TView headrest dvd player

hi hallow then their is a problem in passing power supply or receiving power supply r some where the connection may lost which unknown to u so please refer it once again and see the battery connected perfectly are not. u explained u r problem very well but such problem can solve by cheaking the instrument practicaly so if still u r problem is not solved its better to consult the expert near to u directly

Make sure the 12v power source you are connected to is constantly hot. Then check to make sure your ground is in a good location. You can check this by putting the ground wire over various parts of metal until you get a spark. Then connect the ground in that location. If you have a good power supply, and the buttons on the unit still do not power it up, I would get them replaced or repaired. PS- also check the fuses the units came with. Those might be blown as well.