How to Replace Logic Board

    You should be able to replace the logic board of your electronic garage door opener without scheduling a service call with a technician. The    boards are a part of the system’s microprocessor, something like a computer chip. If you can locate it and remove it, you can replace it.

 Logic boards typically fail due to a power surge. A power surge may occur if there is an interruption in your electrical service. In some cases, a  lightning strike is involved. Surge protectors are available to prevent this kind of thing from happening in the future. 
 
  In order to replace your logic board, you will need to know the year the opener was manufactured. Any opener manufactured after 1993 will  include one of the boards. It is still possible to find replacement boards for openers from that date.

 Openers manufactured after 1997 could be the “security +” type. The security + systems include rolling codes to provide greater security. But, not  all doors manufactured after 1997 include the rolling codes. So, you need to know whether you have the rolling codes or the million code design.
 You will also need to know if your system includes a belt drive, a standard chain drive or a deluxe chain drive. Some openers manufactured after  2005 include a DC jackshaft. They use a different circuit board. If you have a two piece circuit board, your system was manufactured after  2001. Knowing the exact year will help you find the right replacement board for your system.

  How do you know when it is time to replace your logic board? Receivers and logic boards manufactured with a yellow or blue force adjustment    dial include self-diagnostic capabilities. You will see an LED light next to your system’s “learn” button. The light will go through a cycle of  flashes. It will flash for a specific number of times and then remain dark for a while. Then it will start flashing again. You can count the number of  flashes to determine what the problem might be. The number of flashes that suggest the problem might be in the circuit board varies depending on  the manufacturer. For example, in the Lift-master systems, the LED light will flash six times to indicate there is a motor circuit failure and the logic  board needs to be replaced.

  In systems that do not include self-diagnostics, you have to use a process of elimination to determine the actual problem. If the remote controls are  involved, correcting the problem could be as simple as replacing the batteries. Always start with the simplest solution. If you cannot identify the  problem, you can always contact a technician for help.
 One way to tell if your logic board is working is to unplug the unit. Wait for a few seconds and then plug it back in. If you hear a “click” from the  logic board, the board is still working. If no click is heard, then it is time to replace it.
 A complete list of replacement boards, along with the parts number is located here at www.garagedoorstoronto.ca. 

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