What Language? Gibberish!
If the receiver's only fault is the things it displays on the FL,
than the problem is the connection of the FL display to it's driver.
Perform the built-in FL check(see attached file from the SM).
You could do the following as well:
Open the receiver carefully tap/move/press the display and the connection.
Inspect the connections visually or better yet check connections with ohmmeter for breaks/shorts.
I finally got the original Remote to this model, but how do i enter the Remote code? The remote doesn't have any markings that say 7A-56 or DSP/16