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<blockquote data-quote="joddle" data-source="post: 919190" data-attributes="member: 247983"><p>But are the receivers the same on the lost feed to the ones on the other feeds?&nbsp; - if they are not it could be that some are better than others at insulating against spikes. If they are the same then that rules out receiver issues and means something is going high in just the one house (or at least higher enough to do damage). I can only think that voltage overload would pop the LNB so something a bit more than 15v was going up the cable. I guess the spike must have been at least double the wokring voltage to do any damage as there must be a fair safety margin built into the LNB - yet the voltage was not so high it also took out the other feeds - for which I suppose a much higher pulse would be required, perhaps hundreds of volts or more!&nbsp; So what could cause this? - my gusess is mains fluctuation - as stated before we have had 400v pop through our wires at sometime (an exception I know) but we do get the occasional brightening of lights -possibly due to unevan loading somewhere else on the three phases in our street or close by.&nbsp; If this is happening on one propery and not the other then maybe pulses along with bad earthing are allowing high voltage spikes which damage the LNB but not enough to take out other kit.&nbsp; You also mentioned the cable to the bad feed is longer than the other house, but is it close to any electrical switchgear? - just a thought.</p></blockquote><p></p>

[QUOTE="joddle, post: 919190, member: 247983"] But are the receivers the same on the lost feed to the ones on the other feeds? - if they are not it could be that some are better than others at insulating against spikes. If they are the same then that rules out receiver issues and means something is going high in just the one house (or at least higher enough to do damage). I can only think that voltage overload would pop the LNB so something a bit more than 15v was going up the cable. I guess the spike must have been at least double the wokring voltage to do any damage as there must be a fair safety margin built into the LNB - yet the voltage was not so high it also took out the other feeds - for which I suppose a much higher pulse would be required, perhaps hundreds of volts or more! So what could cause this? - my gusess is mains fluctuation - as stated before we have had 400v pop through our wires at sometime (an exception I know) but we do get the occasional brightening of lights -possibly due to unevan loading somewhere else on the three phases in our street or close by. If this is happening on one propery and not the other then maybe pulses along with bad earthing are allowing high voltage spikes which damage the LNB but not enough to take out other kit. You also mentioned the cable to the bad feed is longer than the other house, but is it close to any electrical switchgear? - just a thought. [/QUOTE]

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