Syma x8hg motors stuck full throttle

[Flight Time]

Hello ,

I purchased my Syma x8hg (non FPV) in 2016.

I love this quadcopter. Very stable and good performance for the price.

But recently I had to replace the main board due to the camera shorting it out. I now use an external self powered WIFI camera.

After I installed the new main board I am able to bind the drone to the TX but the motors immediately go full throttle.

When I go down on the left stick and let go the motors still go back to full throttle.

I am not able to trim the throttle down.

I have tried the recalibration and reset the transmitter but still same problem.

Your suggestions would be greatly appreciated.

I would like to get this bird back in the sky rather than purchase another unit.

Thanks in advance for any input

 

[Jackson]

Sounds like a motor polarity problem.

 

[Flight Time]

Thanks Jackson.... I was throwing in the towel on this one... I'll open her up again and check motor polarity and provide update.

 

[Jackson]

I have a quad that I can connect the battery the wrong away (don't ask). That's pretty much what it did.

 

[Flight Time]

Hopefully that's the cause. I'll open it up tonight when I get home and let u know. Thanks again

 

[Flight Time]

well i finally opened it back up and was able to confirm that I soldered the positive and negative motors wires correctly to the main board. so I ended up buying another main board
since it was only $12 and installing it again to make sure. I got better motor response and motors no longer go full throttle. however when I put the props on for a test flight it would not lift off. I realized that all 4 blades are spinning in the wrong direction??? Any ideas how to remedy this issue?
Thanks