Ask S&V

TV Popping Sound

Scott Wilkinson  |  Jun 7, 2011

We bought a Sony XBR-52HX909 with full-array LED backlighting and local dimming, and we love it! But 30 seconds to a minute after turning it off, we hear a click/pop, almost like the sound you sometimes hear when turning off a fluorescent bulb. Is this typical of sets with full-array backlighting or most likely an internal issue?

John Diamantopoulos

I asked my Sony contact about this; here is his reply:

"In some of our Monolithic models (like the HX909) from 2010, we have heard reports of this noise. In our tests, we have not found it to be consistent, but one of our engineers has posited the theory that the glass exterior and plastic interior cool down at different rates after turning the set off. This may cause the housing to give off a pop or crackle sound. They assure me that it not coming from the LED lighting system."

If you have an A/V question, please send it to askscottwilkinson@gmail.com.

X