[Kaz]

Tested and working in Canada, UK, US from what I know. But probably work worldwide.

1. Get a Pax 3 S/N via ebay, facebook marketplace or even youtube. I got mine via FB.

2. Go to https://www.pax.com/pages/support-form and fill the form using the S/N you found.
State that it was a gift, when they ask you where you bought it, say retail store, and for when put a random date from 2 - 3 month ago. For the color, pretty straightfoward.

State that your Pax 3 won't turn on and you tried different charging cable, dock, outlet etc etc.. and still nothing.

3. They will e-mail you to try 2 - 3 different thing to try to fix it, obviously you tried them after receiving the email and your Pax 3 is still not working.

4. They will email you again asking you to create an account using the same email and to verify your age and then automatically a new one will be shipped to you.

5. Congrat you got a free Pax 3 worth 200$

If you have any question lmk.

Note: I've read that some people don't receive every accesories with the replacement like charger etc.. So you can find them on ali express for really cheap.

Is there a way to check if the S/N is valid?

I Guess trying... Nothing else i know