electrical intrference

[sparkyork]

hi guys, ive jjst been watching telly and noticed my lcd screen becoming blotchy and loosing signal etc. it appears to be doing it in sinc with some bloke a couple of doors away who's using some sort of high speed tool, like a dremel or something, why would a neighbours apparatus effect my telly?? just curious before i go round and pull his main fuse! lol

 

[Bane]

Might sound stupid but is it windy outside?

 

[sparkyork]

no not really quite calm really (perfect fishing weather!)

i have thought about it abit more.... if you got a conumer unit supplying 10 sockets through a radial circuit then you can get interference on equipment on that circuit that will effect everything else so... if you got a subatation with either a raial or ring circuit supplying say 10 houses then would this be the same scenario just on a larger scale??

 

[Bane]

*Watches the tumbleweed roll by*

"?"

 

[Kaizer]

Re: electrical interference

I assume that your TV is receiving terrestrial signals in which case airborne rather than mainsborne interference could be responsible for blotchiness on your screen particularly if your neighbours power tool is anywhere forward of your aerial.

Power tools are usually supressed to a certain extent but conditions can develop where the supression components are unable to cope adequately.

I have tried to provide a simplified possible explanation to what can be quite an interesting problem.

 

[rumrunner]

Had it once when i was using a cheap arc welder,neibours tv got interference ,mine was ok

 

[Kaizer]

Had it once when i was using a cheap arc welder,neibours tv got interference ,mine was ok

Exactly so, if sparks are being produced, then expect interference!

 

[ian.settle1]

Exactly so, if sparks are being produced, then expect interference!

Heard it all before but this a new for the term making love

 

[sparkdog]

Sparks and ARCKs produce radio frequencies due to the capacitance and inductance of the cables which causes the interferewnce.I think Mr Marconi's first transmitters were spark generator types.But if the screen is permanently blotchy it could be the screen gone duff,if its interference it would come and go.Regards,Sparkdog.

 

[Bane]

Mains too close to co-axial?

 

[sparkyork]

thanks for comments all, its defo something that causes it only when someone is using some sort of sh&t equipment, tv is not broken, and coax not to close to mains.

 

[heathelect]

Hiya a lad across the road from me used to have a 50cc sports moped and that always interfered with our tv when he passed

 

[sparkyork]

yeah i get that as well when they fly by at 33mph!

 

[heathelect]

yeah i get that as well when they fly by at 33mph!

wow 33mph thats fast

 

[simonatlondon]

Hi sparky york. Just as kaizer explained, the suppression components in his tool could be knackered. These are supposed to stop most of the radio frequency noise, which is created by an electrical motor, when switched on.

When this bloke is using his router, the rf noise from his router is obviously interfering with the broadcast signals, be they sky or freeview. If its freeview, you could put a signal amplifier somewhere along the co ax. If its sky, you would need to get somthing a little more specialist from triax or labgear.

Hope it works out. Imagine your lovely deserved sunday afternoon relaxing and watching the F1. Mr woodworker hobbyist comes out to play with his router...