2 bunkers over grown with grass one is marked ground under repair the other is not ball is hit into the bunker without the sign how is that played?

I am not sure I understand the question in regards to the grass. If the first one is marked ground under repair you are entitled to relief, of one club length. The other one must be played as it lies, if this means the ball is in the bunker, you must not ground the club whether there sand or not.