Battery inside ?

HI, I have a JVC Mode-tv 20240 After 5 years, if the TV is turned off and back on the next day, there is no channel signal and the screen turns to blue on every station . To fix this I have touse the auto program set up, this is fine all day until I shut it off. I'm guessing that there may be a battery that's dead which remebers the memory. Is this possible ? What battery do I need to replace it? Thank you for your time, Jay

Reply