I am sorry to hijack this thread, but I am having the same problem with my 1518. Mine is 2 years old and has worked flawlessly until this spring. The serial number is 100568090309
Here is our situation:
Dish Network subscriber
Receiver is DP311 used in our bedroom at home and goes with us when camping
Here is what I have done to troubleshoot so far:
I have tried the antenna in 4 different locations which all have a clear view of the southern sky.
I have tried 2 different pieces of coax. One came with the antenna and the other I purchased. Both are in good condition with no cuts, kinks, etc.
The power supply is a Sunforce 5.8 amp converter. I have used a voltmeter to verify that it is putting out the proper voltage.
When I power up, I can hear the motors running inside the dome and it seems to finally stop looking for a satellite, but does not lock on.
I have verified the receiver operation by connecting it to our home stationary antenna and it works fine.
I have verified the sw64 switch settings and run the tests again. The results show it finds 110, 119 and 129.
The receiver will power up and run through the progress screen. It will eventually get to 5 out of 5 and the screen will briefly display programming information on a black screen but then go back through the progress mode again. I have checked the system installation and the best signal I was able to get was 62. On other occasions (I have tried several times) I would get somewhere between 52 and 57. I would think 62 would be enough for a lock, but the point dish indicator says it is not locked on and the tone also indicates it is not locked on.
This is the same receiver I have used since we bought the 1518 and it has never failed until now. Can the lnb degenerate over time? Are there other areas we can look at that I might be able to repair at home? If the dish needs repair, what will it cost me to get it repaired? We have really enjoyed our 1518 so far, but surely it should last more than 2 years. We have been very careful in caring for it and storing it properly when it is not in use. I have a vip211K receiver on order and it will arrive on Wednesday. I assume the 1518 will work with it. Please give me advice about how to deal with this issue.

