TS4N nitro electrical issues
 

New on here .... Got a thunder tiger road car...... I bought a new receiver (flipped car standard One broke) all work well for a week or so now I turn on the power to the receiver and turn on transmitter it makes a quiet buzzing noise and both servos respond and work for about 10 seconds then stops responding and buzzing noise stops, both servos no longer respond and I have to turn off power switch on car for a while to makeit work for another ten seconds or so..... When the servos stop responding if I flick the power switch to reciever they do twitch when turned on but nothing more..... Any ideas or help appreciated thanks !