My 42 inch Vizio HD LCD Tv is flickering and when you get upclose it sounds like a muted helicopter
Model: 720 HD LCD
Can you please get me the model number off the back of the TV?
How long have you had the set for, and when did the problem occur?
Additionally, what is connected to the TV for devices (DVD, cable box, etc.), and do you have the same issue regardless of which you're trying to watch?
Also, if you press the MENU button on the TV remote (not the cable box remote), does the MENU come up clearly, or is it also flickering?
Model # Vizio VW42L HDTV10A
We got in May of 08 at Wal-Mart
We have Direct TV, Wii, and DVD player
Happens on all devices as if it is independent from device
Can see menu but its still flickering
What color is the Vizio power light during this?
Also, do you hear any clicking sonds, buzz or hum coming from the set?
Power light is silver and I hear a sound like a muted helicopter when I am upclose
Does it sound similar to a turn signal relay clicking or no?
Unfortunately, these symptoms indicate that either the power supply output rail that feeds the backlight inverter boards (there is a slave and a master), is failing/oscillating, or the backlight inverters themselves are failing. Voltages need to be measured at the power supply outputs both under no load, and under load to determine if the power supply is fully functional. If so, then the backlight inverters will need to be replaced. Average cost for this type of repair is around $400 parts and labor. There are no buttons you can press or resets you can perform to fix this problem and it will require component testing and replacement in order to operate normally once again.
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10 years installing and repairing TV's and AV