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TRG

Pub Member / Supporter

Last reply Jul 26, 2012 · posted in FTA Receiver / Equipment Support

Strange problems with G16@99W C-Band on MicroHD

Got my two MicroHD receivers yesterday afternoon. I have a fixed dish on 125W for the PBS programming so I decided to set up on that bird first.

Here are the steps I took.
Upgrade via USB HDVS54012-1108249A0 2012-7-6
Factory reset.
Verify that the update took by looking at "information" display. OK
Selected 125w K AMC21 from the Satellite List. A little blue heart confirms selection
Went to Antenna Setup/ Motor/Switch Setting. Verified LNB LO (10750) and selected DiSEqC 1.0 Port 2. Left all the other defaults.
Went to Single Satellite Search / Scan type FTA Only. Blind scan normal. Left all the other defaults.
Was rewarded with a nice channel list of all the PBS that I was receiving on my former receiver, an Openbox S9.
Watched an hours worth of "Last of the Summer Wine" on OETA. My wife wanted to watch one of those antiques shows. I went to bed.

So far so good.

Today I wanted to add another fixed dish to the receiver. This one is C-Band aimed at 99W.
Selected 99w C G16 from the Satellite List. A little blue heart confirms selection
Went to Antenna Setup/ Motor/Switch Setting. Verified LNB LO (5150) and selected DiSEqC 1.0 Port 3. Left all the other defaults.
Went to Single Satellite Search / Scan type FTA Only. Blind scan normal. Left all the other defaults.

Standard Scan
3900 28001 H Pentagon
3900 28001 V Pentagon
3820 26000 H GDMX
3820 26000 V GDMX

Detailed Scan + Scan all (Not just FTA channels)
All of the above plus
4060 27780 H FOX Feeds
4060 27780 V FOX Feeds
3925 3679 V $

Notice there are a lot of transponders missing. Most important to me are 3845 15030 H PR Networks and 4000 26400 H LESEA. Also notice the duplicate transponders, one H and one V.

Then I went to the TP list and manually added.
3845 15030 H
4000 26400 H

No Quality registering on the meter.

Tried the whole routine listed above on my second MicroHD with the old firmware. Same thing.

Hooked my Openbox S9 back up and the PR MUX and LESEA are blasting in strong at 85+ Q.

Back to the MicroHD, nothing on those two transponders. Tried making slight adjustments up and down on the freq and SR. Still nothing.

Went out to the dish and checked all my connections. No issues.

Checked dish alignment. No issues.

Removed switch and wired directly into the LNBF. Disabled switch in setup. Same problem.

At this point I don't know what else to do. I've never seen anything like this before.

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SatelliteAV

Jul 24, 2012

The dual transponders on opposing polarities is caused by scanning the same polarity twice. How does this happen?

Well, the obvious is that when the microHD is directly connected, only vertical transponders are being scanned. This could be a result of one of the following: low voltage output on the microHD, defective or excessive length coax, corroded connector, or most common a voltage switch on the LNBF having a high voltage switch point or failing.

I would measure the loaded voltage at the rear of the microHD and at the dish. Verify on a preprogrammed Horizontal transponder 18vdc (+/- 10%) and on a Vertical transponder 13vdc (+/- 10%).

TRG

Jul 24, 2012

SatelliteAV said:
The dual transponders on opposing polarities is caused by scanning the same polarity twice. How does this happen?

Well, the obvious is that when the microHD is directly connected, only vertical transponders are being scanned. This could be a result of one of the following: low voltage output on the microHD, defective or excessive length coax, corroded connector, or most common a voltage switch on the LNBF having a high voltage switch point or failing.

I would measure the loaded voltage at the rear of the microHD and at the dish. Verify on a preprogrammed Horizontal transponder 18vdc (+/- 10%) and on a Vertical transponder 13vdc (+/- 10%).

Thanks for the reply, Brian. I managed to take some voltage readings before the sky opened up and started pouring rain. Here in the desert thats like nectar from heaven. Its been an awfully dry and hot summer so far.

I'm not sure how to breakout the wires and do a "loaded" check. I assume by that you mean with the LNBF and the MicroHD connected and the receiver being under load. So my reading are going to be with one end or the other disconnected.

Back of MicroHD
14.01v - Vertical
18.57 - Horizontal

At the dish
12.61v - Vertical
17.10v - Horizontal

Within 10 percent, without a load anyway.

You gave me a few ideas to check tomorrow. First I'll check all my connections. This coax was new about a year ago. I use good quality cable and compression fitting and have a proper tool to put them on. Its pretty dry here so I don't think I have a corrosion problem but I'll look anyway. I have a spare LNBF that I can put in the scaler. I did have one of these fail on one polarity before. I kind of ruled out LNBF failure during my troubleshooting because I could get it to work with 3 other receivers. I suppose it could be marginal.

One other thing about the coax. There are two lines running out to the dish farm feeding two rooms in my house. Since the Ku dish/LNBF is operating correctly I can probably assume that the coax is OK. I'm leaning more and more towards a marginal C Band LNBF. Thats one of the easiest things to replace too. I'm afraid it will have to wait till the morning though. There is a lot of lightening out there right now. Its not safe to stand next to a big metal disc at the moment.

