Replace your nonworking garage door opener logic board with our Guardian GUDT-312 garage door opener circuit board from North Shore Commercial Door. The Guardian GUDT-312 logic board is designed to replace the logic (circuit) board on your Guardian DC model 600SL, 615 or 628 garage door opener. The logic board inside your garage door opener contains the radio frequency (RF) receiver for the remotes and other components.
If the controls don't work, or the garage door isn't opening or closing properly, the problem might be your logic board. One buyer replaced his logic board with the Guardian GUDT-312 when his garage door would not close. Another customer replaced his when a power surge during a storm burned out his transformer and board. We have dozens of replacement parts at discount prices for your Guardian 600SL, 615 and 628 garage door openers.
For Guardian DC models 600SL, 615 or 628
Authentic Guardian logic board
See the video on this page for how-to setup
Shop all our discount replacement parts for Guardian garage door openers
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QUESTION: Does this circuit board work on guardian model 628? by None N 10/29/2015
ANSWER: My owner's manual for the garage door opener says Model 628, so I guess the answer is yes. However, I still have an occasional issue with the door not working. I have not been very happy with the Guardian opener, but I'm into it for so much money now, I'm stuck. My advice would be, if you haven't lost a ton of money yet, get a Liftmaster and start over. by Carrie J a