I have the same problem when I scan for channels it picks up that channel. I have to unhook my cable line and remove the channel then rebook up.
Try to unplug power from set for a while and plug back to reboot--immediately delete that channel from the set's memory as it may contain signal that is causing this.
Also look to see if the set has a feature to lock out the buttons and or the remote control---a few do.
Most likely something in the signal for that set caused the set to lock up.
SOURCE: westinghouse lcd 26" has blue screen and no sound
1. plug it into a input device (well duuh)
2. it could be a fried mother board or a cracked one !!
3. it could be the sound plate a gt674jj49329710hfwllw plate u need u probably have a gt683jj63835540gdhdys plate !!
4. take it back !!
SOURCE: when we turn the tv on it will stay about 5 to 10
This model TV is known for having power supply problems. The only way to be positive of the problem is to check the components to verify what is out of specs. Replacing parts that are not known to be defective can get expensive and may not result in a working TV. The safety circuitry is shutting the TV down when it detects a problem. Often this is caused by capacitors going bad. Looking for bulging and leaking capacitors and replacing any found can often result in a working TV.
Best Regards,
Beach TV Repair
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