Lost channels hello and thank you ive retuned my sons portable television as some of his digital channels wouldnt work it said to retune it but in doing so ive now only got 1,2,4 and 5 he is very upset and would appreciate u helping me please

Check and replace its tuner. It is faulty. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

It's October 2012 and I have a problem with my exact same model of JVC TV which has worked fine since i bought it in January. In fact it has worked the best out of the four that we have in the house working off the same aerial until 4 days ago. I tried retuneing and then the problem expanded to more channels. I tried to reset to factory options and then do a retune but lost all the channels. I have again reset and retuned and I'm back with channels that I can only tune into for between 4 and 15 seconds before the screen goes blank. None of the other televisions are affected. Digital UK website show no works to transmitters in our area and JVC are impossible to contact. Their site sends one around in circles in a most frustrating and unhelpful way. I will not be buying JVC again. Any help offered would be gratefully accepted!

To restore missing channels, you need to retune your digital receiver (box or TV).

The retuning process runs a scan and finds all the available channels. Your box may have an Add New Channels option that you can use, but this may not pick up other changes such as channels being moved to a different multiplex or removed altogether.
How to retune

1. Switch on your digital box and/or TV.
2. Press Menu on the remote control.
3. Select the Setup or Installation option.
4. Select the 'First time installation' option (sometimes called 'Factory reset', 'Full retune' or 'Default settings').
5. Press OK if your equipment asks if you want to delete all your channels. Don't worry, this is normal.
6. If you are prompted for a code, try 0000 or 1234.
7. Channels will be automatically installed. This may take a few minutes and your equipment may shut down and restart.
8. After retuning, you will have to redo your Favourites list and other settings. If you retune a digital TV recorder, you also should reset future recordings.

cable company moved them do a rescan of your channels

Refer to the following Freeview Link

http://www.freeview.co.uk/freeview/Resolutions/About-Channels/Retuning/Retune-after-30-September-2009

You have to retuen your receiver or TV to pick up the reallocated channels.

Hi, I switch on the humaxand it says -retune. I retune and it finds the channels but will not retain when OK is pressed. It shows the correct postcodebut after numerous attempts it still fails to hold the channels. Please help

You may lose some channels when you retune the TV as the channels have been rearranged. To locate them look at the EPG although you may still find that some channels are no longer available on FREEVIEW. See the following link for additional information

http://www.freeview.co.uk/_retuneinfo/

If the above process does not work then check the link above for additional information and also visit the accompanying site links below to find more information for your model of TV / FREEVIEW box.

For troubleshooting the retune procedure visit http://tvretune.co.uk/troubleshooting/

For specific model information visit http://tvretune.co.uk/productmanuals/

Find the D menu button on your remote and go to channel sort rescan using auto retune.

You may lose some channels when you retune the TV as the channels have been rearranged. To locate them look at the EPG although you may still find that some channels are no longer available on FREEVIEW. See the following link for additional information

http://www.freeview.co.uk/_retuneinfo/

If the above process does not work then check the link above for additional information and also visit the accompanying site links below to find more information for your model of TV / FREEVIEW box.

For troubleshooting the retune procedure visit http://tvretune.co.uk/troubleshooting/

For specific model information visit http://tvretune.co.uk/productmanuals/

You may lose some channels when you retune the TV as the channels have been rearranged. To locate them look at the EPG although you may still find that some channels are no longer available on FREEVIEW. See the following link for additional information

http://www.freeview.co.uk/_retuneinfo/

If the above process does not work then check the link above for additional information and also visit the accompanying site links below to find more information for your model of TV / FREEVIEW box.

For troubleshooting the retune procedure visit http://tvretune.co.uk/troubleshooting/

For specific model information visit http://tvretune.co.uk/productmanuals/