While replacing helical and worm gears,I shorted out the board and parent company doesn't have it any longer.It's a #556 Overhead Door brand.
overhead door brand 556 garage door opener,1/2 amp board
Feb 18, 2014
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Information here may be outdated?
Someone at sci.electronics.repair might have it.
If the motor head contains the board you can get the whole works at
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on ebay for $49.95 with free shipping.
And from now on you will unplug things before you take them apart.
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