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Lots of possibilities. If you are using the remote, try also using buttons on the TV to change channels. If TV buttons work, the remote is broken or perhaps try changing batteries and cleaning battery contacts on the remote. If neither work, lots of other things to try. You may need to set preselect channels, so your TV thinks there is only one channel out there until you do. If you are on a cable box you just need channel 3 and change channels on the cable box. I can't tell what you mean by "audio changes with the channel" ... if you mean that when you try to advance channels, it increases volume and moving down in channels lowers volume that would be strange -- if you are using a programable remote it might not be set correctly (try another programming code). The "blurred" picture is probably symptomatic of having the set on the wrong channel, and if you could set channel it might clear up ... I'd start with getting channels to change. If you need more help, give the brand and model of TV, say if you are using a remote (original or programable), and what the 'audio changes' comment means in more detail. Probably worst case is that your tuner circuit is fried, but don't assume that without more diagnostic.
1 look for a remote stuck in a couch(or other near place) that is barely peaking out enough to change the channel.
2. Check that the channel up or down button is not stuck on the tv and or any remote that is set up for it.
3. Find the tv's infrared sensor and cover it with your hand or tape. If the channel changing stops then something is emitting infrared that is causing it to channel hop (occasionally security systems can cause this to happen) also some kids toys. Anything that emits infrared light basically.
once you have found the source (neighbor with the same brand tv for example) or a remote with the cushion pressing the button for you. then you will should be good.
Remove batteries from remote, and test again the touch buttons on TV with remote batteries out. This to exclude the possibility that remote has a stuck button.
If the problem persists , then it is probably a faulty IR board on TV (the one that gets IR signal from remote), or a faulty touch button switch.
some tv's default to channel 2 after being unplugged.since it is a older tv ,the buttons on the remote and the tv maybe worn down.on the tv itself try pushing the buttons down a liitle harder. if you have aux or line in/video inputs,scroll down on the channel button to log into a aux channel for the dvd player.as for the remote try buying a cheap universal remote to see if that works.
good luck
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