I apologize up front for this lengthy first post, but I want to include enough details about my situation to hopefully get a helpful response. I don't think this is just bad wiring between my outlet and multi-switch and/or dish.
14 months ago I had a HR20-100 (HD-DVR) installed in the front room, and a D11-500 (non-HD, non-dvr) installed in a bedroom. About 4 months in, I had the HR20-100 replaced with a HR20-700 due to some very flakey behavior.
For the past 2-3 months I've had the D11 and TV in the bedroom unplugged as it was not in use. About 6 weeks ago I started noticing a lot of video pixelization and garbled audio with my HD channels on the HR20, so I called DirecTV and they dispatched a tech out. Each time they dispatched out, they fixed 1 thing, and invariably the quality problems returned shortly after the tech left. Apparently the first problem identified was a shoddy mount job -- 2 bolts into the fashia board instead of a proper eaves mount, so an eaves mount was installed and I was told the likely culprit was wind causing dish misalignment. Over the course of about 4-5 dispatches after this, new wiring was run from the dish to the multi-switch, the multi-switch was replaced, new cabling was run from the multi-switch to my outlet, and then on the final dispatch out, the tech installed a new swimline LNB and SWM so I could use both tuners on my receiver with a single wire. He also replaced my HR20-700 with an HR21-100. Finally the quality problems seemed to go away!
Keep in mind all of the changes that have recently happened. Now last week I decided to plug the D11 in the bedroom back in, but it was just stuck at searching for satellite and finally failed to error code 771 after about 5 minutes. Initially I thought maybe the tech just didn't plug the right cable for the bedroom into the new multi-switch output, so I used my cable toner and confirmed the right cables were connected. Next I decided to bring my HR21 back into the bedroom, using all of the existing cabling in the room, and what do you know, it found the satellite and I was watching live TV in just a few minutes. It was reporting good signal strength on all the transponders for satellite 101, so as far as I was concerned I'd ruled out cabling up to the outlet, and even the cable between the outlet and receiver. DTV agreed and shipped me out a new D11.
Yesterday the replacement arrived -- a D11-300. It had the exact same problem as the previous one, failing to error 771. So as a test, I brought the new and old D11's out to the main room where the HR21 is, wired up each to separate inputs on my TV, used the existing coax coming out of the outlet and powered each DVR up one at a time. The new D11 failed to 771 as it did in the bedroom. I left it powered up, but moved the coax cable over to the old D11 satellite input next, and powered it up. It too failed to error 771 just like it did in the bedroom. So now I have 3 receivers sitting on top of each other (HR21 & two D11's), all powered up connected to 3 different inputs on my TV (using known good wiring through the house), where I can just move the coax wire between inputs to test each device.
On the D11's, for satellite setup I have 5 options; Round, Oval 2 LNB, Oval 3 LNB, Swimline-3, 5 LNB Multi-Sat. I've tried using all of them with the same failed result.
D11-300 (new one)
Original Version: 0x1005
Past Upgraded Version: 0x1108
Satellite 101(A)
Transponders:
1 (92)
8 (91)
13 (30)
15 (92)
22 (80)
27 (57)
29 (92)
The rest of the transponders are all 0's
D11-500 (old one)
Original Version: 0x1007
Past Upgraded Version: 0x1108
Satellite 101(A)
Transponders:
1 (88)
8 (91)
13 (60)
15 (90)
22 (82)
27 (74)
29 (88)
The rest of the transponders are all 0's
When I check signal strength of the 101 Satellite using my HR21, they are all in the mid 80's to high 90's, with two transponders reporting 0. So using all the same wiring, to the same satellite, clearly there is no communication problems or degraded signal using a known good receiver.
I find it unlikely (although certainly possible) that I have 2 bad D11 receivers. DirecTV is in the process of sending me a third one, but I am suspecting the result will still be the same. So here's what I'm wondering.... Could the fact that these D11's are not working be due to the recent swimline LNB and SWM installation? I've ruled out all the wiring in the house, and I suspect I've done a lot more troubleshooting than DTV's average customer. It seems like their answer is to just keep throwing more hardware at the problem. I'm hoping the new receiver that ships is a D12 (or anything other than a D11 for that matter) for the sake of troubleshooting, but the DTV rep advised she has no control over what they send out. Does anybody have any other ideas of things I can try? Anybody heard of anything similar happening? I've seen some various posts about potential software bugs causing the 771 failures, but those have mostly been related to the HD boxes, I've not seen any reports of this happening with the standalone D11.
I appreciate any feedback on this. Thank you!