Sounds like its main system control memory IC fault. Contact any service technician to replace it. Before contacting any, do a reset to this set and check.
To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
SOURCE: My Skyworth LCD TV 32
G'Day!
Unfortunately, what you're describing is a repair
issue. You won't be able to address the problem with troubleshooting.
There is a part inside the TV that needs to be replaced. If you're
under warranty, this will cost you nothing. If you're not under
warranty the cost will likely be a minimum of $200 parts and labor.
However, be warned that the cost could be considerably higher.
I hope I've provided you useful assistance and that this information
allows you to make an informed decision as to how to proceed from
here. Please be sure to vote on my response. I hope I've earned a
good rating from you today.
Please post a comment if you need
additional assistance so that I can help you further.
SOURCE: Vizio LCD DTV 32 inch. Model L32. I can't 'scan'
Follow up on No DTV tuner after unplugging it a month for vacation. After I let it set plugged in for about 2-3 days it started working normally again and has been fine ever since. I hope this may help someone else. Genez 6-7-09
SOURCE: LCD 32 inch Auto Scan issue
I have experienced exactly the same issue on two Westinghouse sets. Try turning the set off when it reaches 83%. When I turn mine off and back on, it has saved the channels -- at least the ones it had found before it got hung up.
SOURCE: my 32 inch westinghouse lcd tv's screen turned pink when on
your T-con board is failing you need a tech to replace it about a 150 dollar job
SOURCE: SAMASUNG 32 INCH TV FROZEN ON DTV CHANNEL 1
These are the steps to reset the DTV features and unfreeze your TV:
I hope that helps.
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