AboutNagy George Expertise Bsc. in Electronics and Communication engineering. Satellite dish installer, trouble shooter and Quality Auditor for 12 years. Author of the Satellite news article in the "satellite Guide Magazine". Member of the satellite club international (SCI). Member of the IEEE (Institution of Electrical and Electronics Engineers).
Member of the Australian Institution of Engineers.
Expert in signal distribution on many TV sets. Deep knowledge in related fields such as CCTV (closed circuit TV), surround sound and speakers.
Having said that, I have no experience in TV repair.
Expert: Nagy George Date: 10/20/2006 Subject: Direct Satellite dish
Question I have a 3LNB HD Direct satellite. It is connected to 2 recievers. Overnight it quit working (no satellite signal to either receiver). I checked cable connections best I could (not sure how to check if Receivers are outputing to LNB. But can't imagine both receivers going bad at once). I replaced the LNB in the dish but still no luck - neither receiver has a signal...
Where should I start troubleshooting... no storms night before so I don't think it is an alignment issue. Can one receiver or connection knock out the other? How can I tell if the replaced LNB is good? Any suggestions appreciated.
/Bob
Answer Hello Bob,
3 LNBs on 2 receivers and evrything went off, possible causes are:
Dish alignment
Multiswitch gone off
To answer your question, yes one receiver can knock out the other and that's why if you have a multi receiver setup we prefer to have an earthing lead connected to one of them.
I suggest you remove the multiswitch and connect directly one LNB to one receiver just to check if signal is there to try and eliminate the alignment possibility as a start.
