Tv popping sound when turned on

you must have a wire ( sound plug ) not connect properly ,
sometime those plug loose with time ,
when powered the make connection and those sound happen !

Take it out and get in there with a vacuum. There are fans that keep it cool and there is a color wheel that might be damaged. All those shards need to be removed

There is obviously something loose or not making good contact. Open and then remove and then tighten down ALL the connectors that come into the house for that TV and go through the cable box to the TV!

Bad caps in the SMPS.

I found that with my Westinghouse SK26H240S lcd tv. that when you turn down the blacklight feature you get a hum thru the audio. so I just turned the blacklight feature to the max and the problem went away, no more audio hum.

Please see http://www.fixya.com/support/t1011937-transformers. It sounds like your flyback transformer is not properly soldered down/is failing.

The power supply in this model was terrible about having bad capacitors. The bad capacitors in this unit will have the top of teh can bowed out and browned. A qualified technician should be able to repair or replace the power supply.

Could be a possible flyback. yes.. for a 27inch i would not think it would be worth it... 27 inch tvs are realativly cheap.. the lowest price to repair would be about 200 if you got lucky.

I think i have the same problem, but i can get audio still. did the poping plinking sound come from the inside back panel of your TV? it sounded almost like a arc wielding noise?

could be that the main b+ filter Capacitor went bad and blew up. Also could have been the horizontal output transistor shorted and the flyback poped. In eather case it would be recommended that you take this set into a repair shop unless your familar with HV circuits in tv sets. Good Luck