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Old 07-23-2020, 07:37 AM   #1
Quarry Creeper
 
Join Date: Apr 2008
Location: San Diego
Posts: 268
Default Mamba X 3800 issue

I have a trx4 that I installed a Mamba X 3800 “Crawler Edition” combo.

It’s been ran 3-4 times and worked excellent. No problems at all. Today I went to program it with the B-Link and it gives me 2short beeps and one long beep. It not hot since it hasn’t been ran in a few days and my condo is kept pretty cool.

I’ve tried using b-link to reset programming and are sure the thermo shut down is off (default setting).

What am I doing wrong here?
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Old 07-23-2020, 08:02 AM   #2
I wanna be Dave
 
Join Date: Jan 2005
Location: Raleigh-ish vicinity
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Default Re: Mamba X 3800 issue

2 short beeps followed by a long beep (along with all ESC lights flashing) indicates the ESC is not getting a radio signal from the receiver.

Double check the ESC is plugged into the receiver correctly and the receiver is getting power. Even the most experienced among us is not above plugging in a receiver plug the wrong way from time to time.
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Old 07-23-2020, 08:08 AM   #3
Quarry Creeper
 
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Location: San Diego
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Default Re: Mamba X 3800 issue

Quote:
Originally Posted by svt923 View Post
2 short beeps followed by a long beep (along with all ESC lights flashing) indicates the ESC is not getting a radio signal from the receiver.

Double check the ESC is plugged into the receiver correctly and the receiver is getting power. Even the most experienced among us is not above plugging in a receiver plug the wrong way from time to time.
I just got to work so I’ll try that when I get home. I’ve unplugged and plugged it in multiple times.

I can steer and use all the micro servos no problem. Only throttle is disabled.
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Old 07-23-2020, 08:39 AM   #4
I wanna be Dave
 
Join Date: Jun 2016
Location: Deep in the Everglades
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Default Mamba X 3800 issue

If plugged correctly, recalibrate Tx and Rx

On Castle ESC’s the LEDs tell you what wrong.
Here’s old reliable!

https://rogershobbycenter.com/castle...eshootingguide

Hang up and Drive
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Old 07-23-2020, 09:39 AM   #5
Quarry Creeper
 
Join Date: Apr 2008
Location: San Diego
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Default Re: Mamba X 3800 issue

Also I’m an idiot and read the guide as - - • being short short long instead of long long short.

You guys are probably right and I didn’t plug something in correctly.

Hoping I can get it going when I get home.

Thanks for the quick responses. I’ll update tonight.
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Old 07-24-2020, 07:43 AM   #6
Quarry Creeper
 
Join Date: Apr 2008
Location: San Diego
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Default Re: Mamba X 3800 issue

Ended up being the receiver. Pulled the traxxas receiver and put in a futuba system I had and it works perfectly fine.
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