4000C Dropouts

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thor95

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I have a 10 year old 4000C (4700) that has recently started having a lot of compression dropouts.
I'm looking for some feedback on whether this is ExpressVu changing the compression out of reach of this receiver or is the receiver finally packing it in?

Seems to work most of the time, then compression artifacts followed by black screen and audio chirp.
Happens on Galaxy audio as well.

This seems to have started to happen within the past couple of weeks.
 
Although I wouldn't rule anything out, my guess would be something in the receiver. Almost sounds like an overheating issue mainly due to the statement that it happens with Galaxy as well.
 
I had a similar issue with my 4700 a while back. For some reason, only the Movie Central channels would have severe compression artifacts and audio drop-outs. It ended up being the coax connector on the receiver was causing the problem. If I wiggled the connector a bit, the channels would work fine. Why it only affected the MC channels, I do not know. I ended up scrapping the receiver and buying a new one anyway, mine was 8 years old.
 
Looks like it was the box.
Today all my even numbered transponders died.

Thanks for the information.
 
Dropping all even or all odd transponders is a common issue that has been discussed quite a bit. Usually, it is a cable/connector issue. This may also cause your other issues. A short in the cable (bad connector, moisture entering a cut, etc) can cause a loss of power and signal.
 
It may be the LNB or the connector at the dish.
I borrowed a friends 2700 which works fine at his place and I still have the same problems.
I'll try swapping LNB's first.
My dish is up the tower so a bit of a pain to get to.
 
It was the connector. As soon as I took it off, the centre core snapped off and the inside insulation was all black.
Changed the connector and back in business.
My old 4700 is ticking away beautifully again.

I do technical troubleshooting in other technologies for a living and this is the first time I've had to do anything to my dish system since I installed it 10 years ago.
Thanks for the information, saved me some money today so I can keep saving up for my HDTV Home Theater down the road.. This is great, I would never have thought that these symptoms would have lead to a bad connector.

Cool and thanks again.
 
Glad we could help.

This is a typical problem as installations age. Particularly for DIYers it is well worth the extra $1 or $2 to use the best quality connectors avaialble, certainly ones designed for outdoor usage. Saves climbing roofs, ladders, towers in the middle of the winter.

In fact, it isn't a bad idea to simply replace ALL connectors every couple of years. The cost is minimal and you can do it when it is convenient and the weather is good.
 
Actually, that's the surprising part.
I used watertight connectors and encapsulated the entire affair in silicone sealant.
Or at least I thought I did. There must have been a gap in the silicone somewhere that allowed water to leak in.
After changing the connector I spent some extra time with the sealant and hopefully won't have to go through that again.

It's all in the details.
 
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