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- Could you please get me the model number written on back of TV?
- How old is the TV and how long it have had the problem?
I guess the TV model number would be TX-42A400B or some thing?
Since TV loses channel data that indicates EEPROM (memory) chip failure, this chip would be mounted on main board of TV and entire main board will be replaced to resolve the problem. I am really sorry about this and you are going to have to return the TV to have it replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you. If TV is out of warranty then you would need to take the TV in repair shop for main board replacement and this kind or repair may cost around 90 plus Pounds or so. I trust my input will help you out. Please feel free to respond if you have any additional questions.A positive rating to answer would be greatly appreciated, please click on 5 star on this page then click submit/finish button so I can get credit on website for my work. If you don't see rating option then intimate here.Thanks.