I have an old powerlift wr827 garage door opener, but have lost the remote. Is there a universal opener with a 10-pin setting that I can purchase that will work with this?

eBay has plenty of garage remotes just search for your brand.

I think your garage opener has failed.

https://www.youtube.com/watch?v=MHBZPULewds
FINDING YOUR LEARN BUTTON

you might have to hold down the component button 3 - 5 seconds until lights blink. then pass code

The old eye beams and controller may or may not work. The remotes definitely will not. If they do, they will probably cause problems over the long run. Best thing to do is to go ahead and replace them. But if you like the old button, give it a try. Some more basic older ones will work, you just may lose some of the features like door lock or light control.

SORRY TO SAY.THE ANSWER IS YES.
THE NEW OPENERS ARE NOT ON THE SAME FREQUENCY.

YOU CAN PURCHASE REMOTES THAT WILL WORK WITH BOTH OLD AND NEW OPENERS (DUAL FREQUENCY).
BUT, OLD REMOTES WILL NOT WORK WITH THE NEW OPENERS.

It could be the receiver that has quit. I would opt for a new opener.

It seems you have done everything right. I would return the universal remotes to Lowes and purchase the correct remote for the opener. There have been several people with universal remotes and this same problem.

This remote is compatible with your power lift. It should of come with a manual on how to program it as well. Each opener has a different sequence to program it so I can't just give a general answer. On a chamberlain powerlift look for the color of the button while programming it. If you need a copy of this manual you can get one at chamberlain.com. Thanks BB

It sounds like your logic board has bit the dust. Due to the age of that opener I would suggest a new up to date model.