Why have I lost reception of one ASTRA channel?

Answer

If just one channel is no longer available this may be because it has stopped broadcasting, either temporarily or permanently. Otherwise it may have changed its transmission frequency or even the satellite used. The broadcaster or your Pay-TV provider will be able to tell you the new frequency to tune to but if the channel has moved to a satellite in a different orbital position, you may no longer be able to receive it with your current equipment.

See if a channel has changed frequency or satellite