The TV has lost sound and shuts off and automatically turns on then shuts off again all while the poweer light is on and off at differrent times.

The fault is with its main board itself. Troubleshooting to this board is not an easy work to a user can do. It will be best to contact any service technician. google.com/+GopakumarGopalan

just take it to repair shop

Lamp is burned out or makes a popping sound.
When the lamp reaches its end of life, it may burn out and may make a loud popping sound.
If this occurs, the projector does not turn back on. To replace the lamp, see on page 38.
LAMP light is solid amber If the LAMP light is solid amber, replace the lamp.
LAMP light is blinking amber If the LAMP light and the Power light are blinking amber, the lamp driver has failed and the projector will automatically shut down.
If the LAMP light is blinking amber and Power light is solid blue, the color wheel has
failed and the projector will automatically shut down.
Unplug the power cord after 3minutes then turn the display on again. If this problem
persists, contact Dell™.
TEMP light is solid amber The projector has overheated. The display automatically shuts down. Turn the display on again after the projector cools down. If the problem persists, contact Dell™.
TEMP light is blinking amber A projector fan has failed and the projector will automatically shut down. If the problem persists, contact Dell™.

Try draining the power of the computer first. completely shut it down by pressing poweer button for like 5-7 sec. then unplug power supply from the outlet. then press and hold power button for another 15-20 sec. After that, plug back in the power cord, and turn computer on normally.

YOU LOST VERTICAL DEFLECTION THIS IS NOT HARD TO SOLVE

Did you try this yet

SYSTEM RESET
If the TV will not respond to either the remote control
or the front panel controls and/or will not power Off,
press the SYSTEM RESET button with a pointed item
like the end point of a paperclip. The TV will turn Off
and the TIMER light will flash quickly for about one
minute. When the TIMER light stops flashing, you may
turn on the TV again. Changes you made the last time
the TV was On before you used the SYSTEM RESET
button may be lost, however, the changes you made
previously are not lost.
POWER/TIMER Indicator
The green light is a multi-function indicator. This light
will flash rapidly for about one minute each time the TV
is plugged into the wall electrical outlet, when power
is restored after a power failure, or using the SYSTEM
RESET button. Do not attempt to turn on the TV again
during this period. Wait for the flashing to stop and
the light to turn off, before attempting to turn the TV
on. While the TV is powered on, the light illuminates
steadily. If the TV has been programmed to turn on
automatically using the Timer feature,

Green light flashes 5 and then red light flashes 6

is this electricity pocket plugged up to a timer ? or take the tv back to the shop... lost the receit just look for the same tv on computer

Is the red light blinking in the front of the tv. Counnt the blink sequence then I can give you more info.

If it's staying on for just a short period of time it sounds like there is a sensor that is giving the unit a faulty condition (Perhaps for reason or due to a fault in the sensor). There are normally a few temp sensors in the TV around the Lamp and Ballast. They may be bad, or the lamp or ballast is just generating too much heat.