Start problems I can't turn on.I'm trying to start but the tv is not turning on

What i would do if this was happening to me, i would turn it on by the buttons on the tv and if that still doesn't help it turn on then use the tv remote. I bet you have already tried both and haven't worked. How long have you had the tv for?

maybe try turning off at wall rebooting device can harm the computer if you turn off both you may turn off modem box thingie

Based on your description, it is possible that the power supply is starting to go. Before doing anything, first check to see if it is the TV or the source. Use a few different sources to narrow down the problem. You didn't mention what type of hookup you used from the receiver to the TV. Assuming you are using HDMI, it is possible that the cable is intermittent. Try using a different one. Also try as below.
1. Once the TV is working with sound, what happens if you turn the TV off and then back on, is the sound still there?
2. Use the TV antenna input to see if you can replicate the problem using an antenna. If the problem is indeed the TV, it should do the same with the antenna.

Your LG Tv having a power IC problem, so you either report the problem to qualifying electriclal repairer to solve your TV problem. Though this will be helpful

I finally managed to solve this problem by unplugging everything - scarts - HDD cables - power etc and left it for an hour. When I turned it back on again the problem had sorted itself out.

Probably a new problem given the age of the TV. If you already haven't done so, try unplugging the power for about 10 minutes, plug back in and try again.

Replace CP150 on the deflection board and that should take care of the problem since it starts once in a wnile if it didnt start ever then you would need the 259296 flyback and the CP150 Capacitor.

It an over voltage or over current problem.....Turning the TV on and off or unplugging the TV may allow you to start the TV. Once started the TV may run for days until you turn it off.
The TV will require a new board to correct the problem...

Probably a bad main board or T-CON board or both. If you're trying to fix yourself, try disconnecting the cable (LDVS) from the small board (T-CON) at top center of the LCD panel and see if it still cycles. Note, be very careful with that cable, it is very delicate. If it still is cycling off and on, then it is probably the main board. A slight chance it may be the power board also.

when is the wheel is broken doo you cleaned the glass around because if it not rotate tv not turning on it is a one of the posibilitis