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Look for blown capacitors on the power supply board. They will have domed tops instead of flat tops Some will look puffy too. You can get a repair kit if you're handy with a soldering iron or replace the entire board from here: TV Parts Universal TV Stands DLP Chips ShopJimmy
You can't upgrade a panel tv, plasma or LCD.You may have had a plasma panel failure,I sell LG tv's and for the panel to go bad is rare but I have had it happen approx.6 times in the past 5 years.I highly recommend contacting LG"s customer service they will stand behind the panel and get you going again.Good luck!
Hi there, Im Kanth, i had the same problem, and i found a person in Mississauga, they fix all kind of problems in Plasma, they fixed my LG before a 7 months, its still running good, i came to know lots of ppls were having same problems, i sujest u to being the plasma to electronics @ Dixie and Britannia Mississauga, call them now 905 565 6595 or check there wesite for more info. http://dukeelectronic.com
Usually when customer reports they heara loud crack and now unit won't power up what we bad is commonly the Y SUSTAIN and LOWER Y DRIVER CBA. hOPEFULLY YOUR UNIT IS UNDER FACTIRY WARRANTY. anyway it goes this is a shop job.
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