Ghosting of other channels coming through Humax picture
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Having just bought a new LCD tv, im now noticing a ghosting effect where the Digital tv channel the TV was on before switching to the Humax feed, can be seen scrolling underneath the picture the Humax is outputting.
On my old CRT tv i had noticing a simliar effect when watching dvd's. (My dvd player is connected via scart to the tv in the following way: DVD ---> Humax ---> TV).
I now cant see any ghosting when watching dvd's (dvd connected in the same fashion), but can on the Humax picture. This is actually more annoying as i spend more time watching the Humax than dvd's!
Ive found a workaround which is to tune the Digital signal on the tv to channel 501 (BBC HD which therefore produces a blank screen) before turning to the Humax feed, but surely there must be a way to prevent this scart intereferance properly??
Any help would be appreciated.
(in case it makes any difference my tv is a Toshiba 32WLT66)
On my old CRT tv i had noticing a simliar effect when watching dvd's. (My dvd player is connected via scart to the tv in the following way: DVD ---> Humax ---> TV).
I now cant see any ghosting when watching dvd's (dvd connected in the same fashion), but can on the Humax picture. This is actually more annoying as i spend more time watching the Humax than dvd's!
Ive found a workaround which is to tune the Digital signal on the tv to channel 501 (BBC HD which therefore produces a blank screen) before turning to the Humax feed, but surely there must be a way to prevent this scart intereferance properly??
Any help would be appreciated.
(in case it makes any difference my tv is a Toshiba 32WLT66)
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Comments
So would a really expensive scart lead help with this problem effectively?
Would anyone actually recommend those scart leads in excess of £40? Are they really worth the money, and do you see a noticeable decrease in picture distortion?
There are many sellers on Ebay (just check the feedback), or take a look at a local independant shop - steer clear of the High Street chains, as they will want to sell you a 1m cable for £50.
I don't know because I haven't tried one. But I was able to reduce the problem by reconnecting cheap leads in a different way. Maybe if I also switched them for expensive leads it would further reduce or eliminate the problem. Maybe not. But, personally, I don't think the problem is bad enough (either before or after I partly fixed it) to justify spending 40 quid on a fancy lead that may not fix the problem.
If you don't know which pin is 19, you can find out here - http://www.digitalspy.co.uk/article/ds12610.html
What about for audio interference?
Thanks! I thought so looking at the diagram, but wasn't ready to mangle a my spare scart lead without checking first!
Cliff
I have never snipped the scart leads and I have tried loads.
The way round it I use is to switch to channel 0 (dvd recorder) on the tv first, which with the recorder off gives a black no signal picture. Then I select the AV input for my toppy the interference is then gone.
It works very well.
I do something very similar - just select an empty channel.
Yes you're right that's why I use the dvd recorder channel with the unit off...
Just to check...even if this does not cure the problem, is there any chance it can cause extra problems? Or is pin 19 on the tv end of a scart useless?
Im guessing it has it at both ends because scart-to-scart cables can be used either way round. By breaking pin 19 im guessing ill be restricting the cable to a specific orientation...where the end with pin 19 missing always needs to be plugged into the tv?
Thanks for the advice
If you'd rather keep the pin intact, then you can always open the lead up and pull the pin through (assuming it doesn't have a moulded plug). Just twist the round black thing clockwise until it comes loose then unclip the casing. You should be able to figure it out from there.
Thats the same trick ive been using, but id rather get a solution which doesnt require the pre-thinking of selecting a certain channel before turning on the Humax...im lazy!! Hopefully this pin 19 thing will do the job.
Finnally, going back to the quality of scart cables. Can anyone who's recently upgraded to a new HD ready LCD tv and is using it with the Humax give any advice about whether a half-decent gold scart lead produced a better image than a bog standard £5 cable? If they do i think it would be a worthwhile investment to get a £20 one.
Thanks
Cliff
I also snipped pin 19 while I was there because I do get picture interference, though only when the TV was last switched to an untuned channel. But this did not work! And I don't think it will for me, because I also switched to a channel for the AV connectors on the front of the TV (with nothing plugged in), and the picture still showed through. But this was never really a problem for me anyway.
Cliff
Hi Cliff
No it's a DVD recorder not a dvd player so has a modulated RF signal too.
As I have 2 RGB devices (Toppy and DVD recorder) the DVD recorder plugs into the Toppy and then to the TV.
I knew my TV had this AV problem so I made sure I had a Blank channel. It used to be the video but that is no longer plugged in via RF.
Also I can see the transmitter from my road so it caused various problems. At one point we had too much signal which caused all sorts of problems.
If I select a 'white noise' channel you can clearly see the noise on the AV input. My dad used to work in the industry and agreed it's probably poor AV inputs on the TV with the signal leaking through.
Hope that makes sense.
Phil
I used to have a Panasonic ondigital box, and when in stand by it would output a black screen with no audio via RF (or mono digital via RF when on). I always kept the TV on this channel so as to avoid interference while watching digital TV / DVD / video.
Cliff
err - because no retailer would be happy with the volume of returns from people who can't get (acceptable) digital reception - and because it makes little sense to remove something from sets when other EU countries are further from "switch off".....
Cliff