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Need help please....(771) 2-wb68's

Discussion in 'DIRECTV Installation/MDU Discussion' started by trent741, Jan 2, 2012.

  1. Shades228

    Shades228 DaBears

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    If you just want to test your multi-switch's then hook one up stand alone and see if it works. If it does hook the other one up and see if it works. If they both work seperately than they're fine and it's something else.

    You have stated what channels are impacted on your HD DVR's. Are they HD or SD? What are the transponders the channels are on. What is the signal strength for the transponder. You're quick to say it's not something without actually giving any information.

    Without asking information we can't get the information to help. If you don't want to give the information we ask for then I guess you're not really wanting help. It's not like there's a universal "do this" and everything works. According to your actual post you don't even need a second 6x8 because you said you had 4 HD and 3 SD which is only 7 tuners which is fine for 1 6x8.
     
  2. trent741

    trent741 AllStar

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    Ok Shades, you are NOT helping me at all!! I have told you I am not retarded, You first ask me "why didnt you go with SWM" and now you are telling me that I dont even need (2) wb68's cause I have outputs already!
    I know that I first stated that I have 4 HD & 3 SD, but the 4 HD are DVR's & you knew that because you just said something about the channels impacted on my HD DVR's. Like I said earlier, I thought this site was to try and help with problems, I am still getting treated like a retard! All I asked was what the problem could be, not things like: you dont need 2 wb68's, why didnt you go with swm, and such. Please if you are going to reply I do NOT want to hear things like this. Thanks to Evan for the logical reply, I will try doing the multiswitches seperatly by themselves first and the try again together making sure the connections are all correct and will post back the results and go from there.
     
  3. carl6

    carl6 Moderator Staff Member DBSTalk Club

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    And therein might be your problem. The WB68's are non-powered, so the DC voltage from the receiver has to go through your coax, through the WB68, through the splitter and then through the coax to the LNB assembly in the dish. It is very possible you just have too much voltage drop.

    A solution to that is a Sonora Power Inserter/Phase Locker http://www.solidsignal.com/pview.as...larity-Locker-2-Amp-Total-Current-(HRPID1422A)

    which you install between the LNB and the splitters.
     
  4. trent741

    trent741 AllStar

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    Oct 26, 2007
    Ok for now I have it hooked up as i did before. This time I ran the HD-DVR's off 1 wb68 & the SD's off the other wb68 and everything is fine so I will just keep it like that for now. Just not sure why i didnt get all channels on Hd dvrs when i had the plugged into other wb68???
     
  5. trent741

    trent741 AllStar

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    Also if the hd dvrs are all on 1 wb68 does that mean I dont have a problem with voltage drop?
     
  6. WestDC

    WestDC Well-Known Member

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    The four lines Coming from the dish (when using Line splitter) Leg one from dish goes to port1 on First W68 & port1 on second W68 and so on-make sure they line up (i'm sure you have checked that?)

    Next-The jumpers you used for the splitters If you made them check them for Stray metal or frays as this may be a source of trouble as well.
     
  7. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Careful, as he's already told us he isn't retarded [a couple of times].
     
  8. Shades228

    Shades228 DaBears

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    I immediately thought of this after reading your post VoS.

    [YOUTUBE]yMpsttlXye8[/YOUTUBE]
     
  9. carl6

    carl6 Moderator Staff Member DBSTalk Club

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    You could still have a problem with voltage drop. It could also be a matter of what channel the various units are set to when you check them. By running all the SD units off one WB68 you are eliminating two of the four splitters, coax runs to, and internal signal paths, of that WB68. (You could disconnect the two 22KHz inputs to that WB68 with no negative impact if you are only using SD receivers with it.)
     
  10. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    To do some "simple troubleshooting", would be to check the SAT readings on an HD receiver connected to each WB68.
     
  11. evan_s

    evan_s Hall Of Fame

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    That depends. If their locals happen to be on 119 they'd need all 4 cables. If their locals are on 101 then you are correct that they probably aren't using those inputs.

