I was watching TV last night when it started making a high pitched buzzing noise and the screen began to flicker and darken. I have a Vizio VO47LFHDTV10A. Power cycling and unplugging did nothing. I decided to take it apart and see if I could figure out what the problem was despite knowing very little regarding TVs. I found the part that was making the noise. There is one of these boards on each side of the TV. The part number listed on it is 6632L-0392A KUBNKM133A Rev 1.0; it is an LG part. By searching I find that it is a Backlight inverter Master.
Removing the power from this board stops the noise, but also prevents the display from lighting at all. So I thought, this must be the problem. I decided to unplug the opposing side, while leaving the left side plugged in. This also stopped the noise, but this time the display lit up and displayed the picture, but only was backlit only on the side that was still plugged in.
My question is...am I right in assuming that this left side board is going out? Could I just replace this piece and have my TV back in working condition? Let me know if there is anything I need to elaborate on. I have taken pictures and am able to supply them if it would be helpful.
Thanks in advance for any help anyone is able to give me!