I was told yrs ago cannot brand was an excellent product for photos so I bought Tr4520 from Amazon, for sm office, that I still have ,that never worked first there is no led lights to view for accuracy of digits. It wouldn't connect to Internet, then I came home and the printer does not even power up. I had some one to fix it and it didn't come on. So now 2 weeks ago I just bought Mg3620 from Walmart, it would not connect to my Mac book. So I paid a tech company to go into my computer and fix, and connect the computer to my Mac, as soon as I sent a excellent review about the computer to best buy, the printer stopped working correctly, now it won't copy,print from Internet or printer and my return date was March 16 2022. I have been trying to fix it myself. BUT now I'm gonna have ro pay a tech to fix it. I want the Cannon company to contact me about both these printers, Thank you and after reading everybody else issues with this brand. I need to rethink cannon products.
These are both USB-connect and WiFi-connect printers. WiFi is not "the Internet".
Did you follow the installation instructions EXACTLY? Typically with USB, software/drivers get installed before connecting the printer to computer. The WiFi part can be confusing if you are unclear about networking.
If the TR4520 will not power on, it does look like something is wrong with the hardware on it. You can try unplugging the printer from the power and then pressing the power button 10 times while the printer is unplugged. After that, you can plug the printer into a different power source and you can try turning it on. If the printer still does not power on, it will need service. In this situation, I would suggest contacting phone support at 1-800-652-2666. Our agents would be happy to see what service options you might have for the printer and can also assist with checking the network connection for the MG3620.