The flyback transformer may have failed. Usually on those sets when they do.. the set will try to come on, make a short squeal and shut right off.. The part is relatively inexpensive if you can install and adjust it yourself. It will require de-soldering and resoldering of the new part...
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Short circuited component/s at its main board. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. http://electronicshelponline.blogspot.com/
It sounds like there`s a sort on the secondaries of the power supply. Before the power went off, did you ever turn the tv off by unplugging it?? In other words, did you turn the power off completely to the set or leaving it in standby?? if you always left it in stby, it will be the capacitors in the power supply, they dry out if the power is always on, so they will need replacing. If you did turn off the power, then I think you`ll find that the power cut had nothing to do with the fault you`ve got now, it will be the Line Output Stage which has failed or gone short circuit. Ian
The TV is in protection mode because of a fault with moving it and then coming on briefly I would suspect that the fault is a dry joint ( a solder joint which has fractured) finding it can be time consuming but it is most likely to be around the caps in the line output stage which need resoldering.
tv wont turn on when i hit power it makes the clicking noise like it is going to turn on, but never does and the red timer light next to the power button just flashes. help! trinitron kv29f1u only clicks and blinks