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View Full Version : SWM LNB not recognized by receivers


bgrove
02-07-09, 03:02 PM
I've been trying to upgrade my slimline dish with an sl5-s lnb without success. I think I have a bad swm lnb, but I'd like to consult the wisdom of the masses before I return it.

In order to keep things simple, I configured a single line to one receiver. So the connections are SL5-S -> power inserter -> receiver. There are no splitters or b-band converters involved here. When I boot the receiver, I get an error that it can't find the satellite signal. The receiver doesn't even seem to recognize the swm lnb, as the guided satellite setup defaults to a round dish with a multiswitch.

- I've tested the voltage on the coax at the dish and it looks good, so it's not a power inserter issue or an issue of the wiring between the power inserter and the dish
- Switching back to the old multiswitch lnb works, so it's not an alignment issue
- I've tried other recievers, and they all exhibit the same problem
- I've tried different coax runs from the power inserter to the receiver
- I've powered down everything and then powered them back up in the correct order

Is there anything I'm overlooking? Could this be anything other than a bad lnb?

Grentz
02-07-09, 03:06 PM
What receiver is it? Some are picky and might need a few red button resets to kick them into seeing it.

bgrove
02-07-09, 03:23 PM
I've tried with an HR20, an HR22, and an H20.

Grentz
02-07-09, 03:29 PM
The H20 can be picky. I would try with either the HR20 or HR22 at first at least.

You should just have to plug the output from the PI into the SWM1 port (Satellite 1) and then try resetting it a few times. You should also run the guided setup/satellite setup if it comes up and try setting it that way. Make sure you pick SL5s instead of Slimline 5.

carl6
02-07-09, 03:31 PM
Have you manually gone back through satellite setup and chosen the appropriate swm dish/setting?

bgrove
02-07-09, 03:42 PM
The guided setup doesn't help. I've tried several times.

Does it matter if I reboot by pushing the red button versus unplugging the receiver?

veryoldschool
02-07-09, 03:53 PM
The guided setup doesn't help. I've tried several times.

Does it matter if I reboot by pushing the red button versus unplugging the receiver?
It shouldn't... BUT:
I would start with the HR [not the H20] and pull the power cord for a full ten min.
Have your SWMLNB powered up and then plug the HR in "and see".

veryoldschool
02-07-09, 03:57 PM
I've tested the voltage on the coax at the dish and it looks good, so it's not a power inserter issue or an issue of the wiring between the power inserter and the dish.
How long is the coax & what type [solid copper core?].
"Testing" the voltage without the LNB [load] connected isn't a "true" test of how much voltage the LNB is getting.
Which PI do you have? [21 or 29 volt]

bgrove
02-07-09, 04:11 PM
How long is the coax & what type [solid copper core?].

The run to my HR22 is long, I'd estimate about 80 ft. I'm fairly certain that this is solid copper core RG6.
The run to my HR20 is only around 10 ft. I'm certain this is solid copper core RG6.

"Testing" the voltage without the LNB [load] connected isn't a "true" test of how much voltage the LNB is getting.
Which PI do you have? [21 or 29 volt]
21 volt.

bgrove
02-07-09, 04:43 PM
It shouldn't... BUT:
I would start with the HR [not the H20] and pull the power cord for a full ten min.
Have your SWMLNB powered up and then plug the HR in "and see".

I tried unplugging both my HR20 and HR22 for 10 minutes. No luck, even after a couple of subsequent reboots.

The receivers are acting as if nothing is connected.

Grentz
02-07-09, 04:47 PM
Have you tried rebooting your SWM at all?

You should unplug your receiver(s), unplug SWM PI, plug in SWM PI and wait a few minutes, plug in receiver(s) one at a time.

veryoldschool
02-07-09, 05:18 PM
The run to my HR22 is long, I'd estimate about 80 ft. I'm fairly certain that this is solid copper core RG6.
The run to my HR20 is only around 10 ft. I'm certain this is solid copper core RG6.
21 volt.
This one sure shouldn't be a problem. "Some" have had problems with the 21 volt and the 29 volt "fixed it", but with your "short run", I can't see that this would be your problem.