ATR 42 / 72 hydraulic press. and some electricals go out after landing when engine IDLE

Do you have the same issue if you follow the OP’s steps to reproduce it?

YES

Provide extra information to complete the original description of the issue:

Not only when landing, when engines are on and providing electrical power when on idle it seems electrical and hydraulically systems go out. Just like experienced by other pilots above my post

If relevant, provide additional screenshots/video: