A malfunctioning garage door opening system can put your household at risk. Not only is a faulty system an inconvenience, a malfunctioning safety reverse system can be extremely dangerous, especially when small children are involved. If your remotes or keypads have become unresponsive or if you sensors have become inconsistent, you may not need to replace the whole system to restore functionality. These issues are commonly caused by a faulty circuit board. Fortunately, replacing your circuit board is inexpensive, and in most cases, can be installed without the aid of a professional.
The Chamberlain 45ACT LiftMaster logic board is compatible with a number of LiftMaster models. Equipped with a Learn button, the 45ACT circuit board is not only simple to install, it is also simple to program the remote controls and adjust the travel and drive controls. For step-by-step instructions regarding installing, programming and adjusting your LiftMaster logic board, please reference your model’s owner manual, many of which can be found in our comprehensive catalog of Product Manuals. The garage door opener system models the 45ACT circuit board is compatible with include:
LiftMaster 8355 Belt Drive Opener
LiftMaster 8557 Belt Drive Opener
LiftMaster 8587 Chain Drive Opener
This part replaces Legacy Part numbers: 41D7675, 041D7675, 001D7675, 1D7675, 45ACCR, 45ACBR, 45ACCL, 45ACBL, 41D7656.
Additional models are also compatible with the 45ACT logic board. If you have a question concerning your system’s compatibility, please use our Ask a Question feature. At North Shore Commercial Door, we understand that the faster you replace your 8557, 8587 or LiftMaster 8355 logic board, the sooner your household is safe. For this reason, we typically ship your circuit board within one business day.
After installation, we recommend using a 990LM Garage Door Opener Surge Protector to safeguard your replacement LiftMaster logic board, as power surges and lighting strikes are common reasons for faulty boards.
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QUESTION: I have the lift master 8355 where door will not close when safety sensors are not functioning. However, the safety sensors will sometimes work and sometimes don't. I called repair service and he suggested that the board may need to be replaced. I checked sensors wire and they are in good standing. Is the 45ACT logic board work with my 8355 model? by Farshad F 2/26/2016
STAFF ANSWER: dditional models are also compatible with the 45ACT logic board. If you have a question concerning your system’s compatibility, please use our Ask a Question feature. At North Shore Commercial Door, we understand that the faster you replace your 8557, 8587 or LiftMaster 8355 logic board, the sooner your household is safe. For this reason, we typically ship your circuit board within one business day. by Taylor M a
QUESTION: i need to replace the 45ACT liftmaster logic board. the 6 wire plug is also burnt. does the board come with a new plug? by Jack R 11/1/2015
ANSWER: I new wiring harness is not included if that is what you are asking. All that you get is the logic board, just as pictured. by Timothy D a
REPLY: I just had the new unit installed 6 weeks ago. The logic board and harness plug has burnt. Is this covered under warranty. Since I need another logic board, do you also have another harness plug that plugs into the board. by Jack R r
STAFF ANSWER: No we do not. by Taylor M a
REPLY: Where would I get another plug for the circuit board? by Jack R r
QUESTION: I have a chamberlain LW5000EV. Is this the correct logic board to get? If not which one? by keith g 9/2/2015
ANSWER: 45DCT is the right one. by Rhodian B a
QUESTION: I have a liftmaster 8355. The issue I have with it is only my remote works. There is no light at my multi function controller. I jumped the opener at the unit itself bypassing any wiring issues and still wouldn't open. <br /><br />Would this be the logic board? It is a 45act. Brand new. House isn't even finished being built by Jesse W 8/3/2014