We are having trouble with interference in the form of pixelization and sound breakup. I happens when I run the 12 V exhaust fans in the toilet or shower. I could put up with that but I have just recently bought a re-chargeable 8" fan and this also causes the problem whether its running of any power source (240V / 12V) including when running off the internal battery.
Only the fans cause this, air con and other appliances seem to have no detrimental effect.
It seems the (cheap) 12V motors in bathroom exhaust fans create interference with most TV's using the same 12V system - If you can run the TV on 240V if in caravan park that may relieve the interference.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
Neil,
A cheap way could be the addition of a 1microfarad capacitor added to across the 12v feed to the fans (take care of the polarity if it is an electrolytic & the voltage rating is 20v) - just like we had to fit on the ignition system on cars years ago.
I'd guess the cause of the interference is sparking from the brushes & commutator.
The other option is shorter wash/toilet usages!
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Warren
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If you don't get it done today, there's always tomorrow!
Neil,
A filter on the TV aerial? It might but I'm not certain what is available or at what cost. You'd need a High Pass Filter with the lowest frequency equal to the minimum TV channel.
PeterD might know if you can "wake him up" - he could be on holidays as I haven't seen any posts from him recently.
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Warren
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If you don't get it done today, there's always tomorrow!
Any other options? Would it be possible to shield the motor?
You could always replace the offending fan/motor with a better one. I am a screen addict but I wouldn't bother for a couple of minutes a day.
Yeh. The 2 exhaust fans normally only run for 10 minutes a day. Not a big deal. But the portable battery operated fan for hot weather is the real issue.. Run it for several hours at a time.
It seems the (cheap) 12V motors in bathroom exhaust fans create interference with most TV's using the same 12V system - If you can run the TV on 240V if in caravan park that may relieve the interference.
-- Edited by oldtrack123 on Saturday 19th of January 2019 05:05:38 PM
Does the problem only show up in weak signal areas or all the time ,no matter where located & what way the antenna is pointing.
Have you tried changing the direction of the Antenna so it points towards the nearest tv station. Another option could be a signal booster in the antenna feed line. Another cause could be a faulty coupling lead from arial outlet to TV.
