sound fade out!

panda2005 · #1 (**permalink**) 05-26-2006, 05:56 PM

Hi There,
I just re-installed the FTA satellite system after moved. Everything(Video and audio) is good for a while and all the sudden the sound is gone. I tried turned off and on the receiver and the sound is back for a little bit and it's gone again, I did this for couple times and finally the audio can't be recovered. So I turned everything off. The next day, I tried again, the same problem, the sound worked for a while (less than 1 hour) and finally disappear. Not sure what's problem, the receiver I beleive is more than 5 years old. Any advice would be appreciated.

rainman · #2 (**permalink**) 05-26-2006, 09:49 PM

what type of receiver do you have. also recheck all of your connections may have one loose.

panda2005 · #3 (**permalink**) 05-27-2006, 08:24 AM

I used Visionetics VIStar 2000, All connection are OK. I think it might be either LNB or Receiver that cause the problem. LNB is about 3-4 years old. How can I know if LNB is bad and how long LNB usually last?

rainman · #4 (**permalink**) 05-27-2006, 07:48 PM

lnb's on my c band dish are about ten year's old. most likely it's your receiver. if you have access to another receiver would be easy to check.

elgemcdlf · #5 (**permalink**) 05-30-2006, 09:44 AM

How are you connecting your receiver to your television? Using AV cables or coax? Try replacing the coax or av cables first. I have had a bad piece of coax do this in the past and have had a AV switch box go out on only the audio side and cause the same problem.

wejones · #6 (**permalink**) 06-04-2006, 10:17 AM

If it is just the audio and not video, then it is NOT the LNB. I'd agree with the last post, ie that it is a switch failing. I too have had an A/V switch fail for audio only, in fact I've had 2 such switches fail. If there is no A/V switch in the system, then I'd suspect the receiver itself. I've also recently had a digital receiver have the audio go out. Actually it went out on only one of the 2 stereo channels.
Years ago I had an expensive communications radio, which seemed to lose sensitivity after being on for more than a half hour. I took the thing apart, and found a transistor that if I touched a cold piece of metal to, it would bring the thing back to full sensitivity, but then it would slowly fade away again, either due to slowly heating up or slowly collecting static charge or something. Never did get it fixed. I just use it for short periods of time. :-)