When I switch to hdmi and back to tv I have to retune all the tv channells

Sounds like a few things going on here... Your indoor antenna for one is probably not making it easy for you as an outdoor antenna will work a whole lot better. This is why it open picks up half the channels and they are pixelating. Also you may have faulty rf leads. Replace these.

Hi, Try this go to menue on tv run the channel scan function.
If you are using a PVR or Tivo do the same with that, But you will have to set your TV to channel 3 to get your PVR/Tivo going. or in some TVs TV1 or TV2...depending how you hooked it up.or if you have HDMI cable... Good luck

It sounds like yoru PS3 has stopped handshaking with your tv. It can happen. It's possible your brother disrupted the connection by unplugging the PS3 before it was shut down. You can try turning on the PS3 first, and then turning on the tv, or vice versa. If that doesn't work, you may need to invest in a cheap HDMI splitter, to plug the PS3 into, and then send the signal from the splitter to the TV. It has happened to me with a computer with the same hardware, once with an LED tv, and once with my surround sound receiver, completely out of the blue. You can try switching HDMI cables, sources, doing putting the tv into maintenance mode and resetting the software. If none of that works, your only option may be to use an HDMI splitter. I did extensive research and read numerous reviews before I settled on this model, due to many recommendations:
ViewHD 2 Port 1x2 Powered HDMI Mini Splitter for 1080P & 3D ' Model: VHD-1X2MN3D
It's available on Amazon here:
Amazon com ViewHD 2 Port 1x2 Powered HDMI Mini Splitter for 1080P 3D Model...
Just in case your HDMI cable was damaged when your brother unplugged it, go ahead and get yourself a decent HDMI cable. The Amazon HDMI cables work just fine.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/reginald_bec291de192ca44f

your output cable is in the back of your t.v. there is a color designated on its hole then you have to buy a a cable in any electronic shop like components cable or hdmi cable try to read the back panel of your tv

If you have the DVR connected to the TV with the Coaxial and the HDMI that is probably causing the problem I work for a Cable company and have dealt with this problem on numerous occasions. Try just disconnecting the Coaxial cable from the cable box that should fix this issue.

I have the same set, same problem with one of my MOTOROLA boxes, but not with another. I have a SONY TV that works fine with this new MOTO box, but the new VIZIO does not. The audio is coming through the HDMI cable just fine, and the fact that it works when you cycle power on your TV means it's the SYNC between the TV and the BOX. I have the identical problem and am taking back the MOTO box for another one. I spoke to VIZIO for about 45 minutes trying different things. They think it's the MOTOROLA box, COX (my cable company) thinks it's this particular box, who knows.

have you tried to change the audio settings to HDMI on tv? when u have HDMI hookd up u have to change the audio to HDMI also

The problem your describing can be contributed to your cable box. Depending on your cable company there are times when the box has trouble translating the signal to the tv. You tv is operating normally. Suggest to the cable company to switch your box.

does this only occur with one input and/or does it occur when using HDMI/component cables.

if so, try getting a new HDMI cable. I have the same problem with PS3...and im about to order a new HDMI cable.

If you are hooked up with a DVI cable you need to either use hdmi, component cables or turn off the non hd override...