JVC tv model AV-F2983 keeps switching off

Question

Hi Could someone help me solve a problem I have with this TV it switches on then after a short while goes off, the light goes red and the other two lights start flashing. If I unplug the unit it sometimes will start working for a while before doing it again. If someone can tell me what to look for, or let me know where I can download a schematic diagram for this tv.Thanks