I am also having same problem with a 12 volt fan
its some thing to do with interference to the aerial connections, i have no trouble watching dvd or a movie off a usb stick
I have no idea .but my son in law is making something to try and help it , will let you know when it arrives
I ended up wiring my 12v Caframo fan directly to batteries with a in-line fuse. Works great and is independent to everything else. I used a heavier wire and wired directky into the fan. I ran the cable under the van then up where the fan is. Can't see any cables.
Might be a solution to both your problems.
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we have 3 small 12 volt 3 blade ceiling vans in our van and have no issues with the TV reception.
However a lot of our TV viewing is via Foxtel.
Jay&Dee
I have TV reception problems when too many 12v appliances are running, even on mains. The power to the antenna drops badly and reception is rubbish. The LED lights flicker when the water pump kicks in if not running on mains. The exhaust fan also causes problems. I'm currently mapping out what device uses what. Given I've not blown any fuses, I'm not drawing too much power for fuses but too much for the house battery (110AH) so I have no idea what's going on.
Is the cheap 12v fan using a lot more power than the new one?
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I have TV reception problems when too many 12v appliances are running, even on mains. The power to the antenna drops badly and reception is rubbish. The LED lights flicker when the water pump kicks in if not running on mains. The exhaust fan also causes problems. I'm currently mapping out what device uses what. Given I've not blown any fuses, I'm not drawing too much power for fuses but too much for the house battery (110AH) so I have no idea what's going on.
Is the cheap 12v fan using a lot more power than the new one?
There is an electronics fix to this. Go to one of the component stores and buy a point one micro farad capacitor (non polarised) solder it across the positive and negative terminals of the fan and your interference should vanish.
To those who think this is dangerous, capacitors do not conduct DC. The interference AC is shorted away.
Phil
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There is an electronics fix to this. Go to one of the component stores and buy a point one micro farad capacitor (non polarised) solder it across the positive and negative terminals of the fan and your interference should vanish.
To those who think this is dangerous, capacitors do not conduct DC. The interference AC is shorted away.
Phil
Ok, nice to know Phil. Is there anything I can put on my cheap 300w inverter to stop it affecting the 12v tv signal and the 240v PVR?
There is an electronics fix to this. Go to one of the component stores and buy a point one micro farad capacitor (non polarised) solder it across the positive and negative terminals of the fan and your interference should vanish.
To those who think this is dangerous, capacitors do not conduct DC. The interference AC is shorted away.
Phil
Ok, nice to know Phil. Is there anything I can put on my cheap 300w inverter to stop it affecting the 12v tv signal and the 240v PVR?
Aussie Paul.
I am going to try some clip on ferrite beads on the ac outlet to the pvr.
Probably not a good idea to put a capacitor on AC Paul, but I like the idea of the ferrite beads, the inverter may be a modified sine wave and causing a stir as well.
Keep me posted please mate.
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Ex RAAF, now retired. EX Electrician/Teacher.
Homebase is Murray Bridge Tourist Park (in a cabin). New Horse.. 2020 Ford Everest Titanium, Jayco swan for touring.
Probably not a good idea to put a capacitor on AC Paul, but I like the idea of the ferrite beads, the inverter may be a modified sine wave and causing a stir as well.
Keep me posted please mate.
It is a cheapy Phil but advertised as pure sine wave. If I dig through some of my amature radio gear there should be a CRO that I could use to have a look at the wave form.
