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765 posts

Ultimate Geek
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Topic # 126907 23-Jul-2013 16:07
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Hi,

I'm seeking some advice on "what next" with respect to tracking down and hopefully fixing whatever is causing intermittent visual/audio glitches in my UHF freeview reception.

We have a proper UHF aerial on the roof, pointing at Mt KauKau (Wellington, obviously) with direct line of sight (I can see Mt KauKau out my window); and yesterday I replaced the hodge-podge antenna-cables-with-joins-in-them with a proper single run of UHF coaxial cable (being unable to go into the office due to earthquakes does have it's advantage), and replaced the connectors at both ends.  New cable has no shorts - checked with multimeter.  UHF aerial on roof is about 18 months old, I guess.

The problem is most noticable on TV1 (because that's what we mostly watch in "real time" at 6pm) when my TV (a 2 year old Samsung) is being watched "directly" (i.e. using the DTV tuner on the TV), and appears like either visual or audio "noise" (usually both) for a second or so; this occurs perhaps at 5 to 10 minute intervals, lasts a couple of seconds at the most.  However, normally the picture/sound is fine; and the TV itself generally reports signal strength 100 and error rate 0 on TV1 (and on almost all channels, in fact).

If I watch TV using my PVR as the tuner (i.e. via the HDMI signal input on the TV), no sign of the problem.  TV firmware is up to date (or so it claims).

So, to me, this may indicate a potential problem with the TV itself. Does anyone else have a Samsung doing similar things?  How, if at all, could I go about trying to diagnose that further? 

As an aside, a friend said yesterday he had issues on his TV as "the TV1 signal was too strong" and he mentioned something about a in-line filter to reduce the strength of TV1.  That sounded a bit weird to me (and also potentially more of an "analogue" issue than a digital one...); but is that even possible?

At the end of the day, I need to do something to reduce the good old "WAF" (Wife Annoyance Factor...)

Thanks!

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765 posts

Ultimate Geek
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  Reply # 864395 23-Jul-2013 16:13
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Have you got something controlled by a thermostat that is clicking on and off every ten minutes or so? Heater? Fridge? Solar h/w pump?




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765 posts

Ultimate Geek
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  Reply # 864423 23-Jul-2013 16:27
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turb: Have you got something controlled by a thermostat that is clicking on and off every ten minutes or so? Heater? Fridge? Solar h/w pump?


It's possible; there is a heatpump physically nearby - but electrically, it's on a separate circuit at the switchboard.  Can't say I've noticed any correlation between the two things though; and the heat pump has been there about the same length of time as the TV, whereas my problem is relatively recent (relatively, as in "the last few months").

Oh, and whilst replacing the coax didn't eliminate the issue, it has improved.


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