Facing TV Problems? Ask a TV Technician.
Hello there did anything lead up to this please?
Hello again please try unplugging the TV from the wall power and press the power button on the TV itself for 5 seconds and then plug the TV back in to the power.Now try turning on the TV do you still get the message?If so, please identify the AV socket involved and get an RCA plug (you may have an RCA cable lying around). Buy some contact cleaner from a hardware shop and spray the RCA plug. Then insert and remove the RCA plug into the AV socket on the TV a few times. Repeat this to the other AV sockets as there are normally three AV sockets to each input (Yellow, red & White).Try this and see if the message removes. If this still doesn't work then it will be necessary to open the TV.
Sorry I am in South Africa and cannot call you. Did you read my answer above please?