Please help - ERROR CODE 771A

Discussion in 'DIRECTV Installation/MDU Discussion' started by JDookie, Sep 2, 2010.

  1. spectrumsp

    spectrumsp Mentor

    Aug 30, 2006
    OK...will try. Took it back to original building with another antenna (with a SWM) and it worked fine...will report results...
  2. dieguy

    dieguy BIG Dish alum

    May 27, 2008
    I have the same problem, 771A, but at night when it is cooler. I reset the reciver and it's ok.
  3. Plasman

    Plasman AllStar

    Jan 1, 2006
    I replaced the PI, 8 way switch and LNB with green label parts I bought on ebay and the problem disappeared. It has been over a week with one day at 108 degrees last week, so I'm good. Not sure which part was the culprit, but I guess I don't need to know. I'm just out the $54 for parts but it beat dealing with a DTV service call which can be frustrating in San Diego.
  4. cranky frank

    cranky frank New Member

    Dec 13, 2011
    I have been fighting the 771A error for several weeks. The problem would come and go at random. After reading about needing to plug the PI directly into a wall outlet as I had done it dawned on me that the outlet was directly opposite to an exterior outlet that had a heated dog water bowl plugged in to it. Apparently the amperage or voltage was dropping enough when the heater in the dog bowl came on to effect the PI. Moved dog bowl to different circuit and problem solved. I can see how a PI plugged into a circuit that already has an appliance with a heavy load, such as electric blanket, space heater etc... could cause a 771A fault.
  5. jbonbright

    jbonbright New Member

    Mar 3, 2012
    "Redoing" my grounds resolved the issue for me. Unfortunately, I tried everything else FIRST.

    My setup is a SWM Integrated LNB (no separate SWM module) with two HD DVRs (IRD's - integrated receiver-decoder) and a non-DVR HD box. The system uses the 21-volt Power Inserter (PI) and two splitters, one for grounding to the incoming water supply pipe in the crawl space and a four-way splitter to send power from the PI to the dish and distribute signal to the IRD's.

    I had problems right from the get-go, related to not being able to receive guide info for xx hours. So, a different tech came out and replaced the LNB module and one of the HD DVRs and it was working when he left. Not more than a couple of days later, however, I started getting the same problem. A third guy came out and he fixed the issue by correcting the connections at the splitter that were incorrectly done by the installer and missed by the second guy. I had no problems for months.

    Then, about 18 months or so later, I started getting the 771a errors. It was completely sporadic and random; sometimes we'd go days without issues, other times it would crap out twice in one day. I didn't have a service plan and like to try to figure things out by myself, so I started researching it. Long story short, I did the following, all of which failed to resolve the issue permanently:
    - Moved the PI to another outlet on another circuit from its original one, which I thought might be experiencing voltage issues because of all the entertainment stuff (PS3, Wii, big TV, etc.) that was plugged into it;
    - Replaced the PI;
    - Replaced the splitter in the crawl space
    - Messed with different wiring combinations; for instance, some installations I've seen don't use (aka terminate) the IRD port on the PI; instead, they use another splitter
    - Connected the PI to a new Rhino voltage regulator I picked up at Walmart

    So, what wound up working for me? I removed the clamp for the two-way "grounding" splitter, shined up the copper on the service pipe, then reattached the clamp. I then removed the grounding wires from the clamp and ran sandpaper over the exposed ends until they were shiny, then reattached. Finally, I went out the dish outside and removed the ground wire of the coax cable, sandpapered the exposed end, then reattached.

    I've had zero problems for about a week now, which is the longest it's gone since the 771a problems started.
  6. ds2992

    ds2992 Mentor

    Feb 8, 2012
    one thing to mention. Always tighten the fittings with a wrench just passed snug. They can come loose over time if not wrench tight.
  7. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

    Dec 9, 2006
    I always use a wrench, but only to "snug", which I'm sure is what you're meaning. "The problem is" teaching someone the difference between "snug verses tight". These don't have to "hold on the front bumper" :lol:
  8. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

    Dec 9, 2006
    The SWiM PI on a power strip shouldn't be a problem if it's not turned off, mine have been that way since the first days of testing SWiM, back in '07, and as you might guess have had ZERO issues.
    Many people also use a UPS so they can keep recording, during short outages.

    As to "the trainers", While I don't want to piss on them because they only know the information they're given, but I've met at least one in person, along with the manager and the engineer for the service area, and it isn't a good sign when the customer knows more about what's going on than the "trainer" does. :nono:
    Thankfully, the engineer was able to "correct" the trainer, so the trainer understood what I was telling him, which he hadn't been told before.

    IMO the whole training program should be overhauled from top to bottom, where it starts with someone that knows what's going on, and then teaches this down the line, so the last man/women, knows "Why" to do things, instead of following a list of things to do that may or may not make any sense "in the real world".

    Here's an example of why it needs an overhaul:



    How many can see what's wrong here? Good intentions, but missed the whole reason "why".
  9. ndole

    ndole Problem Solver

    Aug 26, 2009
    You mean the mysterious missing ground? :lol:

    I don't think laying 'on the ground' counts :)
  10. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

    Dec 9, 2006
    But he so nicely connected it to the mast, and then used a ground block and connected it there. The cement balcony is only three stories above the dirt, so why isn't it grounded? !rolling

    [to be fair] there is no grounding point anywhere out there. I kludged one inside to a ground so it's at least connected "somewhere" to ground.
  11. ndole

    ndole Problem Solver

    Aug 26, 2009
    They way that the QC evals work (at least with us) there is a list of pass/fail entries. Each item (Grounding, bonding, etc) has their own pass/fail value. So, even if no ground is available, it's worse for you to not 'bond the ODU' also :lol:
    The product of bureaucracy :p

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