I first started with a red screen I changed the power supply because the caps were bulging. I next changed the upper and lower buffer board which the tv worked for about an 1 1/2 hour then the y sus board started to click and I changed the ipms on the board I put in two sanyo ipms put the board in and the tv works. Now I am getting when the tv sits for about 12 hours i can turn on the tv and I will get a picture but no sound i can turn up the volume and nothing. But when I go into the menu under audio and flip the check mark from front speaker on to off and then back to on again the sound comes back on to the front speakers I can shut the tv off and come back 4 hours later and the sound will be there but after 12 or more hours not. I am asking what could be wrong or doing this I greatly appreciate the help. Thank you Ron