Odd transponders on 103(b)

931 Views 8 Replies 5 Participants Last post by K4SMX, Jul 19, 2008

seltech

Discussion Starter · Jul 17, 2008

Hi guys, Last night I noticed I was getting searching for sat signal on some of my HD chans (Discovery HD Sci HD etc, although NGChd was working fine). Looking at the Sat signals everything is looking great except for 103(b) odd transponders are all at 0 and the evens are in the upper 80's low 90's. Went to test channel 480 and got searching for sat signal, went to 481 and got the confirmed BBC even working. I only have 2 recievers, 1 being a non DVR h21-200 i believe and the other is a SD box. I have no SWM just straight lines from the slimline to the recievers. Does this sound like a bad BBC or something else? when i searched for some answers I saw people usually have problems with the even transponders so I was a bit confused. Checked all the lines for connector corrosion etc. everything is clean and perfect. All I can think off is either BBC, LNB, or reciever maybe bad. any advice is much appreciated

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jimmyv2000

· #2 · Jul 17, 2008

by pass your ground block with barrell connectors to see if its that

could be bad connection at lnb.
post all your stengths on all sats here.

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lucky13

· #3 · Jul 17, 2008

seltech said:
Hi guys, Last night I noticed I was getting searching for sat signal on some of my HD chans (Discovery HD Sci HD etc, although NGChd was working fine). Looking at the Sat signals everything is looking great except for 103(b) odd transponders are all at 0 and the evens are in the upper 80's low 90's. Went to test channel 480 and got searching for sat signal, went to 481 and got the confirmed BBC even working. I only have 2 recievers, 1 being a non DVR h21-200 i believe and the other is a SD box. I have no SWM just straight lines from the slimline to the recievers. Does this sound like a bad BBC or something else? when i searched for some answers I saw people usually have problems with the even transponders so I was a bit confused. Checked all the lines for connector corrosion etc. everything is clean and perfect. All I can think off is either BBC, LNB, or reciever maybe bad. any advice is much appreciated

May or may not be the same problem.
Late last night (after 11 pm) and this morning I was getting searching for sat on several channels on all my receivers: Disney, CNN, Showtime and others. (I asked my daughter to make a list, but I didn't see it this morning before I left).

HBO wasn't coming in at first, but reappeared after I reran sat setup on each receiver.

This morning, I went outside to see if anything had hit the dish. I checked the connections where they enter the house, and tightened one cable connector. The missing channels were now back (at least on one unit).

I didn't post this before, because I thought the problem was the loose connector. I'm mentioning it now in case it's related to the OP's problem. Didn't check any of the channels mentioned by OP.

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seltech

Discussion Starter · #4 · Jul 17, 2008

I'll check that ground block once i get home, and i'll post up my sat signals, but pretty much all the other sats look good (minus the 119 i have no LOS) just the odds on 103(b) are all gone

pretty strange too, i was watching sci HD, some friends came over so I shut off my receiver and TV. turned it back on after they left and thats when i got the searching for sat and notice the problem. I'll post back later.

thanks for the info lucky13, I'll double check all my connectors.

I'm pretty far from any sort of populated area form my house, so while i was at work i was going to look for a spare BBC, does Best Buy carry these?

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evan_s

· #5 · Jul 17, 2008

only way to get a bbc would be come D* or one of their installers. It's not something BB would carry. You can get them free from D* you just need to call and ask or there is a web page but it may or may not actually work.

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K4SMX

· #6 · Jul 18, 2008

Actually the odds are more likely to disappear than the evens with a loose connector, because there's ~50% less voltage (13 vs. 18) trying to bridge the gap. Why 13volts + 22 khz won't pass yet 13V with no tone will, I can't fully explain. It may be that the loose connection, even though it passes the 13 volts, perhaps with a volt or so attenuation within the LNB's tolerance, can't also pass the tone. All I know is it happens. I think it's fair to say that our experience simply shows that the 103(b)'s/(c)'s are the first to go with a loose/corroded connector.

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seltech

Discussion Starter · #7 · Jul 18, 2008

Well last night I went threw the cables, cut and replaced all the connectors, some were questionable so its good i got it done, unfortunatly the103(b) odds are still at 0, although i've gained about +2% on my other signals across the board :lol:. I got a buddy close by that is a DTV installer and has a spare BBC and 5-LNB. I'm thinking the BBC is ok and my LNB is the culprit but i'll find out tonight for sure. My signals on my other sats are still ok. Although I've noticed one weird thing, I have no LOS to the 119 but for some reason I always had a high signal on the first available transponder, up untill this problem occured. Now the 119 shows all 0's. I'm sure some of you gurus can make something of that little quirk.

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seltech

Discussion Starter · #8 · Jul 19, 2008

Just wanted to update, replaced the BBC and my odd transponders on the 103(b) came back up to normal signals. Ended up making a small 6 inch RG-6 to connect the BBC to the reciever, the old one had quite a bend in it so i figured why not add a little cable and bend that instead

. Thanks for the advice fellas

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K4SMX

· #9 · Jul 19, 2008

You're welcome back anytime, and thanks for the update. I can't recall many previous posts of BBC's going bad on just the odds or evens. Usually they fail completely, so I'll file your report away in my "mental toolbox."

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