Bad power supply would be the first guess.
You could try
www.shopjimmy.com
They sell replacement boards and are very helpful. If you don't feed up to trying to replace a board a new TV is in your future.
Bad power supply would be the first guess.
You could try
www.shopjimmy.com
They sell replacement boards and are very helpful. If you don't feed up to trying to replace a board a new TV is in your future.