"TV520" often appears in documentation for replacement remotes. If you are looking for a replacement, universal remotes like the Anderic RRHG003 or various models at

If "TV520" refers to a screen size (50-inch) and series (5200), the "/R1" suffix is common in Philips manufacturing codes for the UK and European markets. This would be a modern Smart LED TV.

He hadn't turned it on. But as the lightning flashed, the screen ignited.

The "story" of Philips TVs in general is one of transformation: