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Old Dec 17, 2011, 01:51 PM
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blinking board lite on dh 9101

Hi to all. I am new to rc flying although i have wanted to since i was a kid. I was given a Double Horse 9101 as a gift. Due to the weather and daylight i have been testing in the house. I took it outside yesterday and while i was able to get in the air and make turns, it did not want to go forward. After about 5 minutes it got a little too far away so i set it down. I tried to take off again and when I pushed the lever the blades would start to turn and then stop. I could see the board lite flashing so i figured the battery was dead. I charged it up and tried again today with the same results. I have checked the batteries in the controller and they test fine. Any ideas.
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Last edited by npd136; Dec 17, 2011 at 05:03 PM.
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Old Dec 18, 2011, 10:33 AM
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I replaced the batteries in the controller with Enegizer Lithium thinking the batteries were bad but no change. I switch on the controller first, then the copter. The red board light flashes once and then stays solid red. I push the throttle lever forward and the blades start and then quit and the board light is flashing. As soon as I pull the throttle lever back the board light goes solid red again. Do I need an new battery in the copter or what? Thanks in advance.
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Old Dec 18, 2011, 10:40 AM
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morris alabama
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Center the trims before turning anything on.
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Old Dec 18, 2011, 10:49 AM
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I centered all the trim dials with the same result.
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Old Dec 18, 2011, 10:54 AM
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Have you set the throttle all the way down before turning on the Tx? The other stick must be centered.
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Old Dec 18, 2011, 10:58 AM
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Yes, I centered the right stick and pulled the throttle stick to the lower stop.
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Old Dec 18, 2011, 10:59 PM
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I know you said that you charged your helicopter, but everything you said sounds like a battery problem to me. If you have a voltmeter, it's best to check the battery of your helicopter. Perhaps it is a dud and it's not holding charge or the internal resistance has become too high. Your fully charged battery should read about 4.2v. Otherwise, you have a bad battery and a replacement is in order.

Edit: Should say 8.4v for a 2s Lipo. Thanks, DoubleTap.
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Old Dec 19, 2011, 12:03 AM
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Quote:
Originally Posted by Heli Pad View Post
I know you said that you charged your helicopter, but everything you said sounds like a battery problem to me. If you have a voltmeter, it's best to check the battery of your helicopter. Perhaps it is a dud and it's not holding charge or the internal resistance has become too high. Your fully charged battery should read about 4.2v. Otherwise, you have a bad battery and a replacement is in order.
Actually, his battery should read 8.4V when fully charged, because Double Horse 9101 uses a 2S lipo, not a single cell like smaller toy helis.
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Old Dec 19, 2011, 06:24 PM
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The reading with the meter set on 20 is 1320, which I would assume to be 13.2 v, which would explain why it is shutting down.
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Old Dec 19, 2011, 08:02 PM
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Just ordered a new battery from Xenonproject.com. Best price and lowest shipping I could find. I hope this fixes it.
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Old Dec 19, 2011, 10:32 PM
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Safe disposal of damaged Lipo batteries

FYI, here is the safe way to dispose of old or damaged Lipo battery packs.


http://www.rccoh.com/rc.how-to/lipo.....disposal.html
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Old Dec 20, 2011, 05:16 PM
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I have seen other helis with the same results. i also have seen the blinking board. I decided to get new motors for the SYMA S032G. I'm still waiting for them in the mail. one of the motors that i took out of it had an intermittent bind in it. i will let you know if its the motors.
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Old Dec 20, 2011, 06:07 PM
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I finally sent an email to the manufacturer. Below is the reply.
Hi Sir.
I think the problem would be the screws that fix the inner shaft, you can try to tighten the screws first.
if it does not work again, so the problem would be the circuit boad, it can not receive the signals from the controller.
I hope this can help you.
Thanks


Best regards
Andrew
http://www.shuang-ma.com

I will post the results of the new battery install. If that does not fix it a new board will be ordered the same day.
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Old Dec 20, 2011, 06:18 PM
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what a load of tripe! The loose screws on the inner or the outer shaft will not allow the heli to fly but it will not make the led light flash! true it could be the circuit board or the battery. i would like to hear more.
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Old Dec 20, 2011, 06:38 PM
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morris alabama
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The red light on the board will blink if the heli is turned on and not the transmitter. Could be either the trans or receiver but I dont know how to find out which one.
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