What is broken in the control panel?

Question

Electronics

In general, I have a radio-controlled helicopter, and the problem lies in the control panel. When the toy was purchased, everything worked fine, but then the helicopter was not used for a very long time and lay with the remote control (WITHOUT BATTERIES) in its own box, in a dry place. And after 4 years I got it, bought new batteries for the remote control, but it does not work correctly. The lights flash continuously, and the helicopter (everything seems to be in order with it) does not react in any way to the deviation of the levers. And now I have a question, what can it be, how best to check and where to start? Will I be able to do it on my own with practically no experience (unless, of course, this is something super complicated)? I have a multimeter and I know how to use a soldering iron, solder and rosin a little. There seem to be no swollen barrels, there is a white coating on a small board.
Links to photos (Habr for some reason cannot attach these photos...):

https://ibb.co/ZX27CJ7
https://ibb.co/YhDM6yy
https://ibb.co/F0TzXFh
https://ibb.co/9ZLdB8v
https://ibb.co/PwtQFqt
https://ibb.co/M1LGZhX

Answer 1

chip is faulty

Answer 2

Cheap Chinese shit. What is the remote control, what is the camera with which it was filmed.
For 11 years, anything could happen there, soldering could rot, wires rot, variable resistors die, firmware in the processor flies, capacitors dry out.
Once the lights are flashing, it means not a complete corpse.
The place next to the two blue wires looks suspicious, but it was filmed so obscenely that nothing can be seen.
Plus, it would be nice to describe what role the light bulbs play, is it an indication of some modes or what?