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Old May 22, 2012, 01:15 PM
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Joined Mar 2012
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Walkera Mini CP tail motor not going

So I've got a mini CP that I'm learning to fly and starting to get pretty descent with.

Unfortunately I had a little incident Sunday where a bad landing broke my tail boom. I managed to fix it w/o issues (had a spare) but now the tail motor isn't powering up when plugged back into the board.

I initially thought it may be a motor or soldering issue. I checked them.
I then plugged the tail motor into the main motor plug and the tail motor appears to be spinning without issues.

I'm not thinking about the board itself (which sux). There are no apparent damage on it and haven't been flown very much to be honest (I usually fly over grassy area as well so hard landing don't happen very often). I checked the voltages on the tail motor posts but I'm not getting anything (even when moving in either directions).
I checked my TX to make sure that I didn't have something disabled but again couldn't find anything.

I'm not sure what else to try or if I just need to suck it up and will have to replace the board.
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Old May 22, 2012, 01:29 PM
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United States, TN, Memphis
Joined Dec 2011
862 Posts
Sounds like you shorted the wires upon reassembly and the tail fet might be dead. I've read Walkera will fix them free of charge as long as you pay shipping both ways. If not I could do it for a few bucks.
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Old May 22, 2012, 08:18 PM
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Joined May 2012
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Well it is looking like you have shorted the board although you could try taking the tail off the heli completely and plugging it in to the board to make sure its not shorting out or plug a spare tail motor onto the board.

Hope you fix it soon!
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Old May 22, 2012, 09:44 PM
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I can't imagine how it would have shorted out since I really only soldered it back and plugged it in.
Plugging the tail motor into the main motor seems to work just fine so I can't imagine a short on the wires as they haven't moved otherwise.

What's exactly involved in fixing it? What part(s) does need to be replaced and where would I get them?

Thanks again for the replies!
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Old May 22, 2012, 10:02 PM
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http://www.helifreak.com/showthread.php?t=413725
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