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Post Info TOPIC: 12 volt fan = bad TV reception


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12 volt fan = bad TV reception


I need some input please.

We have a 12 volt (cigarette plug type) fan, up until recently we didn't have a problem.

About a month ago when we started to use the fan it completely destroyed our TV reception
Same thing happened when plugged into 240 through a transformer.

WE have no problems when using Sat TV, just the antenna
WE have a new type Wynguard antenna.

So far I have tried a filter on the antenna lead and those ring things on the power leads
Nothing helped.

I am thinking new fan but would like to be sure first, maybe it has something to do with antenna.

Would appreciate some thought thanks



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Our cheap pure sine wave inverter affects our Sphere tv and our Panasonic PVR. Definitely looking at VAST very soon.

Aussie Paul. smile



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Gday...

I am DEFINITELY not 'electricity clever' ... in fact quite the opposite cry

However, I never used to watch TV except when on 240v - and that was not very often. However,some years ago, when I first began using my TV on 12V I found that if I turned on the light over the sink (then a halogen globe and later a LED one) near the TV while the TV was operating, either the sound would disappear completely - or sometimes the picture would degrade.

When I checked with an auto elec he checked it out and advised that -

a) the original wire from the battery servicing the 12v socket that came with the van (for TV) and the light over the sink was too small;

b) and if TV and light were on simultaneously there was insufficient current to drive both.

The solution was to run a heavier wire directly from the battery (with inline fuse) to a new, separate 12v socket on the wall for the TV.

Outcome - problem solved ... I have not had any problems since.

Perhaps that is the source of your problem but I would wait for the 'electricity gurus' to respond before you rush out and get another wire/socket installed. hmm

Cheers - John



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rockylizard wrote:

Gday...

I am DEFINITELY not 'electricity clever' ... in fact quite the opposite cry

However, I never used to watch TV except when on 240v - and that was not very often. However,some years ago, when I first began using my TV on 12V I found that if I turned on the light over the sink (then a halogen globe and later a LED one) near the TV while the TV was operating, either the sound would disappear completely - or sometimes the picture would degrade.

When I checked with an auto elec he checked it out and advised that -

a) the original wire from the battery servicing the 12v socket that came with the van (for TV) and the light over the sink was too small;

b) and if TV and light were on simultaneously there was insufficient current to drive both.

The solution was to run a heavier wire directly from the battery (with inline fuse) to a new, separate 12v socket on the wall for the TV.

Outcome - problem solved ... I have not had any problems since.

Perhaps that is the source of your problem but I would wait for the 'electricity gurus' to respond before you rush out and get another wire/socket installed. hmm

Cheers - John


Thanks for that. It could be the problem, hope not, the leads are all behind the walls and it would be a big job 

Gives me a thought tho, there is a big stack of wires under the van I can check out. Same thing happens in both cigarette sockets and one is on 6 mil wire direct to the battery. Maybe it is the lead to the tv socket and booster.



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Gday...

There was no need to access any wiring within the walls.

I selected a position on the wall near the TV and then the cable was brought from the battery, under the van, up through inside a cupboard, through the bench close to the wall and the socket installed there. 

Looks fairly 'standard' and definitely was not a big problem ... or a lengthy job.

Cheers - John



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All good now, I bought a new fan

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I had the same problem when the shower fan was turned on, no signal to tv
new van will have a dedicated wire to tv, so hope that will sort it out
Ken

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Senior Member

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My outlet for the 12v TV, and amplifier for the antenna are in the overhead cupboard above the sink.
In some areas where the TV signal is marginal I can have intermittent problems with the TV

After a long time I worked out if the cupboard door were open the TV was good.
Do not ask my why because I can not figure it out
But I know it works

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DC filter to prevent RFI ?

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Whats out there


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I have the Same Problem with my TV. I have found the LED Lights are the Problem. apparently its the little switchmode Transformers in the LED's that adjust the Voltage to be correct for the LED that produce a signal that interferes with TV Antenna signals. When I switch the LED's off Bingo TV works fine. I guess that a any appliance may have a Switchmode Transformer may be an Issue. 

Hope it Helps.

Lauri



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Lauri


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Yep better RFI filter or better transformer ..

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Whats out there


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Or use 12V single voltage LED inserts, not multi voltage led inserts.

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