Sceptre Televison & Video - Page 5 - Recent Questions, Troubleshooting & Support

That could be a T-Con board failure. If you can change channels, turn up the volume etc, then it could be the T-Con.

There are two easy fixes you can try. Both require you to take the back panel off. If you are not comfortable doing this, take it to a repair shop.
UNPLUG IT.
Place the TV face down on a soft/solid surface.
After you get the back panel off, there are three silver boxes. There are white and black wires leading from the off switch to the top silver box. Take the cover off that box.
Inside is a ceramic fuse. Test that fuse. If it is blown, your local electronics shop can find a replacement.
If not, disconnect the white and black wires from the PC board. Remove the 6 screws holding it in place.
Look for scorch marks under the board.
Cut a thick piece of plastic and tape id down over the scorch marks.
Re-attach the board with the six screws and re-connect the black and white wires.

Turn the power switch to the OFF position and plug in the TV.
Turn on the power switch while WATCHING the board you just removed.
If you hear a sizzle, turn off the switch and get a thicker piece of plasic.
If not, the TV should come back on.
Re-assemble the silver box and put the back on.

Hope this helps.

Almost certainly an electrical fault. If this is an LED TV the board with audio system will need to be replaced.

When something gets worse after it's been on a while, that always points to something overheating, such as a semi-conductor. When it cools down, it returns to normal. Examination inside the unit might give a clue to the faulty part. Look around for the signs of heating. Also check any big capacitors for bulging tops or coloured stuff coming out of them. Replacing boards is much cheaper than replacing the TV. The only way you would need to do that is if there was a screen problem. But as the picture is good for part of the time anyway it's OK.

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Usually componite and composite are together. Try powering on system and tv. Plug yellow into green if theres not a yellow then white to white and red to red. If that dont work some tvs require an adapter for composite.

Sound board faulty

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