I have a 2007 MAG LCD TV. After a channel scan the set went black but the blue power light was on as well as the back lighting. You could also hear a slight humming like a fan. It will not turn of manually so I unplugged the set. When I plugged it back in it did the same thing and it still wont turn off using any buttons on the set. Oh the model is 3200 if that helps
SOURCE: can't get power on tv
They do not use circuit breakers only fuses. The fuse is on the power supply board where the cable from the AC box plugs connects to the board. If the fuse doesnt fix it the power supply board will probably have to be replaced, if not one of the other boards may also be damaged.
SOURCE: Black Screen, Audio only , TV will not turn off
back light out,panel defective.no fuse will correct your problem.panel is bad.
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SOURCE: I have a 42
If its a plasma tv there's not light behind the display panel, I was a bit confused when I read that....LOL Light behind the tv will only happen if its an LCD tv because it uses CCFL's to illuminate the LCD panel. Plasma displays generate their own light from the plasma pixels.
Anyway,
If its an LCD tv then either the inverter, power, or time control circuits need to be serviced or replaced. If its a plasma tv then your X or Y sustain, or power circuits need to be serviced or replaced. The interface can cause a similar problem also but only with plasma tv.....
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