My PS3 keeps losing its

Question

My PS3 keeps losing its signal between console and controller (it normally takes about 30mins) but either way it loses the signal and the only way to sort it out is to turn the PS3 off at the socket and restart it. The same happend with my Sony blue tooth remote controller - it works fine at first but half way through a movie the controller stops working completely. Again the only way to rectify the problem is to restart the PS3. I have tried everything but formatting and restarting the system (I do not want to lose my game data). I am beginning to think that the PS3 is broken as the controllers both show full charge even when they have lost the connection... If I have to take it back is there any way to save the game data???