We need a gear part number 41A4252-7C and 41A4252-7C on a Chamberlain FCC I D:HBW1127

This is the one you will need. Best place to buy is from Amazon if you are going to do it yourself.

http://www.amazon.com/Chamberlain-LiftMaster-Craftsman-41C4220A-Sprocket/dp/B006L8CZKI/ref=sr_1_1?ie=UTF8&qid=1424440429&sr=8-1&keywords=craftsman+gear+kit

If it won't reprogram it's your receiver in the the circuit board. The wall switch will still work because it's wired to the opener.

Make sure the light in the wall control is not blinking. If it is press and hold the lock button for 3 seconds.

The information you have is bad. But without a manufacturer who can know?

You need to post the model number of the opener. It is on the end nearest the door.

Part number 41A2817.

You can buy bulbs designed for garage door openers. They are heavier duty. Also you should unplug the unit and remove the light bulb. Pull out on the center contact of the socket. Replace the bulb and plug the unit in.

You can replace that. The part number is 41A2817. It comes with a set of instructions.

It is really important to that you have the correct remotes for your opener. The model number is on the end closest to the door and starts with 139.