    As far as what solved the issue, it's really hard to say. Switching which units are on which switch shouldn't normally affect anything. It's still possible that there was some cabling issue as you did disconnect and reconnect everything. It's also possible that it is still voltage related and that switching around the receivers helped mitigate that. If it is voltage related you'll probably see some continuing intermittent 771 issues. A quick explanation might help that make sense. This is not complete or 100% accurate but it will help make sense of the voltage issue.

    With that type of lnb and switch the channels you can get are broken in to 4 blocks. When the receiver is directly connected to the dish it controls which of the 4 blocks an input gets by changing the voltage between 13 and 19 volts and turning a tone on and off. The way the switch works is by having one input for each of the 4 blocks and then just passing which ever block a receiver selects to the correct output. A voltage issue occurs when the receiver is trying to send a 19 volt signal but because of a long run, an unpowered multiswitch or other issues the voltage ends up too low so the dish is sending the wrong block of channels. If 2 receivers are trying to get the same block they'll both combine together and can get the voltage close enough to 19 volts to get the correct block even if one of them alone is not enough. Because of the way the channels are arranged an HD receiver is much more likely to be on the 19 volt with tone set of channels than a SD receiver is and most likely this is where you weren't getting enough voltage. By moving all the hd receivers to one switch you have increased the likelihood of having 2 or more tuners on the same switch on that block of channels so they'd be sharing the load and getting the correct voltage. When they are split across 2 switches you are loosing more power to powering those parts of the 2 switches so they weren't working. Assuming this is the case, you'd still see random 771's when ever a single tuner happen to be on 19v tone by itself but since about 1/3 of the hd channels come from here that may not be very common depending on your viewing habits and probably where your HD locals come from.

    The reason some people asked about which channels specifically is because we can look up where the channel is coming from and confirm that it one that would be on the 19v tone side instead of someplace else.
     
  12. carl6

    carl6 Moderator Staff Member DBSTalk Club

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  13. datacomm

    datacomm New Member

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    we found the hard way that if you are going to SPLIT the 4 lines down into 2 wb6x8 we needed to install a polarity locker like a 4SATPL from sonora

    this will power the dish head and lock it. also we use 5-2300 1 port power passing splitters and had the power passing leg connected to the same wb6x8

    hope this helps

    dont forget the " B Bands " where needed
     
  14. Shades228

    Shades228 DaBears

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    He has power issues and when it rains he'll have signal strength issues. Your situation may have used that to fix an issue but it's deffinately not needed.

    However there's a very good reason that installations setup this way have been discontinued and are now required to be replaced when run across.
     
  15. carl6

    carl6 Moderator Staff Member DBSTalk Club

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    ???
    Actually, the Sonora is an excellent solution to this type of situation. The WB68's are not powered, and when combined with splitters and long coax runs, it is not uncommon to have voltage drop issues, which the Sonora will totally resolve. All four signalling combinations will always be present at the input ports to the WB68's, regardless of what mix of requests is coming from the attached receivers. I do agree parallel WB68's without a Sonora can present problems and should as a general rule be avoided. And stacked WB68's are just asking for problems.

    I don't understand why he should have signal strength issues when it rains, or how that relates to the problem he is experiencing.
     
  16. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Sonora also make amps to overcome too much loss before the WB68s.
     
  17. Shades228

    Shades228 DaBears

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    I wasn't relating to the problem he's having now just stating that rain fade on these setups is worse than a powered switch setup.

    With that said read my response below about being wrong on the sonora part.

    I looked up the wrong part on a search and got something completely different. So I stand corrected now that I looked up the correct part.
     
  18. syclonedave

    syclonedave Mentor

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    No one mentioned BBC's
     
  19. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    How many times do you want the OP to say:
     
  20. syclonedave

    syclonedave Mentor

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    If you don't want to go SWM.

    8X16's are real cheap these days. I've got quite a few collecting dust.
     

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