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Can u do basic soldering?Have tools like a soldering iron,desoldering pump,solder?This cause is the convergence board problems too.Tries websites like a Tvrepairworld.com,Tvrepairkits.com to buy a covergengece kit to trepair it ur self.The shop,will cost u $300-350 for parts and labors.
the tv has one part of the power supply working this is needed to have the microcontroller ready to work. But the tv needs more than that for work im talking 'bout the high voltage power supply who is now damaged. the parts required depends on the diagnosis in the bench but at least two are needed. the cost of this repair of course depends in how many parts are going to be replaced, but i concider this repair kind of average in this technology.
The beeping sound is the power supply trying to start up. That means there is a short somewhere inside the set. On these TV sets most of the time this trouble is in the horizontal sweep circuit. Sorry but the only way to reset a TV set like this is to unplug it for several hours. But in this case I doubt very much it will work. If you have no solid state repair experience then please call in a certified tech to assist you in this repair. Let me know how you made out. Good Luck