Digital TV glitches

Hi all,

Since I bought a flat-screen digital tv, I've noticed that occasionally
the sound and vision are momentarily interrupted when in digital mode.
I had always assumed that this was the compressor on my old fridge
cutting in and out and that because it was old, it was inadequately
suppressed.

I've recently replaced the fridge (and the old freezer) with a new
fridge-freezer, but the interruption hasn't gone away like I thought it
would. I've been racking my brains trying to think of something else
that could be causing it, but have come up with nothing.

Any ideas please, anybody?

Bruce

"Bruce Hall" wrote in message
oups.com...
Hi all,

Since I bought a flat-screen digital tv, I've noticed that occasionally
the sound and vision are momentarily interrupted when in digital mode.
I had always assumed that this was the compressor on my old fridge
cutting in and out and that because it was old, it was inadequately
suppressed.

I've recently replaced the fridge (and the old freezer) with a new
fridge-freezer, but the interruption hasn't gone away like I thought it
would. I've been racking my brains trying to think of something else
that could be causing it, but have come up with nothing.

Any ideas please, anybody?

Bruce

What model? Where are you and what sort of aerial and cable do you have?
If you don't know, describe it. Also, any signal strength indicators on the
set that you can quote? Sounds like you have a marginal signal and your TVs
doing the best it can but can't always manage to pull a signal out of the
ether.

Paul DS

On 21 Sep 2006 08:58:41 -0700, "Bruce Hall"
wrote:

Since I bought a flat-screen digital tv, I've noticed that occasionally
the sound and vision are momentarily interrupted when in digital mode.
I had always assumed that this was the compressor on my old fridge
cutting in and out and that because it was old, it was inadequately
suppressed.

I've recently replaced the fridge (and the old freezer) with a new
fridge-freezer, but the interruption hasn't gone away like I thought it
would. I've been racking my brains trying to think of something else
that could be causing it, but have come up with nothing.

Any ideas please, anybody?

Central heating? Washing machine? Dish washer?Power shower? Next
door's fridge? The light switch in my kitchen sometimes causes a blip
on my set.
--
Dave
Sheffield, England, UK

http://www.gnudawn.co.uk/

In article .com,
Bruce Hall wrote:
Hi all,

Since I bought a flat-screen digital tv, I've noticed that occasionally
the sound and vision are momentarily interrupted when in digital mode.
I had always assumed that this was the compressor on my old fridge
cutting in and out and that because it was old, it was inadequately
suppressed.

I've recently replaced the fridge (and the old freezer) with a new
fridge-freezer, but the interruption hasn't gone away like I thought it
would. I've been racking my brains trying to think of something else
that could be causing it, but have come up with nothing.

Any ideas please, anybody?

a passing motorcycle? The central heating/ho****er boiler firing up?
Something next door?

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11

On 21 Sep 2006 08:58:41 -0700, "Bruce Hall"
wrote:

Any ideas please, anybody?

My gas boiler does it for me sometimes, as do some very occasional
motorbikes outside and a neighbours lawnmower.
--
Andrew, contact via http://interpleb.googlepages.com
Help make Usenet a better place: English is read downwards,
please don't top post. Trim replies to quote only relevant text.
Check groups.google.com before asking an obvious question.

Any ideas please, anybody?

Bruce


A mobile phone in the same room or even in an adjacent room?

That's about the only thing that significantly upsets our system (which has
an old aerial/cable installation.)

Bear in mind that a phone transmits regularly even when not in use.

Paul

Central heating maybe
On 21 Sep 2006 08:58:41 -0700, "Bruce Hall"
wrote:

Hi all,

Since I bought a flat-screen digital tv, I've noticed that occasionally
the sound and vision are momentarily interrupted when in digital mode.
I had always assumed that this was the compressor on my old fridge
cutting in and out and that because it was old, it was inadequately
suppressed.

I've recently replaced the fridge (and the old freezer) with a new
fridge-freezer, but the interruption hasn't gone away like I thought it
would. I've been racking my brains trying to think of something else
that could be causing it, but have come up with nothing.

Any ideas please, anybody?

Bruce

It could just be that your signal strength or SNR is on the lower limit.
Intermittent freezes are a typical symptom of an inadequate aerial or
downlead.

Thack

Staiger wrote:
It could just be that your signal strength or SNR is on the lower limit.
Intermittent freezes are a typical symptom of an inadequate aerial or
downlead.

Thanks Staiger and all, for your suggestions of what might be causing
it. I don't think that it's a signal strength problem at all, as the
signal strength is at or near 100% for all digital stations receivable
in my area.

The thing is, how to stop it? Judging by all your responses, there are
millions of possible causes, but no known cure!

Cheers

Bruce

Bruce Hall wrote:
Staiger wrote:
It could just be that your signal strength or SNR is on the lower
limit. Intermittent freezes are a typical symptom of an inadequate
aerial or downlead.

Thanks Staiger and all, for your suggestions of what might be causing
it. I don't think that it's a signal strength problem at all, as the
signal strength is at or near 100% for all digital stations receivable
in my area.

That figure is clearly meaningless, since it implies the signal cannot be
any stronger. Perhaps your receiver will explode after analogue
switch-off...

The thing is, how to stop it? Judging by all your responses, there are
millions of possible causes, but no known cure!

You want more signal, or less impulse interference, or both. If the
interference is being generated within your home, you could try to ensure
that the interfering appliances are on a different mains circuit. You could
play about with ferrite rings to try to prevent the interference entering
your receiver via the mains lead. If your aerial downlead is cheap "low
loss" coax, you could replace it with CT100 or equivalent. You could check
that there are no links in the chain (aerial wall sockets etc) which might
admit interference, and that the coax connector is attached correctly...