tx-55cx400b lose channels after standby

John Carmichael

Novice Member
Can anyone help?

Panasonic tx-55cx400b
I can tune in channels, all fine until I go to standby, after standby all channels will be lost, and I get the following message
"No channels have been added yet, please go to the installation menu to add channels"

I've already tried first time installation & firmware update.

Panasonic suggested maybe in Hotel mode - but I can't access - I've tried these two methods
Access command to the Hotel mode setup menu.
In order to display the Hotel mode setup menu, please enter the following command (within 2
[TV] : Vol.[Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.
To do this, press the “Menu” buttons on the TV and the remote control simultaneously, starting with the menu button on the TV.
This for about 7 seconds.
The factory menu will appear.

Any suggestions?


Distinguished Member
Sounds like a faulty TV. Probably worth getting it looked at/replaced. Hotel mode won't really help you.

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