My rca flatscreen turned off suddenly. now it turns on (the light goes on) but nothing happens.

Hello,


You need to check the output voltages of the power supply to see which one goes off. It may be due to short circuits some where, if otherwise,
Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
I hope this will help in solving the problem...