I have a cottage that I go to on occaision in central Florida on the Ocala National Forest. A couple years back I set up a Dish TV Sat and was able to get a signal aournd 80-85. Last summer when I was there there was no signal. We put on a new LNB (Dish part LNBF). The problem seemed resolved but what happens is that on some nights the signal will degrade to 0. During the next morning it will slowly climb to a max of 64 (some tansponders, others 0-60). Then start it's cycle again at night. I have tuned the dish for the strongest signal that it will show.

I have checked connectors at both ends (1 strand of unbroken cable)and both are tight and dry). I suspect that the original LNB was not bad- just experiencing this same situation.

I cut down several trees so that now I have clear sky. No change (but lots of firewood and using the chain saw was fun!).

I spoke to dish who claims they did not have any known problems at the time.

I also tried powering down the system for a while to cool off- but no change.

Any suggestons ????

Marty, the proper procedure for trouble-shooting is to eliminate each link, one at a time, usually by substitution, and don't assume anything!

For instance, you mentioned checking both ends of the coax. What about every inch in between? Animals love to chew on wiring in uninhabited buildings. Can you temporarily connect a new run of coax from the dish to the tuner? Through a window will suffice for an experiment.

The fact that the signal varies with temperature points to the cable, too. Things change size and shape as the temperature swings. Again, no assumptions.

Larry

Good point. If the cable checks out ok, what is your best next guess (I have to go a distance to check these things so I wish to have a few possibilities lined up)

If aiming isn't the problem (a friend and a pair of walkie-talkies is a great asset), and it's not the cable, then it has to be equipment.

There's the LNB, the tuner, and the TV. Since the tuner's signal-strength meter is indicating a varying signal, that leaves out the TV.

You've replaced the LNB with no difference. I'd recommend taking another tuner. That's all that's left, but my bet is still with the cable.

Larry

Sounds like moisture in the coax.