HI, my name is***** have read your question and understand that you have lost some channels and some were week before you re-tuned the system? Do other devices all play normal like a DVD player or game console etc? Also what are you using to attain a signal, an antenna outside connected directly to the TV?
Is it amplified?
Okay so its not amplified so we can rule the fact that the amplification system is not the problem, my first thought would be that their is possible a antenna or a cable going to the antenna connecting back from the to the TV has developed a soft short causing the signal to be week. If their was a storm it is possible wind may have cause the wire or something to get blown around causing a problem with the connection to the antenna wire. I would first do as much trouble shooting with the antenna system before considering a problem with the TV, It is possible though that in a storm that contained lighting their could have been a spike on the antenna line causing the tuner to malfunction, would not want to advise on changing a main board in the TV though if the problem is with Antenna.
Your welcome. Thank you
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