I am trying to view our tax return we filed a few months ago like I always have in the past & it either will not come up or comes up looking like hieroglyphics.

Please see these FAQs for troubleshooting printing issues:

https://ttlc.intuit.com/replies/7109628

https://ttlc.intuit.com/replies/3301671

Here is another printing option:

Please log back in your TurboTax account and "add a state" to open the return back up (you are not really adding a state, just to open it back up), then select Tools on the left, Print Center and choose the print center, then select returns and choose to print just the tax return or to include all worksheets as well.