All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Alan Brown: Thanks for your update / explanation regarding aerial being used, and which I will say is a superb ruggedly constructed device that is capable of outperforming much larger pieces of metalwork of the so called "high gain" variety, myself having demonstrated this to a few over the years and is an aerial I use for mobile tests when out on trouble shooting missions.
As far as your remote control is concerned, if you have tried another control then that eliminates the remote being as the cause of the problem, this only leaving the IR pick up device / circuitry in the TV as being suspect, but though what I feel might be happening is that the signal going into the TV is a touch over powerful for its tuner and this is causing the set to partially lock up.
For a test, what I would like you to try is to disconnect the aerials power unit from the mains and then unscrew the "F" connector on the end of the loop link that comes from the aerials pick up elements and goes into the amplifier module, and then likewise unscrew the "F" connector on the amplifier module thats on the end of the cable from the aerials power unit / signal separator, then with the aid of a female "F" coupler join the two "F" connectors together, in other words you are by-passing the amplifier.
Then at the power unit end unscrew the "F" connector on the end of the coax from the aerial and use that as your TV's aerial connection with the aid of a "female F to male coax adaptor", by doing this you making your aerial perform just about the same as the DM log I mentioned minus its "external" amplifier.
Try that and see how the results are.
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Ant B: If the Sky link to the upstairs TV is now working OK and you can now get either Sky or Freeview, then lines referred to on the main TV downstairs has to be caused by something associated with your scart connection, as the Sky boxes modulator is internally tagged onto the analogue circuit in the Sky box and if anything was wrong there it would also appear on the modulators output.
I realise that you have changed the scart lead and which was the correct thing to do as far as eliminating the lead is concerned, but though what I would like you to do is whilst viewing a picture via the lead wiggle the plug slightly from side to side first on the box and then on the TV, this is just to check that there isn't a bad joint on the rear of the scart socket pins, this being something that can happen.
The other point being, as your Sky box is an HD type then it must have an HDMI connection, so does your new TV not also have one? (cant check as model unknown) because if it has then you should use an HDMI connection between the box and the TV and do away with the scart lead.
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Sally: If you are referring to the subtitles that appear at the bottom of the screen then they can be disabled using the "STTL" button on the remote control, this button usually positioned next to the one marked "Text" under the row of coloured buttons (red green yellow blue)
If though you are meaning something else then please clarify.
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D Nielsen: A post code or one from nearby is necessary to be able to answer your question, as only then can the transmitters that cover your area be checked on, as you might have carried out a retune and picked up a Freeview light (PSB only) station, this type of station not transmitting commercial channels and which ITV3 is one of.
To test can you get 5*(30) or Quest(38)? as both these programmes are on the same mux transmitter as ITV3.
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n hobson: Just to add to that already said by Dave Lindsay, have you checked with any of your neighbours to find out if they are having any problems, as by them using the same aerial system as yourself it would save a wealth of explanations as to the possible causes of your problem if they are also experiencing reception difficulties, although should they not be, then what Dave Lindsay has said regarding tuning applies.
Also, with this type of query you should really have provided info on your location (post code or one from nearby) as reception in Whitby (myself being extremely acquaint with) varies quite considerably between both sides of the water, especially anywhere near to the Marina areas that is tucked in under the direct line of the signal from Whitby's relay, and of course well under any signals that might possibly be received from Bilsdale the full service transmitter.
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daz: Fully appreciating that this particular brand can be subject to a range of various problems, but have you tried changing the remote controls batteries? or maybe taking the battery cover off and rolling the batteries around for the purpose of cleaning their contacts.
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rosalyn thew: Although the Morpeth relay is very low powered its still possible to suffer from slight signal overloading problems when located at just over 1 mile away from the transmitter, and the fact that the other TV's work OK could just be because their tuners aren't quite so sensitive hence can cope with that type of problem.
You haven't mentioned anything about your aerial, but if you can borrow a set top aerial then you should try a test using that, although when you mention you are using two other TV's then is a powered splitter being used? if it is then try by-passing it whereby the aerial going into it is coupled directly onto the problem TV's aerial lead.
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Alan Brown: Well although some types of electronic equipment can be sensitive to being used on mains supplies from these less costly and more commonly used modified sine wave inverters, these Sterling devices are not in that category by being pure sine wave, and so provided your aerial or lead from is not positioned anywhere near the inverters casing I don't really feel that the inverter is connected in any way with your problem.
The problem with digital reception is that stability of signal levels is far more important than it was with analogue signals and many TV's / boxes will start to operate in an erratic fashion (picture freezing / pixilation etc) when the signal being received is slightly over the top strength wise, of course in a fixed situation that is easily cured by the addition of a simple attenuator in line with the aerial socket, but in mobile situations where the signal might be poor at some locations and excessive at others, especially if an amplified aerial is involved, the standard fixed type of attenuator is not suitable and so one of the variable variety (about £5.00 or so) is more appropriate, and I feel that this would be a good addition to your kit.
The point being, that when you connect moving the aerial with curing the problem its simply because that the action of moving the aerial is varying the signal strength of the signal being received thereby allowing the tuner to unlock, this why I suggest that if you are in a location where you experience this type of problem bypass the aerials amplifier and I am reasonably sure that the problem will vanish, unless that is your TV has a defective tuner.
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Simon J Bolton: Although it does appear as though your Toshiba TV's tuner has failed you should try a manual tune test, this done by going into the installation menu and selecting "manual search", then select "digital" by using the <-> (left/right arrows) followed by selecting "channel" and once again using <-> to obtain the channel required (Ch53 BBC) followed by pressing OK to start search.
If no results are obtained try the same test again but using Ch62(ITV3 etc) if still nothing is found then this would suggest that the tuner is defective.
By the way, all that's been said is on the assumption that no booster is being used on the aerial system, as if it is then it must be by-passed for the test just in case your signal is excessively high, as that can likewise result in nothing being received because of tuner blocking.
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Sunday 7 October 2012 11:33PM
Mclauchlan: Can you receive either Quest(38) or 5*(30) if not then you could be receiving from a Freeview light transmitter that does not transmit commercial channels, or alternatively that your retune has just not picked up the SDN mux and so you should carry out another retune.
A post code or one from nearby is necessary to check this out.