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HelicopterMain Discussion › 3GX Not Booting Up
01-26-2013 01:32 AM  4 years agoPost 21
jimmyG

rrNovice

Wisconsin

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By "looks bleak" do you mean it is unlikely they will cover it?

If so, what a shame. Just reinforces the bad press that the 3GX gets.

The heli has never been flown.

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01-26-2013 01:36 AM  4 years agoPost 22
jimmyG

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Wisconsin

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Can it be sent somewhere for testing?

If I did something wrong I don't expect a replacement.

That said, I don't think I did anything wrong.

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01-26-2013 01:47 AM  4 years agoPost 23
Stephen Born

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USA

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Start completely over with the set-up, as you did when you first took it out of the box. Make sure all wires are tight and everything is looked over. Your radio is on DSM2, bind plug is in, and Rx battery is fully charged.

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01-26-2013 02:52 AM  4 years agoPost 24
jimmyG

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Wisconsin

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I started over. Everything connected correctly. Bat fully charged. Bind plug in...

No luck

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01-26-2013 03:33 AM  4 years agoPost 25
Stephen Born

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USA

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I'm all out of ideas, sorry Jimmy. Call HeliPal on Monday.

Dave?

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01-26-2013 03:50 AM  4 years agoPost 26
dkshema

rrMaster

Cedar Rapids, IA

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Darn, had a reply all typed out, and hit close window instead of submit reply. It's been a long week on the road to sunny California. All work, however, no play.

OK --

If the 3GX doesn't see signals from a receiver, it will just sit and stare at you, with no lights, sound, or action. Kind of like Al Gore, but with a personality.

That leaves a few possibilities open:

-----

If you have a full-up external receiver that works, go ahead and bind THAT receiver to your TX. Then, using the cable set that came with the 3GX unit, hook the working RX to the 3GX unit as it is supposed to be. Make sure you hook it up correctly and that the receiver is being supplied with power.

Then, turn things on and see if the 3GX comes alive.

There is also the possibility that your satellite is DOA, or that you have a problem with the cable that goes between the two.

I know it's a pain, but you've come this far, you might as well try all the tricks.

-----

Another thought that comes to mind is to hook the unit up to your PC and the Align 3GX software when you have all your stuff hooked up and apply power. The PC and 3GX ought to communicate if there is life aboard. If it communicates, attempt to download software V3.0 and see if that fixes things.

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How are you supplying power to the 3GX system? What is the power source, and where is it plugged in?

-----

Failing all of that, give a shout out to RunRyder member AlignRC -- see if Jeff Fassbinder can help you out. Or contact RunRyder member Dino Spadaccini and see if he might be able to get you some satisfaction.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-26-2013 10:46 PM  4 years agoPost 27
jimmyG

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Wisconsin

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Hi Dave, love the Al Gore referrence.

I'm powering the 3GX with a 3s 11.1 volt 2100 mAh battery.

I tried hooking up to the PC and it won't allow upgrading the version. The unit does not light up at all.

I also tried the full spektrum receiver. Nothing, dead as a doornail.

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01-27-2013 12:24 AM  4 years agoPost 28
jschenck

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La Vista, NE.

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I'm powering the 3GX with a 3s 11.1 volt 2100 mAh battery
That is way above max voltage. Should not go above 8.4V

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01-27-2013 01:18 AM  4 years agoPost 29
jimmyG

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Wisconsin

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but it runs through the ESC

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01-27-2013 01:40 AM  4 years agoPost 30
dkshema

rrMaster

Cedar Rapids, IA

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TRex 450. 3GX system. DX8 transmitter.

OK,

I'll try to short-circuit the process.

You are using a 3S LiPo to supply power, I assume this is the 3S LiPo that makes your 450 go.

That would mean the 3GX is being powered through the throttle to ESC cable, using the internal BEC of the ESC that would be normally used to power the radio. So you're probably supplying somewhere around 5V to the 3GX through your ESC.

The ESC is most likely the one that ships with the Align 450 system, their quite reliable 35 amp baby.

When you plug the ESC cable into the 3GX controller, the cable will go into the first vertical connector on the left side of the connector block, and the WHITE wire of that connector goes UP -- toward the top of the 3GX unit. If it's the other way 'round, you won't kill anything, but you won't supply power to anything, either.

Next question, then, is, are you sure the ESC's BEC is functional? Have you measured the voltage between the RED wire (+v), and the BLACK wire (ground)?

If you bypass the 3GX system and plug the ESC cable into a standard receiver, does the receiver work?

