Trace Posted September 16, 2020 Report Share Posted September 16, 2020 Looking to replace my TV which is currently 12volt, do I need 12volt or will any TV do. Link to comment Share on other sites More sharing options...
Jen-in-Wellies Posted September 16, 2020 Report Share Posted September 16, 2020 (edited) Welcome to the forum. Do you have 240V pure sine wave available on board? Edited September 16, 2020 by Jen-in-Wellies Link to comment Share on other sites More sharing options...
beerbeerbeerbeerbeer Posted September 16, 2020 Report Share Posted September 16, 2020 (It’s been nearly an hour and no one has remarked on the apostrophe. Is Athy asleep?) I think the TV has to have a 12v option. dunno Link to comment Share on other sites More sharing options...
nbfiresprite Posted September 16, 2020 Report Share Posted September 16, 2020 You can always not bother with replacing the Gogglebox and go and do something less boring instead. 2 Link to comment Share on other sites More sharing options...
LadyG Posted September 16, 2020 Report Share Posted September 16, 2020 (edited) Refering to the subject of televisions, perhaps? I inherited a smart TV, so far, it has done absolutely nothing. Edited September 16, 2020 by LadyG Link to comment Share on other sites More sharing options...
Nightwatch Posted September 16, 2020 Report Share Posted September 16, 2020 We have a telly that is both 12v and 240v. We have created a choice. Link to comment Share on other sites More sharing options...
LadyG Posted September 16, 2020 Report Share Posted September 16, 2020 5 minutes ago, Nightwatch said: We have a telly that is both 12v and 240v. We have created a choice. Decisions, decisions, you have created a perfect storm Link to comment Share on other sites More sharing options...
beerbeerbeerbeerbeer Posted September 16, 2020 Report Share Posted September 16, 2020 I too have a Tv which is 12v and 240v plus an iPad upon which I watch iplayer I have created a further choice Link to comment Share on other sites More sharing options...
LadyG Posted September 16, 2020 Report Share Posted September 16, 2020 (edited) 4 minutes ago, Goliath said: I too have a Tv which is 12v and 240v plus an iPad upon which I watch iplayer I have created a further choice I have two tablets and two mifi's ..... Not sure if that creates choice or chaos, they both seem to be imperfect. My phone also has some irregular imput Edited September 16, 2020 by LadyG Link to comment Share on other sites More sharing options...
Cheshire cat Posted September 16, 2020 Report Share Posted September 16, 2020 Someone on here offered an opinion that better decoders were fitted to 240 volt tv so I took them at their word and bought a 240 Volt LG TV. With an omnimax aerial attached to a signal booster it has never failed to find 100+ tv stations. Link to comment Share on other sites More sharing options...
beerbeerbeerbeerbeer Posted September 16, 2020 Report Share Posted September 16, 2020 6 minutes ago, LadyG said: I have two tablets and two mifi's ..... Not sure if that creates choice or chaos, they both seem to be imperfect. My phone also has some irregular imput You win. Just a shame there’s never owt on TV to make the hassle worth while. Link to comment Share on other sites More sharing options...
Richard10002 Posted September 16, 2020 Report Share Posted September 16, 2020 9 minutes ago, Cheshire cat said: Someone on here offered an opinion that better decoders were fitted to 240 volt tv so I took them at their word and bought a 240 Volt LG TV. With an omnimax aerial attached to a signal booster it has never failed to find 100+ tv stations. You might find that the power adapter provides the TV with 19V DC. At least that's what I found with a 24" LG I owned for a while. Also saw a lot of bigger Sony TVs, (up to 40" or so), an adapter to convert 240V AC to 19V DC. Link to comment Share on other sites More sharing options...
Popular Post TheBiscuits Posted September 16, 2020 Popular Post Report Share Posted September 16, 2020 14 minutes ago, LadyG said: My phone also has some irregular imput Yeah, we have noticed! Sorry, couldn't resist. 1 4 Link to comment Share on other sites More sharing options...
Dr Bob Posted September 16, 2020 Report Share Posted September 16, 2020 41 minutes ago, LadyG said: I have two tablets I took 3 today. One was a vitamin D tablet and the other two were echinaecia. Stops colds you know! Don't tell Donald. 43 minutes ago, LadyG said: ............ also has some irregular imput .......better than irregular output!? Link to comment Share on other sites More sharing options...
