Logik L22FED12A TV - comes on but switches off after few secs

[daveytee999]

I have a cheap Logik TV with DVD unit integrated. It comes on when you press the power button and the Logik logo comes up on screen but then after a few seconds the TV goes back to standby.

Not used to troubleshooting TVs - my background is PCs/Networks/Routers but this looks like it's not a power issue (surely the TV wouldn't power up)
It's not a backlight issue cos the backlight comes on when Logik logo appears.
Have had the TV apart and done basic testing (although just proved that there is mains power and some secondary low voltage coming out).
Not sure what else to try.

[lotas]

Re: Logik TV - comes on but switches off after few secs

First, you need to check all the output voltages on the DC / DC converters, if the voltage is normal and without ripple the firmware could fly off or there is a problem with the processor.

[SMDFlea]

Re: Logik TV - comes on but switches off after few secs

I have a cheap Logik TV with DVD unit integrated. It comes on when you press the power button and the Logik logo comes up on screen but then after a few seconds the TV goes back to standby.

Not used to troubleshooting TVs - my background is PCs/Networks/Routers but this looks like it's not a power issue (surely the TV wouldn't power up)
It's not a backlight issue cos the backlight comes on when Logik logo appears.
Have had the TV apart and done basic testing (although just proved that there is mains power and some secondary low voltage coming out).
Not sure what else to try.

Whats the model number....

[daveytee999]

Re: Logik TV - comes on but switches off after few secs

The model number is: L22FED12A

[daveytee999]

Re: Logik TV - comes on but switches off after few secs

First, you need to check all the output voltages on the DC / DC converters, if the voltage is normal and without ripple the firmware could fly off or there is a problem with the processor.

Cheers, I'll have a go at checking them.