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Hi, I have similar problem with my LS-208 heli. Helicopter leds are blinking red/green, front white led is on, and tail leds are blinking too. Remote controller red led is on as should be but helicopter doesn't respond to controller at all. I followed instructions above with no success. Anyone has a suggestion? Regards, Yaron.
Check the charger adaptor if it has any output power. If no power comes out replace the adaptor.
Check also the battery terminal, it might already corrode and needs clean up.
If all does not work, the battery in the helicopter is already malfunctioning.
Normal start-up would be: Turn helicopter on. Flashing light in nose should come on, as well as another blinking light (sometimes towards the rear, sometimes in the "cockpit" area) the helicopter MUST then be placed on a level stable surface until the 'other' light stops blinking, usually a couple/few seconds. This is the gyroscopes synching up and determining the "level" head orientation they will be maintaining. Then power the controller on. Making sure you're not covering the front of the controller with your hands, (the IR signals come out the front like a TV remote) push the throttle control (left joystick) up until the blades move. This what the horribly translated instructions mean by setting the helicopter and controller together. Don't charge with the controller. It kills your controller's batteries, (which will last nearly forever if you don't use them as your heli's charger) and seems to make the birds act weird. Use the USB charger and a fully powered USB port (back of your desktop, not the front) and go by the light on the charger not an arbitrary time. Plug in charger NOT connected to heli. Look at the light. That is what the light will look like when unit is fully charged. Make sure heli is off. Plug into charger. Charge until light is fully on. If you unplug heli and the light gets brighter, it's not charged fully. A weak USB port (on a laptop or the front side data port on most desktops) may take several hours to achieve full charge. Always cool 10 mins after charging AND 10 mins after flying. Never drain fully, it will kill the Li/Po battery. Land and power off as soon as you can't maintain altitude. If it is really charged, and you turn it on and nothing happens... no lights nothing. Then it's defective/toast. Return for refund. These SYMA helis are awesome, and HANDS DOWN the best on the market... but they can be picky/tricky on how they are treated.
Batteries are available online (amazon and many others) and change easily with only small screwdriver. Overcharging is not the issue. Nearly impossible with PCB (overcharge prevention circuit) hard wired into battery AND in charger. Problem is likely UNDERcharging, overDIScharging, or improper battery care. Battery MUST be allowed to cool 10 minutes after flying. Charge until light on charger doesn't get any brighter when helicopter is unplugged... light comes on (dim at first) well before full charge. 10 minute cool-down after charge also a MUST. And, most important, when flying, as soon as you are unable to maintain altitude, land helicopter and power it off. Li/Po batteries should never be fully drained. Even one full discharge can cripple or ruin entirely your helicopter's battery.
0) Obviously, helicopter will operate best when fully charged... if
charging light gets brighter when unplugged from helicopter, then it's
not at full charge. Charge fully, then allow battery to cool for 10
minutes. Good batteries in remote also. 1) Power on helicopter. 2)
Place on level surface and let gyroscopes sync. There is a red light
inside the body (NOT the red/blue flasher in the nose) that will blink
when you turn helicopter on, and will keep blinking until craft is level
and stable for a few seconds, then will stop blinking. 3) Make sure left joystick is all the way down. 4) Power on remote. 5) Throttle up (left joystick) until blades move and then all the way back down. This should get you flying. Let me know.