[Elecraft] k2 power control fault

[luca]

Hi friends
today the K2 ATU behaved in crazy way. But that is another problem!
After 2 second tuning (always swr=5) , the k2 switched off.
I switched on again the radio but now the power control does not work.
In qrp mode it give 20 watts , in qro mode give 100 watts. no way to control the power output.
the power meter does not work. no dots in tx mode.
Please anyone could give some suggest to fix the problem.
thanks
luca