Samsung smart tv perfect sound tv screen is black if you shine light at a angle on screen you can see picture
SOURCE: Black screen on my hitachi ultravision 55 inch plasma tv
With a black screen, it could be any number of things. You cold have a bad Y sustain brd, Z sustain brd, digital brd, etc. As the tv powers on it develops turn on signals to the power supply. If there are any bad drive boards, these signals will not be developed thus not allowing the power supply to fully energize. This repair will probably require a qualified technician.
SOURCE: SanyoTV-blk screen w/thin line of light across screen great sound
Your Vertical Amp is probably Blown (bad) , but before you change that check all capacitors around the vertical amp IC and / or resolder resistors and diodes around vertical amplifier.
And NO it is NOT the Picture Tube
Good Luck
JG
SOURCE: No Picture on a 4 yr old TV
I would take it to a repair shop, but it sounds like somewhere in the power board.
SOURCE: have a 55 inch hitachi plasma tv. The picture
Seems as if your high voltage power supply went kaput. This happens sometimes see the complaint
at: http://hitachi-home-electronics.pissedconsumer.com/hitachi-55hds69-plasma-tv-20100417178696.html
See: http://www.partstore.com/Model/Hitachi+Ltd/Hitachi/55HDS69.aspx for a list of parts and you can see if it is worth fixing
SOURCE: when i turn the power
If you take the back off you might see a couple of electrolytic caps that might be bulged on the power supply board. The power supply board is getting weak, and if you replace the electrolytic caps that will fix the problem. You can also replace the power supply, and you can check at www.partstore.com for a power supply.
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