Question on garage door motor

Bedlam · Aug 16, 2008

Probable no real place to place this question so, its here.
I had a lightning strike possible that took out my garage door opener board. The door can open and thats it. it doesn't want to reverse. Its the board as the stop switches are working.
My question is reference to the motor, I was considering using just the motor and a switch if possible.
Meaning there are three wires to the motor. Does anyone know if this motor is dc , is would be reversible ?without the control board?
I'm not interested in it stopping by itself or the safety reverse part. Just spinning the motor and reduction part to open and close.Id use a momentary switch
Thanks.

kenmac · Aug 16, 2008

Bedlam said:
Probable no real place to place this question so, its here.
I had a lightning strike possible that took out my garage door opener board. The door can open and thats it. it doesn't want to reverse. Its the board as the stop switches are working.
My question is reference to the motor, I was considering using just the motor and a switch if possible.
Meaning there are three wires to the motor. Does anyone know if this motor is dc , is would be reversible ?without the control board?
I'm not interested in it stopping by itself or the safety reverse part. Just spinning the motor and reduction part to open and close.Id use a momentary switch
Thanks.

Are you asking if the motor is dc current ?? I don't know about the different brands. But, my motor is ac current

linrick1 · Aug 16, 2008

Bedlam, your board may not be shot, check the photocells at the bottom corners of the door as they are prone to getting zapped by voltage surges. If one or both of the photocells are out the opener will still open the door but not allow it to close. It would help to know what type of opener you have, the vast majority are AC and are single speed. If the door begins its travel slowly, picks up speed during the middle of its travel, and then slows as it reaches the end of its travel, the motor is most likely DC. As for using the board to control the motor I think it would be more trouble than its worth because the board incorporates the safeties, the limits and in many cases the receiver...hope this helps, Rick

Bedlam · Aug 16, 2008

could there be a trouble with the sensors if they are working and the green lights are on?
ill have to check it some and see .
Thanks for the reply I agree maybe more trouble to try to convert a new one is only 120 dollars
its a liftmaster 1/2 hp one. similiar to the sears models.

Lasgambler · Aug 16, 2008

Lightning hit my house, took out the computers, pump saver on well and one of the garage door openers. Its a Geni, I took the cover off and the board was smoked. I bought a new board from a garage door guy for 40 bucks. Everything is good now with the exception of the top corner of the parapet on my Southwest style home is still blown off.

linrick1 · Aug 18, 2008

Bedlam, if the two green lights are on on your photocells are on you can check to see if they are working by obstructing the one sensor lens and see if one or the other lights go out. If that is the case then my guess is that the board is shot. Im not sure but you should be able to pick up a new board fairly cheap, just make sure that you get the replacement board that has the same color buttons as the board you have now as some are green, some red and some purple. The boards are easy to swap but if you need any help let me know, Rick

Bedlam · Aug 18, 2008

Thanks. Yes the lights are aligned and green and seem to not be the trouble.
I priced a board for one its approx 85 dollars.Plus shipping
I new system would be 119.oo
so there lies the decision LOL

tallyho8 · Aug 18, 2008

I have had good luck getting good used circuit boards on ebay. Here's one for $6 and they have others if that is not the correct one. LIFTMASTER GARAGE DOOR OPENER CIRCUIT BOARD - eBay (item 350089440215 end time Aug-19-08 07:34:54 PDT)

TheKid · Aug 20, 2008

You may be in luck. I just replaced my MIL's opener last night. It was a 1/2 HP unit and I'm pretty sure it was a Liftmaster. I'll take a look tonight and get the model number off of it. The board is good, it was the plastic gears that were worn out.

TheKid · Aug 21, 2008

I checked and the unit I have is a Chamberlain/Liftmaster. It's a model# 1255R and the part# on the circuit board is 41A5021-1D.

If this will work on your unit let me know and I'll pull the board and rear cover and send it to you.