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Good: Connect the antenna to the converter box where it says antenna/in. Connect the coax cable to where it says to tv/out on the converter box. Connect this cable to the coax/rf input on the television. Plug in and turn on the converter box and the television. Make sure the television is on channel 3 and follow the setup process that pops up on the screen.
Better: Connect RCA cables to the converter box where the yellow red and white holes are. Connect them to an RCA input on your television. If you don't have a red hole on the television that's ok, just connect yellow and white and leave the red plug dangling. Connect the antenna to the converter box where it says antenna/in. Plug in everything and turn everything on. Press the video/input/source button until you have located the setup screen for the converter box and follow the directions on the screen.
U have HDMI ports,order HD from the cable or telicom compannies.Use a HDMI cable for the tv,also get HD channels.Do not have HDMI ports than ur Main signal board must replaced the Antena analog coaxial it broken.Well not able to buy the coaxial input for the antena along for part.
Tries a better antena like a digital antena or a roof antena for the free air tv signal.Rescan the channels.
If cable,satalite or telicom signals unplug replug the reciever box for reboot to upgrade.Make sure ur tv in cable setting,rescan for for dhannels.
Try running the antenna or cable through a vcr and then hook the VCR to one of the video input of the TV (use yellow red and white out of VCR to TV) Try changing channels with the VCR.
I don't know if your on cable satelite or antenna.
Bad news. The tuner is bad. Instead of fixing the problem, you can hook up a vcr or dvd that has a tuner built in it. Hook it up to the video input and use the vcr or dvd to change channels. Or you can replace the tuner in the tv.
Since you have a surround sound system, you probably should just bypass the TV's audio.
Connect the red/white plugs from your digital cable box to one of the inputs on your surround sound system but not the Phono input unless the Phono input lists something aside from Phono, like Aux/Phono or CD/Phono.
Connect the S-Video or composite (yellow) video plug from your digital cable box directly to the S-Video or composite (yellow) video jack on your TV.
If your digital cable box does not have a S-Video (4 pins and flat rectangular hole) or Composite (yellow RCA jack) jack and only has the screw/push-on type cable with the pin in it, then leave the remaining connections as-is.
Now switch your surround sound system to the input you connected the red and white plugs to and turn on your TV. You should see picture from the TV, but hear audio from the surround sound system.
It is normal for VIDEO 3 to be displayed in the upper left of the picture if there is no signal present at the INPUT 3 jacks. This is to let you know that although the picture is black and there is no sound, the TV is still on. If you have a good signal at INPUT 3 and the VIDEO 3 stays on the screen, take the Sony remote, point it at the TV and press the DISPLAY button until you see "DISPLAY OFF" on the screen. About 3 seconds later, the words should vanish.