Maintenance free screw drive … Screw Drive * 1 HPc * motor; Opening speed: Up to 12.0 in/sec † Limited Lifetime Motor & Screw Drive Warranty ** 2 light bulbs – Genie LED light bulbs recommended (100 watt max if incandescent bulbs used.) Compatible with Genie Screw Drive Models: Pro99, CMD9900, H8000, ISD990, ISD995, ISD1000, 4560 Genuine Genie replacement part Comes with the harness to work with two style plugs Reviews Installation Instructions PDF Replacement Instructions for the 36428R.S Motor Drive Board Motor Drive Board … Excessive lifting weight can be a problem. 35035C Genie Garage Door Opener Excelerator … I have a screw driven genie isd 990 excelerator… You need to check the operation of the door without the opener connected. Some possible problems.... bad motor, loose or broken ribbon cable on motor drive board, fuse on motor drive board blown. ... Fuse (10A). PRO99-2IC, CMD9900-IC, ISD990-1, ISD990-2, ISD1000, Intellicode, Homelink Compatible, H8000D, PRO9900, 990 OverDrive ... Motor Drive Board. Garage Door Opener Parts for Genie Excelerator Screw Drive Door Opener.