Have had tv for about 3 years all of a sudden the sound went out came bace 2 or 3 times and is now gone anything i can do?

There is a good chance of a bad panel causing the blue.

Could be main AV board not receiving the proper voltage due to a failing capacitor or power transistor. So I suspect a PSU failure.

Cannot offer solution but my mine has also gone bad.  At first a black shadow appeared on the left side of the screen.  Took it to the authorized service center.  they kept it a few days, said nothing could be done.  Used it anyway for the next 5 years when suddenly it went black (or sometimes blue) after working perfectly for the first 5 minutes. A sharp rap next to the right speaker fixed it a few times, but no more.  Good luck. 

Bill

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Check to make sure its not muted, if not then your main board most likely has failed

It may be a ballast for the lamp gone bad, but have a professional check it because it coul be one of the boards.

bad lamp, yes it will not have no sound, 

You need to look in your owners manual for the telephone number and order a new bulb. It should cost about $200, but they will ship it overnight and minimize your downtime.

I've replaced 2 in my WD-52525 in the last 3 years, the first one went like yours did, very suddenly, with an audible POP!! The second one was preceded by an orange warning light, which the book says is a warning that the bulb has about 20 hours left on it.

To replace the bulb, UNPLUG THE TV, remove the left speaker screen, with a philips screw driver unscrew the bulb, pull it out by the handle, then replace it with the same type, in reverse order. This is a very easy replacement that does NOT need to be done by a service technician to complete.

Same problem...not solutions so far from what i can see. just a popping type sound...picture GONE...sound still there....had it for 2 years and 3 months....warrenty was for 2 years...eh hem...it figures.

I also had this problem with the sound suddenly going out. After spending hours determining that it was not caused by my cable box, and unlocking volume codes and such, I took someone else's advice and hooked up a cheap surround sound speaker system through the audio ports on the back. Now I have sound for my tv, and it even sounds better than when the tv sound was working.

as you say that color came back for 15 minutes then went off. this is a clear indication that there is a loose contact or pcb crack somewhere in color section only. if that happens to be ok then check 1 antena or cable socket loose 2 loose connector in color section 3 print open or crack near chroma signal processor. 4 loose near color control. 5 chroma ic night be defective. if you are not tech person take the help of tech.person.