Both garage door openers not responding to remotes

Hi! I'm hoping someone here might have some insight into this issue I'm having with my garage door openers. 

I have two garage door openers in my garage and they both have stopped responding to wireless remotes and my outdoor wireless keypad. They both stopped responding at the same time. I've tried a bunch of things, searched for what the cause might be, and have come up empty. 

Here's some info:   

• Both openers are Chamberlain 3/4 HP units (don't know the model number), 5 years old. 
  
• They both work with the wired keypad on the garage wall. 
  
• If I hold the remote within an inch of either opener, it will respond. Anything further than that, and they don't respond. 
  
• I've replaced the batteries in the remotes and outdoor wireless keypad; no change.
  
• I've reprogrammed the remotes; no change. 
  
• I've unplugged and power-cycled both openers; no change. 
  
• I don't have any LED lights within 100 yards of these openers. (I've been told LEDs can interfere with the signal)
  
• The light bulbs on both units are in working order and not burned out. (I've read that burned out lights might cause an issue??)
  
• I've inspected both circuit boards and don't see any visible signed of burning or other damage. 
  

My current theories: 

• Power surge zapped them both. Strange thing is that we haven't had any inclement weather recently, nor do we have any other devices throughout our house that have been affected.
  
• Something is interfering with the signal. I'm at a complete loss as to how to determine what that might be though. I haven't added any new "devices" or things recently that would have changed the frequencies or signals in the house. 
  

I'm stuck! Anyone have any ideas or suggestions on how to diagnose this issue, or know what might be happening here? 

Thanks in advance for any guidance or ideas on things to try!

You Should First Check the Batteries,  And the Battery Contacts, If it Doesn't help Try To Clean the Remote Eyes - The plastic covering over the IR unit And The receiving unit, If It doesn't help So You Should Reset the System..

You can find this kind of troubleshooting information is your owners manual. If you do not have yours, a handy thing about the Manage My Life website, is you can go onto the top of the Manage My Life website and click on the tab button then insert your model number into the search box. I have attached a link below so you can view. I hope the link that I have provided you is useful.

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Hello! I'm happy to try to help you with the issue you're experiencing with your garage door openers. Based on the details you've provided, it sounds like you're dealing with a frustrating problem.

To summarize the key information:

You have two Chamberlain 3/4 HP garage door openers, around 5 years old
They both stopped responding to the wireless remote controls and outdoor wireless keypad
The remotes only work when very close (within 1 inch) to the openers
You've tried replacing batteries, re-programming the remotes, and power cycling the openers, but nothing has resolved the issue
There are no LED lights within 100 yards that could be interfering with the signal
The light bulbs in the openers are functioning properly
Given these details, a few possibilities come to mind:

Potential electrical/electronic issue: It's possible an electrical surge or some other electronic interference has damaged the internal components of both openers. This could explain the simultaneous failure, even though you haven't had any major weather events.
Wireless signal interference: Something in the environment may be interfering with the wireless signal between the remotes/keypad and the openers. This could be a new electronic device, changes in the wireless landscape in your area, or some other factor.
Mechanical failure: There's a chance the openers themselves have just reached the end of their lifespan, and some internal mechanical component has failed, preventing them from responding properly.
My recommendation would be to:

Thoroughly inspect the openers for any signs of physical damage or component failure. You may want to consult a garage door repair specialist to diagnose the issue.
Try testing the openers in a different environment, if possible, to see if the issue persists or is specific to your home's setup.
Consider replacing the openers if the diagnostics point to an irreparable problem. Newer models may have improved wireless capabilities that could help avoid similar issues in the future.

If possible, we are happy to provide online guidance and help, you can contact us: CHI Hardware Co., Ltd.

Or you can directly send us an email about your problem, and we will reply to you as soon as possible after seeing it.
Email: chi@chihw.com