:37 AM

Are the receivers salvageable? There might be a protection device inside that you may be able to replace to breathe new life...
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