Hello all. Just the other day I picked up this tv from a homeowner I work for in trade for a few hours. Now a few months ago, they called and said they were having trouble, it said no signal. So I went up, checked the input, and then switched the hdmi to a different port and it worked. A month later same problem, same solution. Now that was the last port and it stopped working a few weeks ago. I assumed this was a problem with the main board. So a few weeks later I installed a new tv for them and brought this one home. Honestly I was just gonna use it as is and replace my ancient hdtv which didn't have hdmi, so I didn't really need it for my devices. So I turned it on and it started to load up and just froze. And then I heard a noise, kind of a screech, similar to an oscillator sound older tvs had, but a little different. I know some of you may not know that sound as not all people can hear the oscillators. It wasn't very loud, and then the tv turned off.
Since then I have searched and searched and luckily found this place. Found info in some other threads, and tried powercycles, with various different unplugged time just to see if it made a difference. Also tried holding the input and a few other things. The weird part is it will start up a little differently every time. I've cycled it probably 15 times and it only made that noise above maybe 3 times. Once I even got all the way to a choose store mode or home mode screen. That was the only time the power button actually shut it off, but it wouldn't let me choose a mode. It just seems like it is freezing during the "boot" process (I don't know if that's what it is or is called on these tvs). I'm just not sure if this is a main board problem. It seems as though it would be to me, but this is the first time I've worked on a smart or led or hdtv.
I read a thread on here about power up issues on another vizio model. It ended up being a firmware problem in most cases and most of the people ended up getting it fixed by Vizio, even out of warranty. Well I contacted them and I wasn't so lucky. I just hope I'm on the right track here, I don't wanna spend to much money fixing this thing.
Since then I have searched and searched and luckily found this place. Found info in some other threads, and tried powercycles, with various different unplugged time just to see if it made a difference. Also tried holding the input and a few other things. The weird part is it will start up a little differently every time. I've cycled it probably 15 times and it only made that noise above maybe 3 times. Once I even got all the way to a choose store mode or home mode screen. That was the only time the power button actually shut it off, but it wouldn't let me choose a mode. It just seems like it is freezing during the "boot" process (I don't know if that's what it is or is called on these tvs). I'm just not sure if this is a main board problem. It seems as though it would be to me, but this is the first time I've worked on a smart or led or hdtv.
I read a thread on here about power up issues on another vizio model. It ended up being a firmware problem in most cases and most of the people ended up getting it fixed by Vizio, even out of warranty. Well I contacted them and I wasn't so lucky. I just hope I'm on the right track here, I don't wanna spend to much money fixing this thing.
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