Hi everyone, I've got a problematic door opener and I'm hoping some genius (or at least someone smarter than I, which is probably everyone here) can lend some help. I have a single garage door with a Sears/Craftsman 1/2 hp chain opener. I do not know the age of the opener but I'm guessing it is about 30 years old. There is no model name on the case other than the brand, but the model number is 139.53413, 120v 6.0 amp. The problem is that the door only works intermittently, that is, when I press the wired opener button it will only occasionally respond. It might work for a handful of times, and then a few hours later I'll try again and it won't respond. I have taken apart the wired button and cleaned the terminals, didn't help. The remote control produces the same problems - it only responds sometimes. This has been going on for maybe a year, and if I unplug and replug the power, it will temporarily work. Another thing I've noticed is that the opener produces a clicking sound on its own. Meaning when I am not trying to open the door, I will hear the opener body clicking almost like its turning on and off or resetting somehow. It sounds more electrical than mechanical, like maybe the power board is engaging and disengaging.
After doing some troubleshooting research I recently removed and replaced the capacitor with a new one, and the old capacitor has a date on it of "April 1988"... pretty old (it's an old house and I've only lived here for 2 years). The P/N number on the capacitor is 30B0363, 220vac, 53-64 mfd. (I don't know what those numbers mean but I figure the more info the better.) So after I installed the new capacitor, the opener worked perfectly for about an hour - button worked, remote worked, car remotes worked, etc. Then a little while later it wouldn't respond again! So, naturally, I did what any sane person would do: in frustration I smacked the motor body of the opener and then it started working... it would open when I pressed the button. That was last week, and now everytime I try to open the garage door, it won't respond unless I give the opener body a light tap with my hand
Very confusing, but interesting that it responds immediately with a light tap!!
So I have no idea. My thought would be a loose connection somewhere? I didn't look too closely at the circuit board, but at a glance it didn't appear to have any glaring problems. The weird thing is the opener will respond the same whether I press the wired button or the remote control - if I tap the body of the opener, the garage door will respond to both the button and the remote. Then after a while it won't respond (unless I tap it again).
Any thoughts?? I tried to give as much info as possible (and sorry for the long post) and thanks in advance for any ideas you might have.
James
After doing some troubleshooting research I recently removed and replaced the capacitor with a new one, and the old capacitor has a date on it of "April 1988"... pretty old (it's an old house and I've only lived here for 2 years). The P/N number on the capacitor is 30B0363, 220vac, 53-64 mfd. (I don't know what those numbers mean but I figure the more info the better.) So after I installed the new capacitor, the opener worked perfectly for about an hour - button worked, remote worked, car remotes worked, etc. Then a little while later it wouldn't respond again! So, naturally, I did what any sane person would do: in frustration I smacked the motor body of the opener and then it started working... it would open when I pressed the button. That was last week, and now everytime I try to open the garage door, it won't respond unless I give the opener body a light tap with my hand
Very confusing, but interesting that it responds immediately with a light tap!!So I have no idea. My thought would be a loose connection somewhere? I didn't look too closely at the circuit board, but at a glance it didn't appear to have any glaring problems. The weird thing is the opener will respond the same whether I press the wired button or the remote control - if I tap the body of the opener, the garage door will respond to both the button and the remote. Then after a while it won't respond (unless I tap it again).
Any thoughts?? I tried to give as much info as possible (and sorry for the long post) and thanks in advance for any ideas you might have.
James
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