SatelliteAV

Jul 25, 2012

Quite a voltage drop with no load at the dish. How long of cable run?

bidaw

Jul 25, 2012

I had the same problem as the OP on all sats on my 12' with Chap Bullseye II Dual Ortho. It was only with the microHD. It perplexed me because I have several other recvrs and not had a problem. So I took last weekend and took a stab in the dark by changing the skew of my feedhorn ever so slightly until I was able to scan without the duplicate H and V transponder scans. Magically, I was able to pickup all the transponders and channels I was supposed to...I did not loose anything with my other recvrs as well. Worth a try at least. Honestly...TRG...I had the EXACT symptoms that you had.

lost_mesa

Jul 25, 2012

TRG,

I agree with what Brain said about the voltage drop. With only a volt meter connected at the LNB end of the cable, you should see the same voltage as at the receiver. This is because without the LNB connected, there is essentially no current flow, so there will be no voltage drop. Something is not right there.

The info you posted clearly indicates that your LNB isn't switching to horizontal with the microHD. Receivers put out about 13 volts for vertical and about 18 volts for horizontal. It is likely that the microHD is putting out slightly less voltage then your other receivers, so your LNB never switches to horizontal. But I don't think this is the fault of the micro HD, the 18.56 volts you measured indicate it is OK.

I think you have one of two problems, perhaps both. Your C band LNB needs a bit more voltage than normal to switch to horizontal. Your other receivers put out a bit more voltage for horizontal than the microHD, so they work OK. The difference could be as little as 1/10 of a volt. Try another LNB to see if this is the problem.

The other possible problem is that you have more voltage loss in your cable than you should. Again, your other receivers are probably putting out a bit more voltage for horizontal than the microHD, so they work. Try another cable to see if this is the problem.

bidaw

Jul 26, 2012

That's a thought too... I have Pico power inserters for my lnbs... Helps immensely for my cable run.

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Scott Greczkowski

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So let the game continue!

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CONTINUE ON AND HAVE FUN! WELCOME HOME TO SATELLITEGUYS.US!

Here are the original rules for the game as posted by WebbyDude back in 2006. http://www.satelliteguys.us/threads/68645-Song-Name-Game

Just name a song title and the band who performed it. The next person does the same thing, but needs to list a song title or band name which includes a word from the previous entry. Pick songs from any genre.

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Another example:

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Get it?

An additional note: we all know that song titles, sometimes, use profane words. Because this is a family friendly website it is advised that you clean up that title up a bit. This is accomplished by using something like sh!t instead of the real word. Thanks....

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I guess even the patience of us laid-back Hoosiers has its limits:

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naptime

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I'm getting fabulous picture on Ch. 148 4k, but zero audio with H713. This is with a recorded show (Notre Dame game). Anyone else have this? Audio is fine on every other channel.

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jsmit86

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naptime said:
I'm getting fabulous picture on Ch. 148 4k, but zero audio with H713. This is with a recorded show (Notre Dame game). Anyone else have this? Audio is fine on every other channel.

It's a known issue.
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I was able to give the tech ops team some data logs so they could diagnose the problem, and they rolled me back to H708 temporarily. It fixed that issue.

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jsmit86 said:
They let me know that they understand what caused the issue, and it will be fixed within a few weeks in a new update.

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Almighty1

Yesterday at 4:07 PM

jsmit86 said:
It's a known issue.
For a temporary fix, go into the menu, Audio, and turn Dolby Audio "OFF". You will have PCM stereo audio.

I was able to give the tech ops team some data logs so they could diagnose the problem, and they rolled me back to H708 temporarily. It fixed that issue.

They let me know that they understand what caused the issue, and it will be fixed within a few weeks in a new update.

I guess they will be busy when lots of people start asking for rollbacks to H708 now that you mention that downgrades of software does exist because it will likely fix the OTA Single Tuner and the IR Remote problems in H710-H713.

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Almighty1 said:
it will likely fix the OTA Single Tuner

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Almighty1 said:
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long_time_Dish

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reubenray said:
I have gotten back into watching SG-1 and I have recorded most of the episodes to binge watch. What episodes are about the Antarctic or was this a movie? Also where could I watch the SG-1 movies?

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reubenray

Yesterday at 3:54 PM

long_time_Dish said:
Well, there are a couple involving the Antarctic. "Solitudes", S1 E17 (one of my favorites), Then, "Lost City', S7 E21 and E22. Then, in the SGA pilot, "Rising", S1 E1 and E2, it starts out in the Antarctic for about the first 20 minutes or so.

Which one has O'Neil being Ancients? I am at the end of Season 8 now.

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reubenray said:
Which one has O'Neil being Ancients? I am at the end of Season 8 now.

If I understand your question, O'Neill had the Ancient's knowledge in the "Lost City" two-part episode. That was when Anubis attacked Earth and there was a big battle over Antarctica.

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