The Hormann Receiver Logic Board for the SD5500 Garage Door Opener, D437633 can only be returned within 30 days of the sale date. This circuit board is only compatible with Hormann SD5500 garage door opener model.
Ships the next Business Day.
TO REPLACE THE CIRCUIT BOARD:
Always make sure the opener is unplugged from the outlet.
Remove the light bulbs.
Remove the plastic cover covering the head assembly.
The board is at the back of the head and is secured in place by 4 plastic tabs. With slight pressure push on the two tabs that are at the edge of the board closest to the actual motor itself.