Since the digital switchover I can't access any channels

This tv is a flat LCD tv wright?Not a big bulge back CRT tube tv,If this is CRT tv is analoge design tv dosen't have freeview Digital Tuner inside of the tv.If it is a flat LCD tv.Make sure ur setting for retuning not on CALBE SETTING.Make sure ur tv setting are AIR SETTING and have good Digtial antena will get a stronger signal get all the free AIR broadcasting stantoins channels,a good strong Digital antenna design does make big a different.

can you try a external antenna on it?

This TV will work fine for the switchover. As it is already using the freeview box, technically, you have already done the switchover.
Happy viewing.

Hi It sounds like you need to re-tune your DVB-Tuner on your TV, NOT the old analogue one, it'll be in settings or setup, or installation and use the "First Time Install" option, because it clears all old channels and loads all fresh new ones! hope this helps!

So you think I'm gonna answer my own question then tell you how I did it, so that you can then CHARGE someone else for MY answer?! I don't think so! An excellent 'service' you have here - I DON'T think.

There are a few problems turning up as a result of the update. Do a factory settings on the box if it has the option to do so. Be aware of the actual transmitter you are on and the channels/frequencies it uses so when tuning you know whether its finding channels at the bottom, middle or top of the band. Sometimes you may need to unplug the aerial upto or after a particular channel to stop the box tuning unwanted transmitters. If you are picking more than 1 transmitter up you will often get extra channels in wrong locations

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/

I also have the Sony IDTV KD-28DX4OU Digital TV.After the digital switchover I lost BBC1 and BBC2 despite retuning three times.
I contacted Digital switchover people (useless) and they passed the buck to Sony.I contacted Sony and they said they cannot fix the problem and that I should get a digital set top box. So the £650 I spent on integrated Digital TV has been wasted.If like me your cheesed off with this then I suggest you complain here
Sony United Kingdom Limited
Customer Information Centre (CSG)
Jays Close
Basingstoke
RG22 4SB
I have

Problem righted itself overnight following digital switchover

Try channels 801 802 803 etc