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Hello , my name is Jack Perhaps I can help you with this problem but first i would have a few questions ;
If you were able to try the firmware then you must be able to see the tv`s own menu , is that correct ?
Is this tv connected to a cable box/converter,satellite receiver,digital converter etc ?Or directly to antenna/cable from the wall outlet ,no box with its own remote ?
Do you have other equipment like a dvd,bluray,games etc. connected to this tv ?If so , do you have the same problem there ?
i cannot access the menu and it's connected to 3 sattelite systems hdmi an a roku as well the roku symbol will come up but after that nothing
Ok and while the picture goes , do you still have the sound ?
Is the screen just blank with some background light or completely dark like when the tv is off ?
Also , just to make sure here , I was talking about the tv`s own menu , not the satellite menu.
no i cant see the tv's menu at all the screen goes black except when the roku is hooked to it and yes there is sound