I'm not sure this is the spot to post a repair question but here goes.   I have a Samsung LNT4065FX tv.  It is about 7 yrs old.    I am trying to troubleshoot and narrow the problem down.  The caps were replaced about two yrs ago through Samsung . The tv worked fine after the caps were...

My Samsung LNt4065f has popping sounds coming from both speakers. Muting the tv stops this, popping gets louder and softer as volume is adjusted. The problem is present using all AV inputs. The popping is irregular in frequency. Any thoughts about the source?