ChatterBank1 min ago
How Can I Reset Tv To Factory Settings - Lost Itv And Channel 4
5 Answers
My Toshiba with built in Freeview (2 years old) suddenly lost ITV, All Channel 4, Channel 5 but none of the plus channels. I retuned - no change. Several times. Unplugged etc etc..No they all vanished.
Replaced TV with my Bush TV all channels are fine. No problem. Same aerial as for Toshiba. One TV works. One does not.
I must have mis set my Toshiba? If so any idea how to get back to out of the box from the factory scenario? Most grateful for advice.
Toshiba 40D1333B
Replaced TV with my Bush TV all channels are fine. No problem. Same aerial as for Toshiba. One TV works. One does not.
I must have mis set my Toshiba? If so any idea how to get back to out of the box from the factory scenario? Most grateful for advice.
Toshiba 40D1333B
Answers
1 to 5 of 5
It's not your TV set - it's your aerial! Freeview TV channels are transmitted in 'bundles' (called 'multiplexes
19:02 Wed 09th Mar 2016
Having checked the manual online, I would suggest that you have to perform an "Initial Installation" again.
The exact procedure for finding that option isn't made very clear (to me at least), but the "Menu" button on the remote should lead you through to the correct sequence, shown here -
http://
The exact procedure for finding that option isn't made very clear (to me at least), but the "Menu" button on the remote should lead you through to the correct sequence, shown here -
http://
It's not your TV set - it's your aerial!
Freeview TV channels are transmitted in 'bundles' (called 'multiplexes'), with each bundle on a different frequency. Theoretically you need a different aerial for each of those frequencies because, ideally, the lengths of the elements in your aerial need to be correct in order to 'resonate' with the relevant frequency. Obviously that's not possible, so any aerial is only a 'rough match' to the required frequencies, with some multiplexes being easier to receive than others.
Your aerial used to be able to produce a strong enough signal for your Toshiba set to 'pull in' all of the multiplexes but now it's only working well enough for the set to handle the stronger multiplexes (which is why you've 'lost' all of the channels on the weaker multiplexes). Your Bush set has better 'sensitivity' (i.e. its ability to handle weak signals), so the problem doesn't show up with that set.
So it seems likely that your aerial has been knocked out of alignment by the recent strong winds, reducing the signal strength received by your TV. (Alternatively the signal strength could have been reduced by something as simple as vegetation growing in front of it).
So you need to examine your aerial (and the associated cabling) to see if you can work out where the fault lies. Alternatively, since the signal strength is obviously only just below that which your Toshiba set needs, a simple signal booster (for a tenner from any of the big supermarkets) will almost certainly fix the problem - although you will probably need to do a retune after installing it.
Freeview TV channels are transmitted in 'bundles' (called 'multiplexes'), with each bundle on a different frequency. Theoretically you need a different aerial for each of those frequencies because, ideally, the lengths of the elements in your aerial need to be correct in order to 'resonate' with the relevant frequency. Obviously that's not possible, so any aerial is only a 'rough match' to the required frequencies, with some multiplexes being easier to receive than others.
Your aerial used to be able to produce a strong enough signal for your Toshiba set to 'pull in' all of the multiplexes but now it's only working well enough for the set to handle the stronger multiplexes (which is why you've 'lost' all of the channels on the weaker multiplexes). Your Bush set has better 'sensitivity' (i.e. its ability to handle weak signals), so the problem doesn't show up with that set.
So it seems likely that your aerial has been knocked out of alignment by the recent strong winds, reducing the signal strength received by your TV. (Alternatively the signal strength could have been reduced by something as simple as vegetation growing in front of it).
So you need to examine your aerial (and the associated cabling) to see if you can work out where the fault lies. Alternatively, since the signal strength is obviously only just below that which your Toshiba set needs, a simple signal booster (for a tenner from any of the big supermarkets) will almost certainly fix the problem - although you will probably need to do a retune after installing it.
Thank you everybody as per usual you are all spot on. I did a mix ie retuned for first time, told the programme to delete existing channels and told it to search for channels from all sources. It worked! Hooray. But it is - as surmised a problem with the aerial. I live right on the coast and we have been battered by gales and in addition the sea gulls sit on the aerial!! So as this is a big block we have asked the TV aerial people to take a look. Again thanks.
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