This isn't a problem with the remote as such, I would regard it as more of a problem with your TV. The makers of your TV obviously programmed in the delete codes without first checking if those codes are used by any other TV for more normal purposes. The worst offender in this regard is Advent, where there are plenty of examples of people killing their TV by using a regular "Philips" TV code in various universal remotes. When people in this situation have turned to Advent for help, they have not responded, therefore I would recommend that people avoid Advent TVs.

Your post would be more useful if you listed the brand and model number of your TV, along with the code that you used in the Philips PM335.