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Nash LCD TV NTFT-3203CX screen on then off

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chandra:
Nash LCD TV NTFT-3203CX .When on the tv,some times a flash on screen then dark.some times it gets on and then if there is no input signal it shows plain screen.If I give the input video signal the screen goes to dark.Anybody can help.But the standby led remains green.

ProDave:
Check the backlights. It's common with many sets for the backlights to come on at power up, then trip a second or two later.

If it is that, we can give some more tips what to look for.

chandra:
Yes.Same. The back lights are on for one second and then goes off.The power 24volts are goes to 0volt.But the 5v and power on supply is steady.Tv is not going to standby.

chandra:
I checked the backlights are ok.When switch on some time a flash at screen or sometime the TV name NASH displaying 10 secondds.

ProDave:
Okay, the problem is a fault on the inverter board.  Something is causing it to trip.  Common culprits are capacitors or the transformers, sometimes even just dry joints.

Do you have the service manual or a circuit for the inverter?

Have a look and see what chip it uses.  If it's an OZ960, there's a neat trick to fix it while you diagnose the fault proper.

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