PHILIPS TV CHASSIS A02E Suddenly Restarts

[REHAD]

I have a Philips TV 29PT8509 . It suddenly restarts . It looks like a malfunctioning protection . I suspected from the EHT-INFO voltage level because on the datasheets it says that this signal is 6V but when i measure it , i see around 10Volts on the multimeter. As a temporary solution i have lowered the brightness and contrast now i can watch the TV a little bit darker but no restarts. What should i do ? Thank You for Your Help ...

[RehaD]

It is definitely not EHT-INFO protection

[REHAD]

Now i can see that TV set goes in protection in some specific channels ( the ones which has very powerfull signal level ) . I have tried the other channels , after hours there is no restart . May be the TV set is ok but input signal level too high