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HGi:
This model is nortorious for Y-sustain board failure, replace the Y-sustain board and you should be good to go. The Y-sustain board is the one while standing with back off the set is the board on the left side of the television.
This tv problems u have are only can be causes by only two boards 90% lightly it is the tv power supply board.5% it could be the tv Tuner signal board.5% could be both boards are dead require changes both boards.The tv power supply board it is the board that where the tv power a/c cord plug into it.The tv Tuner signal board it is the board that where the incomming broadcasting signal cable wire plug into it.Tries websites like Shopjimmy.com,Ebay.com to by a whole refurbishes power supply board or tv Tuner signal board or both.
This DLP tv have a colors wheel.The tv colors wheel,it dead.Have loud humming sound,motor noises and pictures flashes black&white within a picture.The colors wheel is dead and is spinning off of it axis and hitting of it sides motor walls.Tv must require a replacement of a colors wheel.Hire a tv tech. to do the job.The tv colors wheel is hard to replace.The tv colors wheel sit behind many manchanical parts,must take out even before u even can replacement the colors wheel itself.
Try unplug,replug tv back an hour later.The tv now, is resetting back to factory setting.The tv should work now,not than the power supply board is dead.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Ur tv turn on now,hear alot of clicking?The tv LED light "lamp" on front panel flashes or light up?The tv projection lamp is dead.The Ballast board dead too,if hear alot of clicking?The ballast board help to ignite the projection lamp.
If you still haven't thrown the set away . . .
The ticking noise can come from different sources; either a relay that is tripping so the set doesn't burn your house down, or the horizontal output transistor is shorted shutting the set down, or there are failed components in the power supply.
I'm not sure which 'line transformer' you suspect but it isn't a likely place to look for this problem.
You should call for warranty service. If the set is very new try to get it exchanged.
There are some very heavy duty power supplies and many high power matrix drivers used in Plasma sets.
The description sounds like the noises are very loud. It is normal with any of these TV sets, if you put your ear right up to the back of the set at the vent holes you will hear some noises. These would be some acoustic harmonics from the power supplies and related circuits.
I am wondering if it is possible that there is something that is becoming less stable. If the set is working very well without any failure, so-far this is a very good sign. Before it gets to be a problem, I would have this checked.
On many models of these sets, they use fans for cooling specific areas. A bad fan can cause noise.
Question do you see green led or light when pressing power button? If you can also listen for a high pitch noise coming from back of set. This would be an indication that the set has powersuppy problem or high voltage problems. If the set is dead and no noise then maybe fuse or open circuit.
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