Find an XFINITY Store or service center near you.When the main plastic gear stripped, I had to replace my garage door opener. I thought that it might be fun to "salvage" the electric eye sensors forI was also interested to see how they worked, since there are only two wire connections on the opener and yet the devices use them for both power and signals. The opener was a Chamberlin 1/2 HP dating from 1994. Yours may or may not The electric eye has two small boxes -- one which sends (infrared) light, and the other which receives it. The opener is able to tell when the light beam is blocked. Each of the two boxes has a pair of wires, one white and one white with a black stripe. Those wires go in parallel to two connectors on the opener. With the devices hooked up, an oscilloscope was used to see what was goingWith the light blocked between the transmitter and receiver, the white/black wire is 6VDC above the white wire. When not blocked, a periodic

signal is observed, where the white/black wire is 6V above the white wire for about 5.5 ms, then falls close to 0V for about 0.5 ms. This suggests that the opener is supplying 6V through a resistor -- the receiver is "pulling" the voltage to (near) 0V briefly and periodically. One cannot expect it to pull too hard, so a resistor must be present. The devices were removed from the opener. With a DC voltmeter across the terminals on the opener, the voltage was measured while resistors with gradually decreasing values were put across theSince the small boxes both have lit LED's when operating, the internal equivalent resistance can't much more than about 1k for a 6V source, so that was the starting value for the external resistors. in voltage (though less than by 1/2) was noted for a couple hundred ohmsThat means that the Thevenin equivalent resistance is less than about a couple hundred ohms. A 6V power supply was wired through a 150 ohm resistor to the two boxes.

Plus to the white/black wire, 0V (gnd) to the white wire. was observed to be virtually identical to what was observed from the opener, except the maximum was closer to 5V rather than 6V. that a smaller resistor is expected or that the circuit is not linear (hence, Thevenin's theorem is not applicable). But it works, anyway. To make a completed electric eye for use without the opener, a small circuit board was used which included a 6V regulator (7806) and a 555 (low-power) wired as aThe circuitry for the latter can be found on the 555 data sheet, and is easily found with an internet search. It has been copied and recopied by many. Referring to that diagram, I used a 2N3906 PNP transistor, and a 0.1 uF capacitor and a 75k resistorThe power was supplied through a surplus wall cube (labeled 9VDC, 200 mA). The regulated 6V powers the 555 directly, and the white/black wire to the remote boxes through a series resistor (I ended up using 150 ohms for

that though a somewhat smaller value may work better). I put in two LEDs. One just shows that the power is on, the other comes on when the beamMore LEDs is better, right? Pin 3 of the 555 goes low when the light beam is broken, and is highSo far it is just wired to light an LED. I am not sure what I might use the electric eye for as of yet. Perhaps something to do with trick or in the process of testing, I tried various power supply voltages. used internal doors in essex frequency of the pulses does depend on the voltage. outdoor area rugs 8x10A 5V source stillcar door lock actuator circuit seems to work, though the frequency is not as steady.car glass repair charleston sc

Manuals Brands CRAFTSMAN Manuals Garage Door Opener 139.3043 Manuals and User Guides for CRAFTSMAN 139.3043. We have 2 CRAFTSMAN 139.3043 manuals available for free PDF download: Owner's Manual, Owner's Manua I installed a new Craftsman garage door opener by following the instruction booklet it came with, but after the installation was done and I plunged it in the outlet nothing will power up. Nothing lit up, or any movement. bifold closet door track partsI made sure the outlet was working by plugging another device, and the other device worked but not the garage door opener. outdoor patio furniture swivel rocker electrical garage garage-door-opener garage-doorfront door entry feng shui

There are two options here: You've installed it wrong, or missed something: maybe it's as simple as a switch on the unit that needs to be turned, or the remote batteries aren't in right It's DOA, and no amount of re-configuring will work You're going to have to go through the whole set-up top to bottom. Check all your connections, make sure that batteries are in right, that any fuses are installed and work. Browse other questions tagged electrical garage garage-door-opener garage-door or ask your own question. 1-1/4 HPS* Wi-Fi Garage Door Opener with Battery Backup and Ultra-Quiet OperationSuperior Door Service represents the widest selection of brands in the Kansas City metro area. We have options for any home decor that you desire, or we can custom build a door to your own design from Clopay, CHI, Delden, Eden Coast, or Amarr. Residential Garage Doors & Section Replacement Wood – Standard flush surface, panel designs or custom made with a variety of woods available.

Steel – The convenience of a pre-painted, maintenance-free surface. Composite – The elegance of wood without the maintenance, and the strength of steel without the potential for rusting or denting. Download Door Visions Pro Download Door Visions Pro and find out what a new garage door looks like on your house today! Click links below to find a residential garage door: Garage Door Openers & Operators Chains, Screws, Belts & Rails Superior Door is a factory authorized dealer/distributor for the Genie Company, LiftMaster, and Craftsman. We have the Residential Garage Door Operators (openers) to fit your need and budget: Chain drive models – The standard of the industry Belt drive models – Built for quiet smooth operation Screw Drive Models – Direct drive motors that offer power, speed and convenience. Jack Shaft models –  Wall mounted model that requires no rail. Click links below to find Garage Door Opener & Operator Brands: