hi i have a samsung lcd tv , it keeps saying no signal for the past day , ive had it for 4 years and this is the 1st time it has done this , it went off at 5:30pm yesterday saying no signal then it came back on at 9am this morning , untill 5:30pm today exactly the same with a level 10 bit error and a signal strength of zero . the model number is LE32R74BD (R) please help

craig, August 2012