Tracy D'arth Posted September 16, 2020 Report Share Posted September 16, 2020 Many mains TVs are really 12v ones and include an adaptor box to work off mains. Our Bush is like that. Its not too easy to find out which models are like this, I went into Argos and they were very good, opened a few boxes to discover if they worked on 12v, it doesn't say on the outside of the box. Then you can get a 12v stabilised adaptor to run it safely off the batteries when the alternator is pumping out 14 + volts. Link to comment Share on other sites More sharing options...
Richard10002 Posted September 16, 2020 Report Share Posted September 16, 2020 2 minutes ago, Tracy D'arth said: Many mains TVs are really 12v ones and include an adaptor box to work off mains. Our Bush is like that. Its not too easy to find out which models are like this, I went into Argos and they were very good, opened a few boxes to discover if they worked on 12v, it doesn't say on the outside of the box. Then you can get a 12v stabilised adaptor to run it safely off the batteries when the alternator is pumping out 14 + volts. If you go into John Lewis, you can see the back of most of the TVs they sell. You can quickly see whether the input cable is DC or AC then, if it's DC, you can get a bit closer and see the voltage. Link to comment Share on other sites More sharing options...
WotEver Posted September 16, 2020 Report Share Posted September 16, 2020 1 minute ago, Richard10002 said: If you go into John Lewis, you can see the back of most of the TVs they sell. You can quickly see whether the input cable is DC or AC then, if it's DC, you can get a bit closer and see the voltage. It doesn’t actually matter that much what the D.C. voltage is. You can get 12V adaptors that supply all sorts of voltages. 1 Link to comment Share on other sites More sharing options...
David Mack Posted September 16, 2020 Report Share Posted September 16, 2020 1 hour ago, nbfiresprite said: You can always not bother with replacing the Gogglebox and go and do something less boring instead. 1 Link to comment Share on other sites More sharing options...
Chewbacka Posted September 16, 2020 Report Share Posted September 16, 2020 52 minutes ago, WotEver said: It doesn’t actually matter that much what the D.C. voltage is. You can get 12V adaptors that supply all sorts of voltages. Even 220v ? 1 Link to comment Share on other sites More sharing options...
blackrose Posted September 17, 2020 Report Share Posted September 17, 2020 (edited) 7 hours ago, Jen-in-Wellies said: Welcome to the forum. Do you have 240V pure sine wave available on board? You don't necessarily need a pure sine wave inverter. Mine is semi-sine wave and the TV works fine. Edited September 17, 2020 by blackrose Link to comment Share on other sites More sharing options...
ditchcrawler Posted September 17, 2020 Report Share Posted September 17, 2020 6 hours ago, blackrose said: You don't necessarily need a pure sine wave inverter. Mine is semi-sine wave and the TV works fine. But some hum, its a bit late when you have bought it to find the set up doesnt work Link to comment Share on other sites More sharing options...
Jen-in-Wellies Posted September 17, 2020 Report Share Posted September 17, 2020 (edited) 1 hour ago, ditchcrawler said: But some hum, its a bit late when you have bought it to find the set up doesnt work This is why I said pure sine wave. I get hum over the speakers when I run things from the cheapo emergency backup inverter the couple of times when the posh Victron throws a tantrum. There are higher frequency harmonics in the modified sine wave that can get through to the speakers sometimes. Jen Edited September 17, 2020 by Jen-in-Wellies 1 1 Link to comment Share on other sites More sharing options...
WotEver Posted September 17, 2020 Report Share Posted September 17, 2020 5 hours ago, Jen-in-Wellies said: There are higher frequency harmonics in the modified sine wave that can get through to the speakers sometimes. Yep. If you draw a sine wave then add the second harmonic over the top, then the third, and keep going... you get a square wave Link to comment Share on other sites More sharing options...
Scholar Gypsy Posted September 18, 2020 Report Share Posted September 18, 2020 (edited) 17 hours ago, WotEver said: Yep. If you draw a sine wave then add the second harmonic over the top, then the third, and keep going... you get a square wave Indeed, you can get any periodic waveform you like (eg square) by adding harmonics at the right amplitudes. Fourier series/transform theory, which I have not quite forgotten. Edited September 18, 2020 by Scholar Gypsy Link to comment Share on other sites More sharing options...
Movin' on Posted September 18, 2020 Report Share Posted September 18, 2020 to get this back on track - Avtex would be my go to as good picture and sound and they also cope well with knocks and falling over if bumped in locks etc Link to comment Share on other sites More sharing options...
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