I have a Sceptre 55 inch tv. Tv turns on for spit second and then no screen or sound. Done some research and replaced the power supply, my tv isn’t working still. What else could it be?

SOURCE: new Sceptre 37" LCD TV does not turn on

normally the a-v cables are color coded the white goes with white the red goes with red and yellow goes with the yellow and when putting it in the dvd player if applicable it should be the same way did your tv come with a manual showing you how to hook it up

SOURCE: Samsung 55" TV does not turn on

CHECK YOUR RED ,GREEN AND BLUE CRT'S THERE MAY BE A SMALL CRACK ON THEM.MAKE SURE TO TAKE THE YOKE OFF AND INSPECT THE ENTIRE TUBE IF THER IS A CRACK IT IS CAUSING YOUR TV TO GO INTO SAFE MODE. ALSO CHECK THAT NONE OF THE COOLING FLUID HAS DRAINED OUT OF THE TUBES ON TO THE CRT BOARDS IF SO REPLACE THE BOARDS AND CRT IF CRACKED. YOU CAN FIND ALL THE PARTS AT PARTSTORE.COM HOPE THIS HELPS.

SOURCE: i have a 32 inch sceptre naga. when i turn on a

mine does the same thing, before... it would come on when i turned it on & off. But now it blue screens then blank black. Blue means if it stays blue & i turn on my computer it will show all the computer stuff, i have not used TV yet.. But if you can get it to stay blue you can change things with the cc control, or swap..
If you find how to keep it blue let me know please..

SOURCE: Sceptre LCD TV power come on, but there is no picture or sound.

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.

SOURCE: Picture & sound go on & off every sec, red light blinks 5 times

helloFive blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

shaun