Perhaps you can post a few good clear pictures of the 3GX and the rest of the wiring in your bird.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-27-2013 01:53 AM  4 years agoPost 31
jimmyG

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Wisconsin

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Thanks Dave, you gave me two more things to try. Yes the ESC is stock. And the unit is connected properly. I will post pictures after I perform the tests below.

I will try to bypass the 3GX with a receiver and test the voltage from the power wire from the ESC

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01-27-2013 04:02 PM  4 years agoPost 32
jimmyG

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Wisconsin

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I tried bypassing the 3GX by plugging the servos directly into a RX and it worked fine. This tells me the ESC is working properly.

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01-27-2013 04:29 PM  4 years agoPost 33
ShuRugal

rrKey Veteran

Killeen, TX

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One thing i just though of: I believe the 3GX requires the use of digital servos and may even be picky about what framerate they are. I don't recall at the moment whether you said yours are digital or not, but it seemed worth mentioning.

AMA 700159

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01-27-2013 06:22 PM  4 years agoPost 34
jimmyG

rrNovice

Wisconsin

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You guys won't believe this.

I had taken all wires out of the 3Gx, including the sat RX to bypass using a regular RX. The servos operated fine.

Jeff Fassbinder answered an email that I should take pictures of the 3GX and ESC and send to Align. and that I will probably need to send the unit in for repair.

I thought I should try one more time before sending it in. I reconnected all of the wires, connected the bat and the 3GX lit up. All of the servo movemens were screwy so I re-bound the system. Everything appears fine.

What the heck?? I will continue on tweaking the setup.

thanks for all the input

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01-27-2013 06:52 PM  4 years agoPost 35
Stephen Born

rrElite Veteran

USA

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I thought I should try one more time before sending it in. I reconnected all of the wires, connected the bat and the 3GX lit up. All of the servo movemens were screwy so I re-bound the system. Everything appears fine.
Sometimes it's best to begin at ground zero, taking everything apart and starting over. Below is a post I made on the 25th to start over. Glad you got it working.
Start completely over with the set-up, as you did when you first took it out of the box. Make sure all wires are tight and everything is looked over.

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01-27-2013 07:01 PM  4 years agoPost 36
dkshema

rrMaster

Cedar Rapids, IA

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I've run a 3GX extensively while troubleshooting reported problems with the 3GX, satellites, and converted JR transmitters using the DM9 AirModule. During that troubleshooting, I used four JR NES-537 analog servos, and cheap JR ST-47 servo, and an old Futaba S9202 all plugged in.

Nothing caught fire, nothing burnt to a crisp, and nothing failed. I doubt his servos are the problem here. I wouldn't recommend this kind of setup in anything that flies, but as a reference point, is worth mentioning. If you have a digital servo connected that accepts a 1520 usec wide neutral pulse, the thing will work.

-----

Based on the tests JimmyG's been running, it is apparent that his 3GX really is DOA. If he can get AlignRC involved, great. If he can get the place from where he got the system to help, great. If not, I'd be at least willing to take a look at it myself, no promises however to being able to resurrect it.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-27-2013 07:07 PM  4 years agoPost 37
dkshema

rrMaster

Cedar Rapids, IA

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Just saw the most recent status after I hit send.

Interesting that all is now right with the world. It's also reassuring that AlignRC and Jeff responded. They are doing what they can to support the product, a very good sign.

Those pictures would have been interesting to see, too. Remember that the 3GX won't light up unless it sees good info from a receiver. You may have had a problem with the Satellite or its 3-wire cable. Make sure that is a solid connection and reliable.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-27-2013 07:07 PM  4 years agoPost 38
Stephen Born

rrElite Veteran

USA

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Here is a similar situation with the 3GX.

https://rc.runryder.com/helicopter/t712529p1/

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01-27-2013 07:10 PM  4 years agoPost 39
jimmyG

rrNovice

Wisconsin

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You were right Aerial. I had removed all wires from the 3GX EXCEPT the sat RX go figure.

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01-27-2013 07:23 PM  4 years agoPost 40
dkshema

rrMaster

Cedar Rapids, IA

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I had removed all wires from the 3GX EXCEPT the sat RX
Make certain the cable and its connections are sound. A little gentle wiggling and tugging can go a long way to protecting your investment. Never pull the plug by pulling on the wire. Find a way to get hold of the connector plug body itself, and pull on that.

If all is well, leave a small amount of slack in the wire and connector then fix the cable to the airframe about an inch or inch and a half from the connector so that it can't just flop around. I use a dab of Goop, Silicon RTV, or small patch of gray 3M double-sided exterior mounting tape. Do this to both ends.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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HelicopterMain Discussion › 3GX Not Booting Up
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