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TV tuning problem

29 posts in this topic

Posted

Hi all, I have this minor problem that is majorly doing my head in:

I now have this massive, old-style TV sitting in my living room (thanks to my folks, who now have a lovely flatscreen).

Tuning it is really easy... or so I thought. I tuned a few channels (one by one, so ever so slightly tedious), and then suddenly, when I wanted to tune another one, there was this massively loud static noise coming from all the channels that were found. So I stopped my tuning mission and left it at that. Thinking the noise would just go away as mysteriously as it had arrived.

No such thing - this evening, I thought I'd give it a shot again, but there it was again, that loud static noise. I've now got ten channels tuned that are perfect, but I can't tune the rest!

Any experts here with any suggestions? Would be much appreciated.

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Posted

Poisoned chalice. Somewhere else on TT I bemoan people who keep giving me their rubbish... perhaps you could get your dad round on the problem?

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Posted

er... he ain't anywhere near here... would if I could!

PS: one man's rubbish is another (wo)man's treasure - I have no problem with hand-me-downs, on the contrary.

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Posted

... I am also not proud, but when things are already kaputt...

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Posted

Just how "old-style" is your old-style TV? Does it have an automatic tuning function? What is the input (cable, satellite, rabbit ears)? Might the input be digital and if so, can your TV decode it (that is, does it have a DVB-C or DVB-T tuner for digital cable or digital terrestrial broadcasting, respectively)?

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Posted

It's not kaputt! I'm just clueless - big difference!

Input is cable (comes as a package with the rent, so not as a matter of choice or anything).

Sorry, but what's an automatic tuning function? It does do a channel search, but I have to tune each channel one-by-one. You know, select an empty one, do the channel search, select the channel I want to be saved, and save it.

That worked fine for the 10 channels, but now there is this major static noise when I do the channel search, and it would save the channel WITH the static noise included. So I somehow have to get rid of it before I continue.

I'm sure there is a really simple explanation, but I just wish I knew what it was!

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Posted

hoover it ,take the back off and hoover all the crap off the electronics that normaly does the trick

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Posted

Hm, I did jiggle with the cable, thinking it might have come lose or something. Guess I might try the hoovering.

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Posted

trust me on this I had a Grundig that lasted 20 years (monster TV)everytime the sound went funny I hoovered the bugger, that tv just would not die which was a pain cos I wanted to buy a new Heidelberg flat screen

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Posted

Unplug it before you try that though!

and don't touch any capacitors and stuff just put the plastic hoover bit in there

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Posted

no such thing in existence any longer! Flatrate per household as of January 1st.

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Posted

no joy just yet - couldn't take the back off, you'd need a specialist tool to disconnect it from the front. So my hoovering can't have been terribly effective. And the static is still there, obviously.

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Posted

What is the make and model of the TV?

Do you get a picture with the static noise, or do you get visual static as well?

Most semi-modern TVs have an auto-setup mode that tunes all the available channels automatically. That was the case with our last big Sony tube TV, which we bought in 1994 (and finally retired last year), so that feature has been around for quite some time now. I suggest you check your setup menu again to see if there's a likely candidate among the menu items.

I also asked about the tuner for three reasons: 1) If it's an old model without 100% solid state components, the tuner can fade and become less effective with age; 2) Cable TV bands have evolved and grown over the years, which means you might not be able to get all the relevant frequency bands on your TV; and 3) You almost certainly don't have a tuner for digital cable, which is what most cable companies are concentrating on nowadays.

It just so happens that I have a spare outboard digital TV tuner - the Smart MX83 - which I just took out of our setup, after replacing our outdated Panasonic DVD recorder (which suffered from the degraded receiver performance I described above) with a new Panasonic Blu-ray recorder that my wife got for Christmas. In addition to allowing you to receive the digital channels - all the public broadcasting stations are free over cable, even if you don't have a digital cable package - it also acts as a signal booster for the analog signals. I don't have any more use for it and I'd be happy to mail it to you for the cost of postage. Your TV has to have a SCART input for you to use it, however. I'll throw in the SCART cable, too, since we have many more of those than we'll ever need.

A SCART input looks like this:

post-47703-13573326242916.jpg

PM me if you're interested.

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Posted

Well, thanks, El Jeffo, but it actually has been working - I was tuning in the channels fine until this static noise appeared. I can get them all - the only thing is that right now, if I save a channel, I'll be stuck with that loud hum.

It was fine for those 10 channels I tuned - I would just really like to find out what has 'changed' all of a sudden!

It's an old Loewe, btw. Not particularly common, I'd assume.

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Posted

If your "folks" gave you their old TV can we assume it is an analogue TV from Ireland and you are trying to receive analogue cable TV?

IF so I have a theory...

The Irish analogue TV system uses the PAL I broadcast TV standard. Germany uses Pal B/G. They are slightly different:

An analogue TV receiver picks up two different radio signals for each channel - The picture is on one radio frequency and the sound is on a another radio frequency. The two frequencies are a fixed distance apart.

An Irish (PAL I) analogue TV will tune in a TV picture and expect to find the sound signal 6MHz away. In Germany (PAL B/G) the sound will actually be 5.5MHz away. So the receiver in an Irish analogue TV can't quite tune into the German sound signal properly.

No radio receiver is perfect so sometimes it might find the sound, sometimes not. Perhaps the "saved" channel frequencies are a little different to those discovered by a search. Even the temperature of the receiver might play a part. Whatever happened, an Irish analogue TV will always struggle to receive sound here.

One way to fix this problem was to feed the incoming German signal into a German video recorder and attach that to a video input on the TV (not the aerial). You'd tune in the channels on the VCR.

El Jeffo's TV tuner will do something similar and may even give you additional channels.

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Posted

I think she meant the German side of the family, somehow I can't imagine someone transporting one of the old, enormous TVs all the way from Ireland to Hamburg.

@Gillian L

I suppose you have already tried googling in German for something like "Rauschen bei Kanaleinstellung Fernseher"?

  • http://forum.digitalfernsehen.de/forum/hilfe-alles-kaputt/163278-rauschen-nur-scart-eingaengen-hilfe.html
    http://www.gutefrage.net/frage/alle-sender-rauschen-auf-einmal

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Posted

no joy just yet - couldn't take the back off, you'd need a specialist tool to disconnect it from the front.

post-29385-13573863707251.jpg

:ph34r:

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Posted

Enter "tv humming" (without the quotation marks shown here) into Google and see if any ideas help in your situation

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Posted

err, timezoner, I'm not all too bad at DIY - I think if I say that it's a 'specialist' tool, it's not something to be found in your toolbox either...

But thanks anyway - guys, the problem seems to have been identified!

I looked at the first German site you linked (PandaMunich - thanks so much!), and thought, scart cable? Ain't got nothing to do with that. But the guy in question solved his problem by just selecting another channel. So I thought, right, I've a channel saved on nbrs 1-10, and I'm trying to save something on nbr 11 - so what happens if I forget about 11 and try to save it to nbr 12 instead?

Bingo! The noise is just on that one channel (I'm using the wrong word, I don't mean the TV channel / station, I mean the place where it's to be saved on the TV, if you know what I'm trying to say).

Who'd have thought it could be so easy! Cheers everybody.

PS: And no, I did NOT bring this monstrosity over from Ireland!

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