Takuma v1 E-Foil

ESC light comes on then immediately goes out.Remote cannot pair with remote hand controller. Has anyone had this fault and how to rectify it.
I fortunately have a mate with same model so will try using his ESC to see if this rectifies problem.
Speaker in mast constantly chirps bo du lay(repeats constantly)
Remote when switched on shows no info about board battery status.

I had the same problem 3 times /2x Takuma cruiser, 1x carver2/. ESC had to be replaced. Luckily on warranty.
“Chinese quality”.