How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Craig Your Own Question
Craig, Electrical/ Electronic Technician
Category: Consumer Electronics
Satisfied Customers: 4529
Experience:  33 years troubleshooting electronic and electrical control systems for all types of equipment.
Type Your Consumer Electronics Question Here...
Craig is online now
A new question is answered every 9 seconds

Craftsman Garage Door Opener Model 139.53970SRT. The Indicator

This answer was rated:

Craftsman Garage Door Opener Model 139.53970SRT. The Indicator Light to the right of the SRT Button is blinking. Is there a problem? The opener seems to be working OK, the remotes in the cars and the 3-function remotes seem to working.

Count the number of LED flashes. This is telling you a fault code of some kind. Not sure why if it is working but count the flashes, then let me know and I can find them in the manual. Do you have the manual? It's in the 'troubleshooting' section
Here is your manual:

Edited by protek480 on 11/22/2010 at 5:33 PM EST
Customer: replied 6 years ago.
I looked in the manual that I have and the one you sent online, didn't find anything. The light is flashing six times in a row, then a pause, then six more times.
Ok, standby let me look that one is probably sensing a couple of pulses from the 'RPM sensor after the motor is turned off.
'RPM pulses detected after the motor was turned off (perhaps forcing up travel)'
This is what is most likely happening form a little 'slop' in the chain or something but it's not holding it from working.
Customer: replied 6 years ago.
Should I tighten the chain a little?
Ya, if you can. It may help it sounds like this is all it is though. I wouldn't worry about it too much. It's functioning as it's supposed to but giving you the fault from an extra bit of travel most likely
Craig and 2 other Consumer Electronics Specialists are ready to help you

Related Consumer Electronics Questions