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100 Class Electric Helicopters 100 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar. |
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04-24-2014, 04:42 AM | #1 (permalink) |
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MRS no beeping ors servos
Hi,
I had a bad crash and broke a servo gear. All seemed ok apart from the broke servo so i fixed it and rebuilt. When I power up there is no beeping from the ESC/motor and no servo movement once the receiver connects, This is strange because the ESC seems to provide power to the receiver/gyro which initialises with two green lights but does not provide power to the motors or servos. Has anybody had this problem and resolved? Sent from my ASUS Transformer Pad TF300T using Tapatalk |
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04-24-2014, 08:30 AM | #2 (permalink) |
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Join Date: Jun 2012
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Check for broken wires. They usually break in the soldering near the plug. Also check for broken insulation(less likely) on these wires they've short on mine.
Also check the wires near the tail motor. These have all happened to mine. The main battery wires broke too but the symptom was different, the mrs was binding normally then the red lights would come on then binding again and so on. I have to say that mine has almost 600 flights on it so some wear and tear is normal. As long as it's easily reparable.
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T-Rex 150 || Blade 180 CFX with µBrain || T-rex 250 pro DFC with Vortex Vx1p || T-Rex 450 PRO DFC || Mcpx BL || Mcpx v2 || Futaba 14SG (KDH-Modul) || DX8 |
04-24-2014, 08:58 AM | #3 (permalink) |
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Join Date: Jan 2010
Location: Maple Valley, WA
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Try unplugging both motors and all the servos. Then plug in one servo and see if it works. If not unplug that one and try another. Maybe a servo is bringing down the voltage output from the MRS.
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04-26-2014, 10:28 AM | #4 (permalink) |
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Join Date: Dec 2005
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Sounds like your board has given up. had mine go bad as well. did the unit come off the heli in the crash? if so check the bottom of the board for anything missing.
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04-26-2014, 07:35 PM | #5 (permalink) |
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Thread Starter
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Hi. It was working after the crash. Then I fixed the servos and it no longer worked when I reassembled
Disconnected motors and servos and put back one at a time but nothing works. I just can't justify $100 at the moment so it will sit in the bench and I will continue with my mcpx. Sent from my Nexus 5 using Tapatalk |
05-04-2014, 11:57 AM | #6 (permalink) |
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Join Date: Mar 2013
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Try to put a light squueze down on the top of the unit while it's trying to initialize. I had one go bad after one flight mid air and align replaced it for free.
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Goblin 280 |
05-23-2014, 07:46 AM | #7 (permalink) |
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Align Australia (Wattsuprc.com.au) have agreed to replace MRS but have no stock in Australia at the moment. Have to wait
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05-27-2014, 11:19 AM | #8 (permalink) |
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Ian -- I don't know if you ever resolved this, but mine just did exactly the same thing. After a crash due to servo failure, the motor stopped beeping. Both lights on MRS green, and rx solid. No motor or servo control.
What I found was that one of the posts that hold the 2 bottom boards together had come loose, and taken a trace with it. Quick fix with a soldering iron was all it took for me. |
05-27-2014, 03:21 PM | #9 (permalink) | |
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Re: MRS no beeping ors servos
Quote:
Sent from my Nexus 5 using Tapatalk |
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05-31-2014, 04:51 PM | #10 (permalink) | |
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Thread Starter
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Re: MRS no beeping ors servos
Quote:
Still waiting for a replacement. Sent from my Nexus 5 using Tapatalk |
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06-01-2014, 03:09 AM | #11 (permalink) | |
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Join Date: Sep 2011
Location: Dallas
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MRS Post Failure
Quote:
Own two 150s Both or my MRS corner tracks had lifted because the post had pushed through.Soldering is difficult if not impossible work. Handle MRS on sides only.
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