Lift Master garage door opener - easiest way to bypass eye sensor?

Discussion in 'The Garage' started by eakins, Sep 24, 2017.

  1. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Have an older Lift Master.
    Get a light clicking off and on and no work.
    Problem with 2 eyes connecting?
    Can I wire together right at the lift or best to tape the 2 eyes together? Don't need a nanny protection.
    I do not need this safety device. There are 2 connections at the lift these eyes connect to, can I just hard wire them together? Can I wire direct and if so how?

    Give me the Fast & easy pro fix?
    #1
  2. toxies1

    toxies1 Adventurer

    Joined:
    Feb 10, 2016
    Oddometer:
    58
    Location:
    new Zealand
    Photo eyes have a transmitter and receiver you only need to force the input from the recever normally the black wire, if you bridge the input common to the black is should work, don't take this as gospel but in merica would be between the brown and black ( pnp ) and the rest of the world blue and black ( npn). but bypassing a safety device is your on own your own head

    Sent from my HTC_0P6B using Tapatalk
    #2
    eakins likes this.
  3. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Please explain that in simple terms.

    Each each eye has a 2 wire coming from it.
    Each eye wire splits and white wire goes to 2 and each black to 3. Wall unit connects to 1 and 2.

    I'll take a pic tommorow.
    #3
  4. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    My lift looks just like this.
    Wall unit connects to 1 & 2.
    Eyes to 2 & 3.

    Help me eliminate eye units.

    0d6d2e9d2b6693d141cb3cf627ebebb96eb96cc5.JPG
    #4
  5. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Some say to tape the 2 eye connectors together and mount above the opener as the fastest way to eliminate.

    Can I just wire connectors at the opener and be done with it???
    #5
    longwaypyder likes this.
  6. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    So connect 2 to 3?
    There is not much else to do here?
    #6
  7. toxies1

    toxies1 Adventurer

    Joined:
    Feb 10, 2016
    Oddometer:
    58
    Location:
    new Zealand
    Your picture no work, not sure of the type of sensors you have there, I'll see if i can find the schematic diagram for your door

    Sent from my HTC_0P6B using Tapatalk
    #7
    eakins likes this.
  8. dddd

    dddd Long timer

    Joined:
    Jan 15, 2012
    Oddometer:
    1,285
    Location:
    Montreal, Canada
    It's not a DC signal. it's modulated, to prevent bypass (at least on chamberlain's)
    Of course you can tape both lenses together, but why?
    Check wires (all leds should light up), align the optic and be glad you have such protection.
    Worst case, buy new sensors (they are commonly sold separately).

    another reason for flashing light, is the motor position sensor and it's printed circuit board.
    the motor has much torque and if it is old, the rubber mount may be cracked. if so the motor rotate slightly in the case and tears the cabling and connectors. that happened to me. had to replace whole unit.

    if there are any malfuntion, these openers are rather smart and let you know by blinking.
    but chances are the optic sensor are involved as you figured.
    They are probably not even defective but the cabling to them might be. That's all.
    #8
    eakins likes this.
  9. OliverWinn

    OliverWinn Adventurer

    Joined:
    Jun 1, 2016
    Oddometer:
    50
    Location:
    Pony, Montana
    If you wire the eyes directly into the head just like they are and mount them pointing towards each other up at the head they will be out of the way. Keep in mind that this won't pass an inspection. If you have kids or dogs, I'd recommend leaving them where they are.

    Sent from my SM-G920V using Tapatalk
    #9
    longwaypyder and eakins like this.
  10. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    I'm going to tape the sensors together to eliminate the fault possibility. No idea how old this lift is. Could be shot. There are 3 screws to attach wire here.
    #1 red
    #2 white
    #3 black
    #10
  11. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Wall mount wire is connected to #1 & 2.
    Each sensor wire is connected to #2 & 3.
    #11
  12. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Door will move if I push and hold wall control button. If I push and release light just flashes on and off. Same with remote.
    No kids nor dog I'm worried about nor is anyone inspecting this. Just testing to see if I can get it to work at this point.
    #12
  13. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    0d6d2e9d2b6693d141cb3cf627ebebb96eb96cc5.JPG
    #13
  14. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Does the number of times the light blinks describe the fault?
    #14
  15. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    You guys seeing this pic above?
    #15
  16. OliverWinn

    OliverWinn Adventurer

    Joined:
    Jun 1, 2016
    Oddometer:
    50
    Location:
    Pony, Montana
    First and foremost, make sure that the lights are both on. The orange one is always on and the green one is on when they're aligned correctly

    Sent from my SM-G920V using Tapatalk
    #16
    eakins likes this.
  17. VX Rider

    VX Rider Long timer

    Joined:
    Dec 11, 2015
    Oddometer:
    5,361
    Location:
    Phoenix
    From a support web site....

    Number of flashes does have a meaning.

    10=problem with door safety circuit

    Look at each sensor if LEDs are blinking, sensors are not aligned

    If LEDs are not on sensor is faulty and should be replaced

    If both LEDs on each unit are out...the logic board is bad, or the wiring is bad, check them for continuity

    If wires are good check voltage across 2 and 3, should be 4-5 volts, if not 4-5 volts the Board is bad

    If the voltage is correct, and the wires are good, and all connections are tight...replace sensors.

    I
    #17
    eakins and OliverWinn like this.
  18. roger123

    roger123 Long timer Supporter

    Joined:
    Jun 23, 2007
    Oddometer:
    2,336
    Location:
    VA Beach, VA
    I just put my sensors above the garage door about 6" from each other, works like a champ.
    #18
  19. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    Success!

    Taped em together at the top with a green light. Wiring down to the lower door was a complete mess anyway. Slickest trick in the book.

    Someone turned the travel stops way too much. PO of this house was a ham fisted mechanic for sure. Played around till I have it just right.

    Right now I have the force up and down set to max, 9. How am I fine tuning both of those next?

    I also now need to do some maintenance on my door, hinges & rollers. Suggestions? It works but is loose and noisy. I can tell the lift spring is newer so it has seen some updates.

    So this is a LM1652 Lift Master built 07/00 in Mexico. Motor sounds good, no play at the sprocket up top. Big long chain drive. Slack adjust there?

    I'll use it till it dies for now.
    Can I add one of those outside key pads to this model? Or get new remotes?

    Thanks Gents!!!
    #19
  20. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    32,357
    Location:
    Fort Collins, Colorado
    I went simple. They are tapped together touching each other. then the whole single unit is double sided taped right on top of the lift, front edge, just above where the wires connect. I have the lights facing out so I can look and see if there is a sensor problem later.
    #20