why does my tv need retuning every time i switch it back on

peter llewellyn, October 2005

Don't know that set or if it uses same circuit as the following but a problem with model C28ER55NB not storing channels above CH36 has been due to a faulty UHF Tuner.

Cobweb, October 2005

sorry about the lack of imfo the tv is a
Sanyo c28er57nb
thanks for the quick response

peter llewellyn, October 2005

Need to provide make and model of TV as they're not all the same. Common causes...

1) Faulty EAROM (memory IC) or loss of supply voltage to it.
2) Loss of tuning voltage. Usually 33V regulator.
3) On very old TV's faulty back-up Ni-Cad battery.
4) The TV is in Hotel mode and it needs to be deactivated.
5) Your TV needs you to press or select store on TV or in tuning menu to complete the tuning process.

Cobweb, October 2005