Syma 107 circuit board - RC Groups
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Jan 28, 2013, 09:19 AM
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bret191's Avatar

Syma 107 circuit board

I have a few 107's and they have been great! Very tough..

I have done several mods on them. I installed a new battery. I soldered a plug on the circuit board and took the old battery off, that way I could just plug a fresh battery in and keep flying. Worked great for a long time. I messed the plug up so decided to solder a new plug on and when I got done the hilo would be wide open when I plugged the battery in. Nothing makes a difference, I tryed everything cycling the transmitter ect. ect.
I did another hilo and the same thing happened. the hilo is WOT all the time....
I have soldered a few different hilo's all they all work great, but I have two that don't. I was wondering if any one else has had this problem?
I haven't diagnosed the problem yet but I will. I think that I might of smoked the resistor next to the positive solder point or maybe zapped it with electrostatic?
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Jan 29, 2013, 03:26 AM
Against Helicopter Cruelty
Heli Pad's Avatar
Could you post close-up pictures of these two PCBs?

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