Tv has been turning off right after you turn it on then after a few attempts it would stay on now the power button on front turns green, it tries to come on but then turns off.

I have one of those right here attached to my computer so I can watch TV on the PC. The red-green light is the power indicator. Your converter is turning off for some reason. Possibly it is getting a signal from another remote, and turning off. You can block the converter's remote sensor with something (black tape works) and then change the channels with front panel buttons if it has them.
Mine has power buttons for both the TV and the converter, so watch out for that.

If you wish to get more details, check this site. Pull up older posts there. Check the site with patience, as it has over 2200 posts now. All are related to electronic equipment repair help.

My sylvania 32 LC320SL1 HDTV tv will not turn on it stays in standby and when I click the power button the power light flash around ten times then the screen flashes on and says digital television in the bottom right then goes back into standby its make a click sound as it goes from power on to standy by

My Loewe Aconda 81 HDR TV will not turn on. When I press the power button the green light comes on but the red light stays on with it and after a few seconds the green light goes out and the red light stays on. Any help please.

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,

MY TV TURNS OFF AFTER WE TURN IT ON IT GOES BACK OFF A FEW TIMES AND THEN STAYS ON. AND WHEN I COME HOME FROM WORK IT STARTS ALL OVER AGAIN, THAT HAPPENED FOR 2 WKS NOW IT JUST GOES OFF YOU ONLY SEE THE GREEN LIGHT ON THE FRONT COME ON(POWER LIGHT) AND IT GOES RIGHT BACK OFF IT WILL NOT STAY ON

Sounds power supply board is bad in your TV and most probably replacement of all electrolytic capacitors in power supply board will solve the issue.
Take TV to local TV repair shop for repair.
Thanks.

i have seen this before and it may be the front power button being stuck and when your remote turns it on the stuck button turns it back off again. I have an older mitsubishi that will not boot up right sometimes and i have to unplug it and plug it back in fot it to come on. I used to pick up broken tv and fix the power buton and resell them

I had a 26" Samsung LCD that wouldn't turn on, and the red light stayed on too, so I knew it was getting power. I found some info out there and figured out how to fix it. Also made a video to show others. I'm a complete newb so if I can do it, I know a lot of others can too. Make sure you research stuff and be safe when fixing it. I take no responsibility if you mess up your own TV! But like I said, I fixed it, so I figured almost anyone can. Also, it only cost me $1.40.

http://www.youtube.com/watch?v=vWKlex7kA7A

Yeppers. Sounds like the standby power supply has a bad capacitor in it and the regulator Ic is defective. These parts should only be replaced by quilified technician as there is very high voltage inside these sets. Good Luck