Can’t find your part?   Contact us:   +1-309-603-4777
Open Hamburger Menu
Sears Parts Direct
Please enter one or more characters
Scan Icon
Tips to find your model number
Cart
 Water filters
Water filter finder tool
DIY help
Featured products
Top brands
View all parts by brand
Top products and services
Products by brand
Orders
Your models

Keep track of the models you own in your profile

Sign in or Register to view or add models

Schedule a repair
Top parts for:
Kenmore
Model # 9116248813
Range Surface Element Receptacle

Term Blk Kit

Part #343824

$58.17 | 
9% OFF Phone Price : $64.17
Garage Door Opener

Model # 3850P Official Chamberlain garage door opener

Here are the diagrams and repair parts for Official Chamberlain 3850P garage door opener, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for3850P GARAGE DOOR OPENER

    Most common symptoms to help you fix your garage door openers

    Choose a symptom to see related garage door opener repairs.

    View all

    Why won't my garage door opener fully open or close the garage door?

    Main causes: garage door opener misaligned, travel limits need adjustment, bad travel limit switches, faulty logic contr…

    Read more

    Why won't my garage door opener open the garage door?

    Main causes: garage door locked, damaged garage door tracks, up-force setting needs adjustment, RPM sensor failure, bad …

    Read more

    Why does my garage door opener reverse on its own?

    Main causes: safety sensor beams blocked, safety sensors not aligned, downforce setting needs adjustment, damaged garage…

    Read more

    What preventive maintenance does my garage door opener need?

    Things to do: check garage door travel, tighten brackets and fasteners, test safety sensors, check travel limits and for…

    Read more

    Why does my garage door opener work intermittently?

    Main causes: radio interference, weak remote batteries, sunlight interference with safety sensor beams, safety sensors n…

    Read more

    Why doesn't my garage door opener work?

    Main causes: faulty logic control board, bad RPM sensor, broken gears in the drive system, bad drive motor…

    Read more

    Why does my garage door opener open and close by itself?

    Main causes: neighbor's remote programmed at the same time as yours, faulty wall control wiring, bad wall control unit…

    Read more

    Why is my garage door opener noisy?

    Main causes: loose fasteners, broken brackets, need preventive maintenance, worn drive gears, loose or worn belt, loose …

    Read more

    Most common repair guides to help fix your garage door openers

    These step-by-step repair guides will help you safely fix what’s broken on your garage door opener.

    View all
    How to replace a chain-drive garage door opener gear and sprocket assembly

    How to replace a chain-drive garage door opener gear and sprocket assembly

    Learn how to replace the gear and sprocket assembly on your garage door opener if the drive motor runs but the door won'…

    Read more
    Repair difficulty
    Time required
     60 minutes or less
    How to replace a garage door opener logic board

    How to replace a garage door opener logic board

    The logic board is the brains of the garage door opener. If the remote doesn't work or the door doesn't open and close p…

    Read more
    Repair difficulty
    Time required
     60 minutes or less
    How to replace a garage door opener drive chain and cable assembly

    How to replace a garage door opener drive chain and cable assembly

    If your garage door won’t move, the chain and cable assembly on your garage door opener could be broken. Follow these st…

    Read more
    Repair difficulty
    Time required
     60 minutes or less

    Effective articles & videos to help repair your garage door openers

    Use the advice and tips in these articles and videos to get the most out of your garage door opener.

    View all
    How to enjoy all the online benefits we offer on our Sears PartsDirect website

    How to enjoy all the online benefits we offer on our Sears PartsDirect website

    Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

    Read more
    Top questions about Sears and Sears PartsDirect

    Top questions about Sears and Sears PartsDirect

    Get answers to frequently asked questions about Sears and Sears PartsDirect.…

    Read more
    How to repair broken or damaged wires video

    How to repair broken or damaged wires video

    Learn how to repair broken, frayed or damaged wires in your appliances.…

    Read more
    No results are available.