Error 771... help please

[SSpectre]

I'm getting error 771 on tuners 1 and 2. The system was only installed a couple of weeks ago and there hasn't been any weather events. It started this morning (after I left for work of course)... I was watching baseball last night perfectly fine. Wife did an RBR during the day... she said she could get some stations this morning but nothing is working now. I checked all the connections I could and they all seem secure.

Transponders (from tuner 1):
101:
0 96 0 0 0 99 0 99
0 97 0 97 0 100 0 100
0 0 0 99 0 100 0 99
0 75 0 100 0 98 0 99

110:
All are N/A except for numbers 8, 10 and 12 which are 0

119:
#1-21: N/A
All the rest are 0 except: #25 which has a 65 and #27 which has a 98

103(c):
92 0 92 0 89 0 89 0
89 0 89 0 89 0 N/A N/A
The rest are N/A

SWM
1-9 are 0... the rest are N/A

I checked all the connections and they're snug.

Any ideas?

[HDTVsportsfan]

IIRC from other issues w/ zeros on every other transponder it could be an LNB issue. Or maybe a bad connector causing a short.

[SSpectre]

How do you test for a bad LNB?

[Canis Lupus]

First off, how many receivers do you have and how are they connected from the dish? Do you have a multiswitch?

Could be a number of things.

[SSpectre]

See sig... but to expand

Slimline 5-LNB --(four lines)-->SWM5
SWM1 ---(one line)---> SWS4 splitter Power Pass In
SWM2 has the terminator cap on it
Power Pass Out --(one line)--> Power Inverter In
Power Inverter Out -----> HR21-100

Only one receiver.

[HDTVsportsfan]

Oh geez......having the SWM and PP splitters certainly adds to the equation. I should have asked more about your setup. I was just going by your sig.

Why do you have the splitters?

[GTS]

Using a barrel connector, bypass all the SWM equipment so that only the receiver, cabling and dish are in play. If the system comes back up, then the problem is in the SWM equipment. Contact Directv, report the problem and continue to use the system as is. If not, contact Directv, report the problem and hope they get to you sooner rather than later.

[SSpectre]

Oh geez......having the SWM and PP splitters certainly adds to the equation. I should have asked more about your setup. I was just going by your sig.

Why do you have the splitters?

SWM for the brand new house prewired for cable. All the lines run into a wiring cabinet. Used the splitter I got with the SWM mostly just to hook it up, but when the time comes I can just hook another line up to the splitter and hook another box up.

I traded out the splitter for another single power pass rated from 5 - 2300MHz I had lying around and that didn't help.

[HDTVsportsfan]

OK....If you bypass the SWM as GTS as suggested, then you will have to rerun setup and tell the receiver you are only using one tuner. Or at least take the splitter out and keep removing equipment until you have nothing but dish-cable-receiver and TV.

[SSpectre]

OK....If you bypass the SWM as GTS as suggested, then you will have to rerun setup and tell the receiver you are only using one tuner. Or at least take the splitter out and keep removing equipment until you have nothing but dish-cable-receiver and TV.

I'll go pick up some barrel connectors and try them out.

[samrs]

I reckon you reset your SWM and HR20 in the correct sequence.

[SSpectre]

I took two barrel connectors, took the first line out of the SWM and connected it directly to the line going into the house. I took the splitter off and connected those two lines directly and took the line that comes out of the wall and plugged it directly into the HR21 tuner 1. I couldn't find a way to set the HR21 to single tuner mode, but I did RBR and rerun satellite setup.

Overall, the transponders are not looking good...

101:
0 0 0 0 0 0 95 0
95 0 0 0 96 0 0 0
0 0 0 98 0 0 91 0
0 0 91 0 0 0 92 0

While I'm typing this the transponders keep giving me different readings... I'll have a 0 in a transponder and then a 96 and then a 0 again a few moments later and a 100 will pop up somewhere else.

110:
All N/A or 0

119:
All N/A or 0 except for #22: 96

103(c):
All 0 or N/A

I was able to watch channel 2 SD for a few minutes, but now it's 771 Searching for signal ln 2.

The one thing I didn't do (because it's dark and the mosquitos are out) was disconnect all 4 lines from the SWM (which is not receiving any power). I didn't see this being a problem because under a non-SWM setup those lines would be going to other receivers.

Thoughts?

Edit... now i'm getting 771 Searching for signal on satellite ln1.

[GTS]

You did right. You can't set it up for single tuner. The unit will sense there's only one input and shutdown the other tuner. Go ahead and disconnect the other three lines from the SWM, can't hurt. Try setting the receiver up for dual LNB instead of Five. Try connecting to one of the other lines coming down from the dish. If problem persists, there's not much else you can do. Use the actual meter readings instead of the matrix and see if you're attaining lock with extremely low signal or not locking at all.

[SSpectre]

I did another RBR... on the matrix the 101 transponders still look horrible but most of them were actually getting very good signal when I tested individually using the meters.

110 also gets good signal individually.

119 getting good signal on most transponders too.

99(s) is getting nothing.

103(s) and 103(c) are also getting nothing.

I also get 771 briefly before tuning stations that are coming in (this didn't happen before).

[GTS]

It really looks like an alignment issue. Could be the dish moved. It doesn't take much for the Ka band to loose signal. Call Directv and have a realignment done.

[SSpectre]

After waking up this morning, I was looking at it some more... I realized I don't have a BBC on there. Is that why 99 and 103 aren't showing any signal?

Of course... I don't have any since I gave them to the installers... they asked for them because they don't get any spares.

I tried hooking up the SWM again, including unplugging the receiver and PI. It's showing the same thing it did before.

Do I have a bad SWM?

Edit... Installer brought my BBCs back and everything seems to be working coming straight down from the dish. Looks like the SWM is bad.

[GTS]

If you're still getting the "searching for signal" prompt on channel changes, you need to have the dish aligned.

Glad to hear you're back up otherwise.

[SSpectre]

No, I'm not getting the 771 on channel changes anymore.