My new Vizio 42" LCD HDTV "crackles" every once and a while, especially when it is first turned on. Also, it seems to get louder and quieter depending on what is making the sound on the TV. Voices will seem quiet but when music comes on it is blaring loud. Any suggestions?
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Re: Vizio 42" LCD HDTV audio issues
First of all go into the audio menu settings and turn off the "surround" feature off and that should fix the voices/music differences. Does the craking sound appear while watching any sorce such as cable box,sat rcvr or DVD player? If not isolate it to that input and maybe that device is giving the problem.
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Dec 2, 2013 - Uploaded by ozzysslayer
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If your DVD player supports HDMI or OPTICAL / DIGITAL audio then I would take a look at swapping to those type of connection first. This would help eliminate bad cords / connectors / electrical interference from other sources
Your TV has two hdmi inputs and optical so you have a choice
there are several possibilities. first if the unit comes on and the
"VIZIO" light turns white, but no picture or sound, then the main
control board is most likely the issue. could be the LCD control
board(s) depending on model one or two. and ultimately could be the
power supply on the upper side....if the "VIZIO" light does NOT turn
white, the whole power supply unit is out. after that, would have to
scope the circuits to find out. Seems that the control board is the
most common and tends to happen on many different sizes. new board will
be around $350.00. Might get lucky and find a used one, but it MUST be
EXACT part or it wont work right. if you dont find one or want to sell
yours for parts, id be interested in the screen. can reach me at
email@example.com. thanks, keith
Try pressing the MTS button on your remote while on the channel that does not have audio and select stereo. Most likely this will be set to SAP (secondary audio programming) and there is no SAP programming on that show. This is not something that could be avoided. It was during the channel scan, it locked in the SAP audio broadcasts for some reason.